Biology 225

Sample Questions Exam 1

1. ____________ are eukaryotic photosynthetic organisms with cell walls composed of cellulose.

a. Helminths

b. Algae

c. Protozoa

d. Viruses

2. _____________ are parasitic multicellular heterotrophs that live in the digestive tract of animals.

a. Archaea

b. Bacteria

c. Helminths

d. Protozoa

3. Sodium binds ionically to iodine; the chemical formula of the resulting compound would be:

a. NaI₂

b. NaI₂

c. Na₂I

d. NaI

4. ____________ reactions generally release energy.

a. Endergonic

b. Exergonic

c. Anabolic

d. All of the above

5. Which of the following is not a property of water?

1. Water is an excellent solvent
2. Water is a reactant or product in many chemical reactions in cells
3. Water is a nonpolar molecule
4. Water molecules form hydrogen bonds with other water molecules

5. ____________ is a disaccharide composed of 2 glucose molecules bound together.

a. Glycogen

b. Chitin

c. Ribose

d. Maltose

6. A beta pleated sheet is a short region of folding that is a _______________ level of structure in a protein.

1. primary
2. secondary
3. tertiary
4. quaternary

7. ______________ are vesicles with digestive enzymes to break down macromolecules & cell debris.

1. Lysosomes
2. Nucleoli
3. Vacuoles
4. Ribosomes

8. Which of the following would NOT be considered a eukaryote?

a. Fungus

b. Animal

c. Protozoan

d. Bacterium

9. In a(n) _____________ solution, the net solute concentration of the solution equals that inside the cell.

a. Isotonic

b. Hypotonic

c. Hypertonic

d. All of the above

10. The Calvin-Benson cycle results in the release of ____________ molecules, which are used to synthesize glucose molecules.

a. NADH

b. chlorophyll

c. glyceraldehyde 3-phosphate

d. acetyl coA

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