Natural Science Practice Exam

Natural Science

Practice Exam

1. A student uses a microscope with two lenses to view a specimen. The objective lens has a magnification of 10X and the ocular lens has a magnification of 10X. What is the total magnification?

1. -10X
2. 10X
3. 20X
4. 100X

1. A student observes a cell from a multicellular organism. The cells all have chloroplasts and cell walls. The cells are most likely from which organism?

1. animal
2. bacteria
3. plant
4. fungi

1. Study the cell diagram below.

Which structure is found in plant cells, but not in animal cells?

1. A
2. B
3. C
4. both D and E

1. A food manufacture wants to use UV rays to kill off bacteria on the food it manufactures. What is the name of this technique?

1. pasteurization
2. desiccation
3. photosynthesis
4. irradiation

1. The scientific name for a species of clownfish is Amphiprion percula. What can you infer from this information?

1. The clownfish belongs to the genus percula.
2. Clownfish are in the protist kingdom.
3. The clownfish belongs to the genus amphiprion.
4. The clownfish is a prokaryotic organism.

1. Which object would you likely use a dissecting microscope to view?

1. a paramecium
2. the pattern on a dragonfly
3. liver cells
4. frog skin cells

1. Which person did not work to prevent the spread of disease?

1. Pasteur
2. Jenner
3. Linnaeus
4. Fleming

[pic 1][pic 2]

1. If you observe a cell that contains chloroplasts, what can you infer about the organism the cell came from?[pic 3]

1. The organism is a fungus.
2. The organism obtains its food by eating other organisms.
3. The organism can make its own food through photosynthesis.[pic 4]
4. The organism does not have cell walls around its cells.[pic 5]

[pic 6]

1. Which organelle contains the cell’s genetic material?

1. mitochondrion
2. nucleus
3. chloroplast
4. rough endoplasmic reticulum

1. Ribosomes read the genetic code to produce proteins. Which structure makes ribosomes?

1. nuclear envelope
2. nucleus
3. nucleoid
4. nucleolus

Answers: 1. D, 2. C, 3. B, 4. D, 5. C, 6. B, 7. C,
8. C, 9. B, 10. D