7th Grade Science Benchmark Exam #2 2010-2011
1. What can you see with a classroom microscope?
A
B
C
D
atoms
molecules
cells
all of the above
2. You are made up of about 100 trillion cells; however, you began as:
A
B
C
D
an organ.
a glob of gooey cytoplasm.
an organelle.
a single cell.
3. Which is the BEST explanation of why you breathe?
A
B
C
D
your respiratory system needs oxygen
your lungs need oxygen
your blood needs oxygen
your cells need oxygen
4. The heredity material in a cell is:
A
B
C
D
DNA.
Protein.
ATP.
Cytoplasm.
5. Which cell part allows nutrients in and waste products out?
A
B
C
D
cell membrane
chloroplast
nucleus
mitochondria
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6. Which organelle below is found only in plants and algae?
A
B
C
D
ribosome
endoplasmic reticulum
mitochondria
chloroplast
7. Most of the energy in your cells is produced in the:
A
B
C
D
mitochondria.
cell wall.
nucleus.
chloroplasts.
8. Why do plant cells contain mitochondria?
A
B
C
D
mitochondria use the Sun’s energy to make sugar.
mitochondria release stored energy from sugar.
mitochondria store sugar.
plant cells do not contain mitochondria.
Examine the diagram below and answer the questions that follow (9 & 10).
9. Which of the cells in the diagram above is an animal cell?
A
B
C
D
cell 1
cell 2
cell 3
none of the above
10. Which of the following as shown in the diagram above is the structure labeled
A?
A cell wall
B vacuole
C chloroplast
2010-2011 Grade 7 Science Benchmark Exam #2
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D DNA
11. Your body needs to take in oxygen and food, and get rid of carbon dioxide and
waste. Which of these things does every single cell in your body need?
A
B
C
D
to take in food and get rid of waste
to take in oxygen and get rid of carbon dioxide
to get rid of carbon dioxide and waste
the same things the body needs
12. The cells of two multi-celled organisms are analyzed. The results are shown in
the table below.
Organelle/Structure
Organism A
Organism B
Ribosomes
Present
Present
Cell membrane
Present
Present
Cell wall
Present
Absent
Nucleus
Present
Present
Mitochondria
Present
Present
Chloroplast
Present
Absent
Based on this information, it can be concluded that:
A
B
C
D
Organism A is an animal, and Organism B is a plant.
Organisms A and B are both plants.
Organism A is a plant and Organism B is an animal.
Organisms A and B are both animals.
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13. Sarah looked at some pond water with a microscope. She used the low-power
objective lens to look at some green algae. The picture below shows what Sarah saw
through the microscope.
If Sarah switched the lens from low power to high power, what would she see in the
field of view?
A
B
C
D
a lot more cells than with the low-power view, but in lesser detail
the same number of cells as with the low-power view, but in lesser detail
the same number of cells as with the low-power view, but in greater detail
fewer cells than with the low-power view, but in greater detail
14. Which of the following is made of cells?
A
B
C
D
nucleus
cactus
water
molecule
15. Which is NOT something that all cells do?
A
B
C
D
carry out photosynthesis
use energy
remove waste
exchange materials with their surroundings
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16. These cells all work together to do the same thing.
A group of cells like this is called:
A
B
C
D
an organ.
an organism.
a tissue.
a system.
17. The equation below shows the process called:
glucose + oxygen  water + carbon dioxide + ATP
A
B
C
D
cellular respiration.
digestion.
diffusion.
photosynthesis.
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18. The picture below shows a cell. Which structure stores most of the genetic
information?
A
B
C
D
mitochondrion
vacuole
nucleus
cytoplasm
19. Which gas is forming in the test tube in the experiment shown below?
A
B
C
D
air
oxygen
carbon dioxide
a vacuum
2010-2011 Grade 7 Science Benchmark Exam #2
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7th Grade Science Benchmark Exam #2 2010-2011
Answer Section
1. C
2. D
3. D
4. A
5. A
6. D
7. A
8. B
9. C
10. A
11. D
12. C
13. D
14. B
15. A
16. C
17. A
18. C
19. B
7a
1.0
5a
1c
1a
1d
1d
1d
1b
1b
1a
1b
7a
1.0
1a
5a
1d
1c
1d
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