Cells and Microorganisms Review

1. What part of the cell helps control what enters and leaves the cell?

• mitochondria
• cytoplasm
• cell membrane
• nucleus

2. Which of the following is NOT found in an animal cell?

• a.) cell wall
• b.) cell membrane
• c.) chloroplast
• d.) both a and c

3. Which of these is considered to be the “brain” of a cell, directing all of its activities?

• a.) nucleus
• b.) cytoplasm
• c.) cell membrane
• d.) vacuole

4. What type of instrument is used to look at cells?

• a.) glasses
• b.) telescope
• c.) microscope
• d.) binoculars

5. Which three structures are found in both animal and plant cells?

• a.) cell membrane, chloroplasts, and mitochondria
• b.) cytoplasm, a cell wall, and nucleus
• c.) nucleus, chloroplasts, and cell wall
• d.) nucleus, cell membrane, and cytoplasm

6. What is the main function of the chloroplast?

• a) to remove waste materials
• b.) to control all the processes in the cell
• c.) to absorb light energy and make food
• d.) to control the shape of the cell

7. In a plant cell, this is a stiff wall that surrounds the membrane, giving the cell a rigid, boxlike shape?

• a.) cell membrane
• b.) cell wall
• c.) cytoplasm
• d.) ribosome

8. These organelles releases the energy that the cell needs. The "power house" of the cell.

• a.) cell membrane
• b.) ribosome
• c.) cytoplasm
• d.) mitochondria

9. A gel-like fluid in which the organelles are found.

• a.) cell membrane
• b.) ribosome
• c.) cytoplasm
• d.) mitochondria

10. According to the Cell Theory new cells come from

• a.) existing cells
• b.) dead cells
• c.) they crystalize
• d.) plant cells