7TH GRADERS FINAL REVIEW 1) In an agricultural area, a heavy rainfall caused a flash flood The topsoil from a freshly fertilized field washed into a local stream. As a result, the amount of nitrogen in the water drastically increased causing the algae to grow to record levels, and the algae covered the surface of the stream. What effect did this bloom of algae have on the stream? a. The animal life in the stream was benefited since most fish eat algae. b. The algae upset the balance of carbon dioxide and oxygen in the water causing fish to die. c. The algae acted as a thermal blanket on the stream causing the water temperature to increase and the fish to thrive. d. The algae attached itself to the stream bank and narrowed the width of the stream. This caused the water to flow at a faster rate.

2) If a large volcano that is on an island erupts, it will impact the local ecosystem. Which of the following is NOT a way volcano will affect the local ecosystem?

a. The lava from the volcano will heat up the air in the local area and kills all life in the area. b. Lava will run down from the volcano, burning down all the trees around the volcano. c. When the volcano erupts, it will throw dust into the air affecting plants across the planet. d. The lava will run into the ocean around the island, killing coral reef animals. 3) Karen has a birdbath made of poured concrete. When she bought it, the salesman suggested that she seal the surface with a watertight solution. Why was this suggestion made? a. In cold, wet weather, any water that seeped into the concrete would freeze and cause the birdbath to crack. b. The watertight solution would slow the evaporation of water during periods of warm weather. c. Over time, rainwater would react with the surface of the concrete and deposit a mineral layer over the carvedareas.

7TH GRADERS FINAL REVIEW d. When rainwater sits in a concrete basin, the pH becomes too acidic for the birds. The solution allows the pH to remain neutral.

6) ON

4) Which ecoregion of Texas is most likely to be most affected by wind erosion? a. East Texas Piney Woods b. Blackland Prairies c. Gulf Coast Prairies and Marshes d. Rolling Plains

5) Which of the following sets of equipment can be used to analyze the effects of human activity on a watershed? a. water testing kit, triple beam balance b. water testing kit, hand lens, notebook c. water testing kit, beaker, hotplate d. hot plate, beaker, graduated cylinder

Use the following diagram for the next two questions.

7) The State of Texas can be divided into geographically similar areas defined by climate and animal and plant species that stay relatively within the same area. These large geographical sections of land are called— a. b. c. d.

counties substates ecosystems ecoregions

8) Palo Duro Canyon, often called the Grand Canyon of Texas, is located in the Panhandle. The steep walls and deep caves of the canyon were most likely carved by— a. years of prevailing wind from the Rocky Mountains

7TH GRADERS FINAL REVIEW b. deforestation by early settlers c. water erosion from a fork of the Red River d. continuous, intense rainfall over long periods of time

is the greatest distance from the waste treatment plant ? a. b. c. d.

I II III IV

Use this diagram for the next two questions. 11) Using the model above, fill in the following analogy. advantage : ___ :: limitation : ___

The diagram illustrates the contamination of a river by a municipal waste treatment plant.

a. does not show topography; shows water flow b. shows water flow; does not show topography c. does not show power plant; does not show type of pollution d. does not show type of pollution; does not show power plant

9) What is the original point of contamination? a. I b. I I c. I I I d. I V 10) Which point on the map represents the affected area that

Refer to this model to answer the next two questions.

7TH GRADERS FINAL REVIEW the foundation for the future of space travel? a. b. c. d. 12) How can a model of the solar system be used in planning a trip from Earth to another planet? a. to estimate distance, travel time, and fuel cost b. to anticipate the frequency and occurrence of meteorites and other objects in space c. to map flight plans that avoid solar flare-ups and solar winds d. to predict possible emergencies astronauts may encounter during space travels

13) Which of the following is NOT a limitation of the model? a. size of the Sun b. size of the planets c. distances between planets d. number of planets 14) Who developed the laws of planetary motion which laid

Goddard Newton Kepler Galileo

15) Which statement best describes the effect of microgravity on an astronaut's bone health? a. the amount of physical stress on bones increases, resulting in bone deterioration b. the amount of physical stress on bones decreases, resulting in an increase of bone density c. the amount of physical stress on bones increases, resulting in an increase of bone density d. the amount of physical stress on bones decreases, resulting in bone deterioration

16) Why do astronauts wear spacesuits in swimming pools before participating in manned space explorations? a. it allows them to work in a frictionless environment

7TH GRADERS FINAL REVIEW b. gravity of water is similar to microgravity of space c. the load of the backpack is lightened by water, allowing astronauts to more easily practice space tasks d. wearing a spacesuit in water simulates the weightlessness of space 17) The insulated feature of space suit layers are designed to— a. protect from radiation. b. trap excessive CO2. c. regulate temperature. d. provide pure O2.

18) How does the space suit backpack help astronauts breathe in a space environment? a. maintains air pressure to keep bodily fluids from boiling b. provides pure O2 for inhaling and canisters to collect CO2 c. stabilizes an internal temperature of 22° C (72° F) d. collects urine and solid wastes

19) How does pressure in the astronaut's space suit help the body work? a. forces blood to certain parts of the body to counteract the absence of gravity b. acts as an external pacemaker to regulate the heart beat c. regulates gas exchange between the oxygen pack and the astronaut d. monitors the content of O2 to CO2 in the blood

20) All of the following are reasons why scientists use full scale mockups of space shuttles and the International Space Station before undertaking actual space mission EXCEPT— a. to master all aspects of inflight operating procedures by crew and ground support. b. to familiarize crew members with emergency escape procedures . c. to guarantee maximum safety and mission success, and to save the expense of an actual mission. d. to more easily discard out of date technology and equipment.

7TH GRADERS FINAL REVIEW 21) What work of Sir Isaac Newton helped others to understand and overcome the obstacles of modern space travel? a. laws of planetary motion b. discovery of gravity c. invention of electromagnetism d. construction of simple rockets 22) All of the following are ways that atmosphere makes the existence of life on earth possible EXCEPT— a. shields Earth from collisions. b. offers protection from radiation. c. maintains a constant temperature. d. allows for gas exchange between plants and animals.

23) The floating sensation astronauts experience while in a space environment is due to— F zero gravity. G microgravity. H gravity. J loss of gravity.

24) What is the relationship between ecological succession and equilibrium in an ecosystem? a. Ecological succession helps maintain equilibrium in an ecosystem. b. Ecological succession prevents ecosystems from ever reaching equilibrium. c. There is no relationship between ecological succession and equilibrium. d. Ecological succession and equilibrium are the same thing. 25) Deforestation, pollution, and over hunting can all result in— a. increase in biodiversity. b. reduction in biodiversity. c. no effect on biodiversity. d. a state of equilibrium.

26) 3 The role of a pioneer species in primary succession is to change a bare habitat into one that is suitable for other organisms. A species that is responsible for primary

7TH GRADERS FINAL REVIEW succession in an ecosystem is MOST likely able to — a. survive any predator. b. migrate during the winter. c. live at high altitudes. d. carry out photosynthesis. 27) Which of the following sequences MOST likely represents ecological succession on a recently abandoned wheat field? a. grasses → flowering plants →shrubs → native trees b. native trees → shrubs → flowering plants → grasses c. shrubs → grasses → native trees → flowering plants d. flowering plants → native trees → shrubs → grasses

28) What is the MOST serious threat to biodiversity? a. b. c. d.

climate change global warming pollution loss of natural habitat

29) Complete this statement. The more diverse an ecosystem is—

a. the more threatened its populations are. b. the safer it is from habitat destruction. c. the more stable it is. d. the fewer varieties of species are present.

30) The appearance of small plants with rapidly spreading roots on newly formed coastal sand dunes describes— a. b. c. d.

a microhabitat. primary succession. secondary succession. biodiversity.

31) Kylee wants to conduct an investigation to find out how sunlight affects the area of individual leaves on a tomato plant. Which instrument will be most necessary for her to carry out this investigation? a. b. c. d.

microscope hand lens ruler balance

32) Plants have a hard time living in a desert. Which of the following is the primary limiting factor?

7TH GRADERS FINAL REVIEW a. b. c. d.

elevation space food source moisture

33) The food that you eat travels from your mouth, down your esophagus, into your stomach, and through your small and large intestines before your body rids itself of solid waste. As the food passes through your body, it is digested, and you get important nutrients from the food. Which of the following is the correct term used to describe a group of body parts working together to perform a specific function? a. b. c. d.

an organism a tissue an organ system an organ

of organization from the simplest to the most complex? a. cells, tissues, organs, organ systems, organisms b. organisms, organ systems, organs, tissues, cells c. tissues, cells, organs, organisms, organ systems d. organs, organ systems, organisms, cells, tissues

35) All of the following are true EXCEPT: a. Skin is an organ. b. Organs are made up of tissues. c. Each organ is made up of its own kind of tissue. d. Tissues are made up of cells.

36) 4All of the following are types of tissues EXCEPT: 34) Living things are made up of cells. Cells are organized at different levels to form very complex living organisms like your body. Each level has a specific role or job to perform. Which of the following lists these levels in the correct order

a. b. c. d.

muscle skin digestive bone

37) What types of organisms have cells with very large vacuoles? a. animals b. bacteria

7TH GRADERS FINAL REVIEW c. fungi d. plants 38) Which phrase BEST describes the function of mitochondria? a. located in the cytoplasm bacteriasized organelle b. converts energy for cell use c. contains a folded inner membrane 39) The three major parts of the circulatory system are the heart, the blood vessels, and the blood. The heart is an organ made of specialized cells. Which of these functions can the heart perform that individual heart cells cannot? a. b. c. d.

pumping blood producing waste using energy growing larger

40) What function or process is common to all living things? a. b. c. d.

photosynthesis respiration movement oxygenation

41) All living things, plant or animal, have one thing in common. Which of the following is the common thing? a. They all have cells that are held up by cell walls. b. They all have the same way to get water and food into their cells. c. They all have cells. d. They all have special cells that can do many different things.

42) In all living things, the presence of what structure supports the cell theory? a. b. c. d.

cell wall cell membrane vacuole chloroplast

43) All of the following are characteristics of both living organisms and cells EXCEPT: a. remove waste from themselves b. rely on chemicals for communication c. grow and die

7TH GRADERS FINAL REVIEW d. extract energy from food 44) Catherine needs to measure 2.5 mL of water to make a model of a cell in science class. Which of the following pictures best represents this measurement?

USE THE FOLLOWING DIAGRAM FOR THE NEXT FOUR QUESTIONS.

a.

45) Which structures identify this type of cell? b. a. b. c. d.

II, V, VI I, IV, V I, III, IV I, IV, V, VI

c. 46)

What kind of cell is this? a. b. c. d.

d.

animal plant bacteria virus

47) Which cell structure functions like a school principal’s office? a. I b. I I c. I V d. V I

7TH GRADERS FINAL REVIEW 48) Identify the structure through which wastes exit the cell. a. b. c. d.

I II III IV

49) Two body systems work together to help remove waste products from blood. What are these two systems? a. b. c. d.

circulatory and excretory skeletal and digestive circulatory and digestive muscular and excretory

50) Which of the following is NOT a part of the integumentary system of the body? a. hair b. bones c. skin d. finger and toe nails 51) Which of the following is NOT a part of the respiratory system? a. b. c. d.

diaphram esophagus lungs trachea

52) How do gills of a fish help their survival? a. gills allow fish to break down water into oxygen and hydrogen b. gills allow fish to process energy c. quicker so they can move faster d. gills allow fish to breathe in air and water e. gills allow a fish to use the oxygen dissolved in the water 53) Which of the following adaptations helps birds fly? a. they have more fat than most animals so they can fly for long distances b. they have hollow bones so they are lighter c. they have smaller blood vessels so their hearts have to work less in flight d. they have a larger stomach so they can absorb food faster

54) USE THE FOLLOWING DIAGRAM FOR THE NEXT EIGHT QUESTIONS.

7TH GRADERS FINAL REVIEW 55) This diagram illustrates a vital process that occurs in the human body

57) What two body systems are interacting in this diagram? a. b. c. d.

respiratoryexcretory digestivecirculatory nervousendocrine respiratorycirculatory

58) Study the diagram carefully. What process is illustrated in the diagram? a. b. c. d. 56) How does the structure of the alveoli help process 1 illustrated in this diagram?

a. small patterns on the surface of the alveoli correspond with the shapes of CO2 and O2 molecules and allow them to enter b. smooth, rounded membranes of the alveoli allow gas molecules to flow in and out freely c. the hollow interior of the alveoli has ample space for unlimited gas molecules d. thin walls of the alveoli let molecules of CO2 and O2 pass through easily

photosynthesis gas exchange respiration gas deposition

. 59) The protein molecule that carries O2 and CO2 to and from body tissues is found in which structure? a. b. c. d.

1 2 3 4

a. b. c. d.

Identify structure 2. vein artery nerve capillary

a. b. c. d.

Identify structure 3. white blood cell platelet red blood cell nucleus

60)

61)

7TH GRADERS FINAL REVIEW 62) 13 What is the original source of O2 in the alveoli? a. lungs b. inhaled air c. nasal passages d. exhaled air

a. b. c. d.

ducts thermostat filter cooling agent

63) What is the major role of hemoglobin in red blood cells? a. carry food and oxygen to body cells b. prevent disease and fight infections c. carry digestive juices to the stomach d. send chemical messages to the nervous system 64) Ovaries produce and secrete hormones in addition to eggs. To what human body systems do ovaries belong? a. integumentary and reproductive b. excretory and muscular c. endocrine and reproductive d. nervous and digestive

65) What part of a heating and air conditioning system performs a function similar to nasal hairs?

66) Which statement best describes the function of this human body system? a. breaks down food into nutrients and wastes b. supplies O2 to the blood, which in turn, delivers O2 to all parts of the body c. provides support and movement for the body d. produces and secretes hormones which regulate metabolism, growth, and development

7TH GRADERS FINAL REVIEW 67) The largest human body organ which regulates temperature and serves as a barrier against harmful microorganisms belongs to the— a. b. c. d.

circulatory system nervous system digestive system integumentary system

68) The human body has specialized organs which collect and process substances from the blood. The concentrated substances are then secreted as hormones to regulate body processes. These specialized organs are called— a. b. c. d.

ducts glands organelles nodes

69) In a germinating seed, the downward growth of roots and upward growth of stems are the plant's responses to gravity. Which statement best describes this phenomenon? a. downward growth of rootspositive response to gravity; upward growth of stemnegative response to gravity b. downward growth of rootsnegative response to gravity; upward growth of stemnegative response to gravity c. downward growth of rootsnegative response to gravity; upward growth of stempositive response to gravity d. downward growth of rootspositive response to gravity; upward growth of stempositive response to gravity 70) Responses in plants that result in movement away from or toward a stimulus are called— a. b. c. d.

tropisms differentiation adaptations yield

7TH GRADERS FINAL REVIEW 71) Water can move through the cell membrane of one plant cell to another to maintain homeostasis. This process helps to balance the water that is needed for proper cell functioning. This movement of water into and out of cells is due to: a. b. c. d.

turgor pressure dialysis oxidation perspiration

72) Riding a bicycle requires additional energy from leg muscles. Which of the following conditions may result from this activity, and which response helps restore the body to its normal condition? a. increased carbon dioxide in the blood can be removed by breathing faster b. decreased oxygen can be replaced by digesting an apple c. increased sugars in the blood stream can be diluted by drinking water d. increased salt wastes can be removed by the heart

73) A person develops an elevated body temperature from a bacterial infection. This fever is a response from the body to help fight the infection by — a. slowing the growth of the bacterial infection b. increasing the energy level of the body c. increasing the body's heart rate d. stopping additional bacteria from entering the body

74) A basketball player helps maintain stable body temperature during the game by perspiring. The sweat helps cool his body by evaporating. What is this an example of? a. b. c. d.

mitosis homeostasis respiration digestion

USE THE FOLLOWING DIAGRAM FOR THE NEXT

7TH GRADERS FINAL REVIEW TWO QUESTI 77) What structure is the arrow pointing to in the diagram?

75) Sponges reproduce by a process known as budding. This process is the formation of a new individual that is a clone of the parent. This type of reproduction is — a. b. c. d.

sexual sporulation asexual binary fission

76) What would be a possible disadvantage of the type of reproduction shown in the diagram? a. ability to reproduce in the absence of a mate b. results in low genetic variation of the species c. allows for more genetic variation in the offspring d. takes less time to produce offspring

a. b. c. d.

chromosome nucleus cell gene

78) The ability to roll your tongue is an inherited trait. There are more people who can roll their tongues than people who can’t roll their tongues. Which of the following could be a correct assumption to explain this? a. The ability to tongue roll is a rare trait. b. The ability to tongue roll is a recessive trait. c. The ability to tongue roll is a dominant trait. d. The ability to tongue roll is a submissive trait.

7TH GRADERS FINAL REVIEW USE THE FOLLOWING INFORMATION FOR THE NEXT TWO QUESTIONS. In humans, eye color and hair color are controlled by several genes. Assume for the following questions that each is controlled by only one. For eye color, brown (B) is dominant over blue (b) and for hair color, black (H) is dominant over blonde (h). A male with blue eyes produces offspring with a female that has brown eyes.

81) An offspring inherited a dominant allele from one parent and a recessive allele from the other parent for the same trait. Which of the following is a possible explanation for what will be exhibited by the offspring for that trait? a. The offspring will exhibit the recessive trait with the dominant trait being masked. b. The offspring will exhibit the dominant trait with the recessive trait being masked. c. The offspring will not exhibit that trait because the dominant and recessive traits he received will each mask the other. d. The offspring will combine the recessive allele with the dominant allele and exhibit an entirely new trait.

79) Which of the following represents possible parental genotypes for eye color? a. b. c. d.

Father: bb, Mother: bb Father: bb, Mother: Bb Father: BB, Mother: Bb Father: Bb, Mother: BB

80) What is NOT a possible genotype for eye color for the offspring? a. Bb b. BB c. bb d. There is not enough information to determine a possible genotype for eye color for the offspring.

82)

Sexual reproduction — a. results in genetic variation in the offspring b. produces offspring that are identical to the parent c. decreases the chances of survival of the species d. results in genetic material being donated to offspring by one parent

7TH GRADERS FINAL REVIEW 83) How many genes does an offspring receive for each trait? a. 1 b. 2 c. 3 d. 4

84) Heredity is defined as the passage of genetic instructions from one generation to the next. Which of the following is NOTan example of these genetic instructions in humans? a. A height b. skin color c. dimples d. spoken language

85) Which of the following factors can affect the process of natural selection? a. Overproduction of offspring in a species b. Competition among organisms of same species c. Genetic variations within a population d. Niche necessity within a population a. b. c. d.

I, II, and III II only I and III only III and IV only

The process by which organisms that are better adapted to their environment are more likely to survive and reproduce than other organisms of the same species is known as a. b. c. d.

variation the rule of extinction mutualism natural selection

86) Most domesticated animals have been bred for specific, favorable traits. Dairy cows are bred for maximum milk production while dogs are bred for size and color, among other characteristics. The process of humans controlling the breeding of organisms is known as a. natural selection b. selective breeding c. manipulative reproduction d. sheltered breeding

87) Plants have different signals for attracting pollinators. It is not uncommon for the same plant to have more than one signal. Which of the following would NOT be a way in which plants attract pollinators

7TH GRADERS FINAL REVIEW a. b. c. d.

presence of barbs specific texture or pattern strong scents bright colors

88) Chameleons are reptiles that have th ability to hide from predators and prey by blending in with their environment. They can change the pattern and/or color of their skin. This ability is known as — a. b. c. d.

natural selection imitation mimicry camouflage

USE THE FOLLOWING PICTURE FOR THE NEXT TWO QUESTIONS.

a. b. c. d.

gravitropism geotropism autotropism phototropism

90) The roots of the plant in the diagram are exhibiting which behavior? a. b. c. d.

autotropism hydrotropism geotropism phototropism

91) Which of the following is NOT a positive consequenc of flooding? a. Habitat destruction b. Waste removal from rivers and treams c. Improved soil fertility d. Improved water quality

92) Which of the following natural events would most likely have an effect on the global climate?

89) The stem and leaves of the plant in the diagram are exhibiting which behavior?

a. b. c. d.

Tornado Volcanic eruption Earthquake Thunderstorm 93) A drought has resulted in less available grass for grazing

7TH GRADERS FINAL REVIEW animals. Which of the following is NOT a likely response for the animal population? a. To find another food source b. To eat rabbits and other small animals c. To move to a different location d. To begin to die off

94) Which surface type does wind erosion most strongly affect? a. Rocks b. Wet, compacted soil c. Loose, sandy soil d. Dry, compacted soil

95) What is the process by which wind, water, ice, or gravity transports soil and sediment from one location to another called? a. Displacement b. Building c. Erosion d. Mixing 96) Which of the following things would NOT cause mechanical weathering? a. Water b. Acid c. Wind d. Animals

97) Which of the following factors contributed to the development of life on Earth? a. The daily retrograde rotation b. The year-long revolution around the sun c. The presence of liquid water d. The presence of a moon

98) Look at the map of Earth’s climate zones. Where are biomes with the largest number of plant and animal species located? a. b. c. d.

In the polar zones In the tropical zones In the temperate zones Only in the northern portion of the tropical zones

99) Some plants have stems that can hold water and carry on photosynthesis, and almost no leaves. In which type of habitat would this be important? a. b. c. d.

Grassland Rainforest Swamp Desert

7TH GRADERS FINAL REVIEW 100) Which of these actions poses a danger to biodiversity? a. Protecting individual species b. Protecting forests and wetlands c. Preventing industrial wastes from being dumped in the ocean d. Polluting a stream with used motor oil

101) Which of the following strategies would LEAST likely help conserve the environment? a. Reducing pesticide use b. Developing alternative energy sources c. Protecting habitats d. Increasing pesticide use 102) What is the correct order in which primary succession occurs? a. Mosses → lichens → ferns → grasses → shrubs → forest b. Lichens → mosses → ferns → grasses → shrubs → forest c. Lichens → grasses → mosses → ferns → shrubs → forest d. Mosses → ferns → lichens → grasses → shrubs → forest

103) What process is occurring when a forest recovers from a natural disaster such as a fire or flood? a. b. c. d.

Primary succession Combustion Decomposition Secondary succession

104) How do pioneer species prepare an area for other living things? a. By replacing existing species b. By starting the process of succession c. By protecting other species from disease d. By stopping the process of succession

105) Migration is an innate behavior that allows animals to a. adapt to weather changes in their environment. b. survive and reproduce in cold climates. c. respond to seasonal changes by moving from one place to another. d. defend themselves against predators from cold environments.

7TH GRADERS FINAL REVIEW 106) To defend themselves, skunks spray strong-smelling, irritating chemicals at other animals that threaten them. Which of the following describes this behavior? a. A learned offensive trait b. An inherited defensive trait c. An innate offensive trait d. A learned defensive trait

107) Some lizards change color to match the plant leaf or branch on which they are sitting. This defensive behavior is called camouflage. How does this behavior help lizards survive? a. It sharpens their hearing so they can better protect themselves. b. It gives them a clearer view of their surroundings. c. It provides lizards with better balance. d. It makes the lizards hard to see by predators. 108) A biologist notices that a species of moth has either dark coloration or light coloration. In a certain area where tree bark is dark, birds tend to prey on light moths more often than on dark moths. Which of the

following is a reasonable conclusion? a. The light moths are more likely to lay eggs on trees with light bark. b. The light moths have a better chance of surviving than the dark moths. c. More of the light moths will survive once the dark moths have evolved. d. More of the dark moths will survive to pass on their traits to their offspring.

109) Wild roses have five petals. Roses at most flower shops have many more petals. What process did flower breeders use to develop roses with many petals? a. Evolution b. Natural selection c. Selective breeding d. Adaptation 110) Over time, a population will be made up of more individuals with characteristics that will a. help them survive b. not help them survive c. keep them from reproducing d. make them attractive to predators

7TH GRADERS FINAL REVIEW

111) What advantage does a rapidly beating heart have for birds? a. It helps to provide lift by moving the wings up and down. b. It provides a steady stream of oxygen-rich blood to the flight muscles. c. It allows birds to make their own food. d. It provides an anchor for the attachment of large flight muscles.

112) Some plants have fleshy stems and leaves that can store water. In which type of habitat would these adaptations be important? a. Grassland b. Rainforest c. Mountain d. Desert

113) How does adaptation help an organism? a. It helps the organism change colors. b. It improves its ability to survive and reproduce. c. It improves its ability to change species. d. It helps the organism become a fossil.

114) Which of the following statements about leaf structure and function is correct? a. The cuticle is responsible for delivering water to the cells in the leaf. b. Xylem and phloem are responsible for plant reproduction. c. Photosynthesis occurs primarily in the vascular tissue. d. A stoma is an opening in the outer surface of the leaf through which gases can pass.

115) What is the primary function of the cells that make up the majority of cells in the muscular system? a. Ability to carry oxygen b. Ability to send electrical signals c. Ability to cover and protect other cells d. Ability to contract and relax to produce movement 116) What is the name of the body system that includes the lungs? a. Cardiovascular system b. Muscular system c. Respiratory system d. Skeletal system

7TH GRADERS FINAL REVIEW 117) Oxygen from the lungs is transported to all the body’s cells by the a. lymphatic system b. reproductive system c. circulatory system d. respiratory system 118) Which of the following describes the function of the circulatory system? a. Food digestion b. Intake of oxygen and exhalation of carbon dioxide c. Movement of oxygen and nutrients throughout the body d. Transport of electrical signals

119) In multicellular organisms, cells are arranged into groups that work together to perform a common function. What are these groups called? a. b. c. d.

Systems Bones Tissues Joints

120) Like animals, plants have organ systems that perform specific functions. What are the organ systems in plants?

a. Respiration and photosynthesis b. Chlorophyll, roots, shoots, flowers c. Leaf system, root system, stem system d. Circulatory system and reproductive system 121) Which of the following best describes an organ? a. A group of cells that work together to perform a specific job b. A group of tissues that belong to different systems c. A structure made up of a group of tissues that work together to perform a specific job d. A body structure, such as muscles and lungs

122) Where is most of the ATP in cells produced? a. At the endoplasmic reticulum b. At the ribosomes c. At the mitochondria d. At the Golgi complex

123) What is the name of a cell vesicle that contains enzymes that destroy damaged cell organelles?

7TH GRADERS FINAL REVIEW a. b. c. d.

Endoplasmic reticulum Golgi complex Lysosome Mitochondria

124) A membrane-bound organelle that contains the cell’s DNA is the a. phospholipid b. endoplasmic reticulum c. receptor proteins d. nucleus

a. b. c. d.

Endoplasmic reticulum Mitochondria Nucleus Ribosomes

128) What is the organelle that contains DNA and has a role in growth, metabolism, and reproduction called? a. Cell membrane b. Cytoplasm c. Nucleus d. Prokaryote

126) Anything that can perform life processes independently is a. a cell b. an organ system c. a tissue d. an organ

129) Cell structures are important for the cell function. What can you infer about cells with cell walls? a. They are unicellular organisms. b. The cell walls help support the cell and the organism. c. They obtain their nutrition by engulfing other organisms. d. Cytokinesis occurs by pinching off to make two new cells.

127) All organisms need energy to carry out their life processes. Which cell structure is responsible for “burning” sugar to release energy?

130) Which structures are all living things composed of? a. Cells b. Eukaryotes c. Organs d. Prokaryotes

125) Which organelle stores water in a plant cell? a. The nucleus b. A chloroplast c. The central vacuole d. A mitochondrion

7TH GRADERS FINAL REVIEW 131) Organisms grow, repair damaged tissues, and reproduce because a. cells divide b. new DNA is created c. new cells live on old cells d. cell tissue is stored

134) What is the importance of homeostasis? a. It keeps the body stable. b. It keeps the body unstable. c. It makes the body shiver all of the time. d. It keeps the body cold.

132) A cell is a membranecovered structure that contains all of the materials necessary for life a safe, protected environment stimulus for change multicellular organisms that can function independently In a multicellular organism, what does each cell perform?

135) What did Mendel discover by studying pea plant reproduction? a. Four sets of instructions must be present for each characteristic. b. One set of instructions must be present for each characteristic. c. No sets of instructions must be present for each characteristic. d. There must be two sets of instructions for each characteristic.

a. b. c. d.

All functions Specific functions Random functions The function of any cell it touches

133) The cells of your body need energy to carry out life functions. Which of the following body responses is a sign that your cells need more energy? a. Your breathing rate increases. b. You begin to shiver. c. You feel hungry. d. You feel thirsty.

136) of

Each parent gives one set a. genes to the offspring b. alleles to the offspring c. phenotypes to the offspring d. meiosis to the offspring

137) A white flower that has the genotype pp is crossed with a purple flower that has the genotype PP. What are the possible genotypes of the offspring?

7TH GRADERS FINAL REVIEW a. b. c. d.

PP and pp Pp PP Pp

138) In sexual reproduction, two parent cells contribute genetic information to form offspring that are genetically different from both parents. Which of the following best describes an advantage of sexual reproduction? a. Organisms use energy to find a mate. b. Organisms can produce many offspring in a short amount of time. c. Organisms have to depend on other organisms to reproduce. d. Sexual reproduction allows for variation among organisms in a population. 139) Which of the following statements about asexual reproduction is NOT true? a. Only one parent sex cell is needed. b. The offspring are copies of the parent. c. Most single-celled organisms reproduce this way. d. It results in more variation in species than does sexual reproduction.

140) Some animals, such as hydras, reproduce by budding. During budding, a part of the hydra pinches off and forms an organism. Which of the following would be a characteristic of this kind of reproduction? a. Genetic variation occurs among offspring. b. Two parents are required to contribute genetic information. c. Offspring take a long time to develop. d. Offspring are genetically identical to the parent.

141) What part of DNA gives instructions to a cell for expressing traits? a. A genotype b. A gene c. A phenotype d. A homologous pair

142) Where are the instructions for traits found? a. The instructions for traits are found in meiosis. b. The instructions for traits are found on genes. c. The instructions for traits are found in characteristics. d. The instructions for traits are found in mitosis