Chapter 2 Life Science - Cells

The part of the cell that regulates what comes in and what goes out is the

• a. cell membrane

• b. cell wall

• c. Golgi apparatus

• d. mitochondrion

Cell walls are found around the cells of which of the following organisms?

• a. hermit crabs

• b. humans

• c. maple trees

• d. tigers

What proteins often found in lysosomes speed up or slow down chemical reactions?

• a. vesicles

• b. DNA

• c. enzymes

• d. ribosomes

The "energy currency" used to power cellular processes is

• a. ADP

• b. ATP

• c. glucose

• d. oxygen

Multicellular organisms can be composed of either prokaryotic or eukaryotic cells.

• True

• False

Cells found in muscle tissue look similar and act in very similar ways to cells found in other tissues throughout the body.

• True

• False

Osmosis and diffusion are both forms of passive transport-they happen without the cell doing any work.

• True

• False

Evolutionists believe that the more complex eukaryotic cells evolved into the simpler prokaryotic cells.

• True

• False

Prokaryotic cells evolving from nonliving materials has never been observed.

• True

• False

Photosynthesis uses energy from the sun to convert sugar and oxygen into carbon dioxide and water.

• True

• False