2. a Structure That Digests Worn-Out Cells and Bacteria Is Called

Quiz 2

Multiple Choice

1. A neoplasm a. is always malignant b. is also known as a tumor c. may be benign d. b or c

2. A structure that digests worn-out cells and bacteria is called: a. ribosome b. lysosome c. perioxisome d. mitochondria

3. The most important organelle within the cell is the a. cytoplasm b. nucleus c. golgi apparatus d. mitochondria

4. An orderly series of steps in which the DNA in the nucleus of the cell is equally

distributed to two daughter nuclei is called: a. meiosis b. osmosis c. mitosis d. scoliosis 5. The process whereby molecules spread themselves through a medium is called: a. osmosis b. filtration c. diffusion d. synthesis

True/False

6. Every cell is surrounded by cytoplasm.

7. Most of the cell’s energy comes from spherical or rod-shaped organelles called

mitochondria.

8. All cells reproduce at the same rate.

9. Osmosis is the movement of solutes across a semipermeable membrane.

10. An older person possesses 10% fewer cells than a younger adult.