1. Phagocytosis _________________.
a. is a form of exocytosis
b. is "cell drinking," and brings fluids into the cell
c. takes molecules, but not fluids, out of a cell
d. is a form of endocytosis
e. brings molecules into a cell via vacuoles

2. Which statement is FALSE regarding enzymes?
a. Enzymes are very specific.
b. Enzymes are affected by temperature.
c. Enzymes increase the activation energy of a reaction.
d. Enzymes can be assisted by coenzymes.
e. Enzymes can be affected by competitive inhibition.

3. How do eukaryotes differ from prokaryotes?
a. Eukaryotes may possess flagella but prokaryotes do not.
b. Eukaryotes possess cytosol but prokaryotes do not.
c. Prokaryotes possess cytoplasm but eukaryotes do not.
d. Prokaryotes possess ribosomes but eukaryotes do not.
e. Eukaryotes possess a nucleus but prokaryotes do not.

4. Which of the following will happen to a muscle cell placed in a hypertonic solution?
a. It will shrink.
b. It will swell up and burst.
c. It will not change in size.

5. The diffusion of water across a membrane:
a. requires energy and is a type of active transport.
b. is the result of "pumping" via facilitated diffusion.
c. is passive and is called osmosis.
d. only occurs via channels called osmopores.

6. Which is an exergonic metabolic reaction?
a. The synthesis of muscle cells resulting from weightlifting.
b. The creation of sugars during photosynthesis.
c. The hydrolysis of glycogen that is stored in liver cells.
d. Enzymatic denaturation.

Answers: d, c, c, a, c, c