Download Cells B - Depoali

Version B
Cells Exam
Name:______________________
Period:______________________
Multiple Choice (1 point each)
Identify the choice that best completes the statement or answers the question.
____
1. Which term refers to the movement of molecules from an area of higher concentration to an area of lower
concentration?
a. collision
b. diffusion
c. concentration
d. active transport
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2. Which of the following statements is part of the cell theory?
a. Cells can be produced from nonliving matter.
b. Only plants are composed of cells.
c. Cells are one of several basic units of structure and function in living things.
d. All cells are produced from other cells.
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3. The regular cycle of growth and division that cells undergo is called
a. interphase.
b. mitosis.
c. the cell cycle.
d. replication.
____
4. What happens during respiration?
a. Carbohydrates are released into the bloodstream.
b. Oxygen is released into the air.
c. Glucose is broken down, releasing energy.
d. Water and carbon dioxide are converted into energy.
____
5. How does a bacterial cell differ from a plant or animal cell?
a. It does not have a nucleus.
b. It has no cytoplasm.
c. It has no organelles.
d. It is larger.
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6. Which organelles release chemicals that break down large food particles into smaller ones?
a. endoplasmic reticulum
b. Golgi bodies
c. lysosomes
d. vacuoles
____
7. What is the function of a cell wall?
a. to protect and support the cell
b. to prevent oxygen from entering the cell
c. to perform different functions in each cell
d. to prevent water from passing through it
____
8. Which organelle is the control center of a cell?
a. ribosome
b. mitochondrion
c. nucleus
d. chloroplast
Version B
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9. Which organelles store food and other materials needed by the cell?
a. vacuoles
b. ribosomes
c. mitochondria
d. chloroplasts
____ 10. Unlike the cell wall, the cell membrane
a. protects the nucleus with a rigid layer of cellulose.
b. is found in all cells.
c. is made of chromatin.
d. produces energy for the cell.
____ 11. What is copied during replication?
a. the cell’s DNA
b. chromosomes
c. the cell’s organelles
d. two daughter cells
____ 12. Which of the following best describes the function of mitochondria?
a. They store energy from food molecules.
b. They produce nucleic acids that release energy.
c. They store energy from sunlight.
d. They convert energy from food molecules into energy the cell can use.
____ 13. Why is water important for a cell?
a. Water is an essential organic compound for the body.
b. All proteins are made of water.
c. Most chemical reactions in cells require water.
d. Water is the main ingredient in DNA.
____ 14. What happens during photosynthesis?
a. The cell uses glucose to make oxygen.
b. The cell uses the energy in sunlight to make food.
c. The cell uses oxygen to make food.
d. The cell uses the energy in sunlight to make carbon dioxide.
____ 15. During what stage of the cell cycle does replication occur?
a. cytokinesis
b. interphase
c. mitosis
d. Prophase
____ 16. The invention of the microscope made it possible for people to discover
a. skin.
b. cells.
c. plants.
d. animals.
____ 17. Which term refers to the movement of materials through a cell membrane without using the cell’s energy?
a. passive transport
b. concentration
c. active transport
d. collision
Version B
____ 18. Mitosis is the stage of the cell cycle during which
a. the cell divides into two new cells.
b. the cell’s DNA is replicated.
c. the cell’s nucleus divides into two new nuclei.
d. the cell’s cytoplasm divides.
____ 19. What is the function of a cell membrane?
a. to form a hard outer covering for the cell
b. to perform different functions in each cell
c. to control what enters and leaves the cell
d. to support the cell
____ 20. Which term refers to the diffusion of water molecules through a selectively permeable membrane?
a. engulfing
b. osmosis
c. passive transport
d. active transport
Short Answer (2 points each)
21. List drawings 1-5 in their correct order, beginning with the drawing that represents interphase.
22. Identify the structures labeled B. What do these structures contain?
Version B
Use the diagram to answer each question.
21. Identify the large round structure labeled D and describe its function.
22. Is the cell shown a bacterial cell? Explain your reasoning.
23. Identify the structures labeled B and describe their function.
Version B
Essay (5 points each)
26. Describe the process of photosynthesis including what types of cells it occurs in.
27. Contrast mitochondria and chloroplasts.
28. Describe the process of cellular respiration including what types of cells it occurs in.
29. You are looking at the inside of a cell. Explain how you can tell whether the cell is animal, bacterial, or plant.
Version A