Practice Quiz #1 - Chemistry and Biochemistry

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Directions: Choose the best answer for each of the following questions. When you are finished, click on the "Ready to be graded" button.

1. What are the basic subunits that make up a protein?

nucleic acids

amino acids

monosaccharides

glycerol and fatty acids

2. A carbohydrate that contains 2 subunits would be called:

a lipid

a polysaccharide

a disaccharide

a fatty acid

3. How many fatty acid molecules must be combined with a glycerol molecule to make a lipid?

1

2

3

4

4. We can test for monosaccharides by using:

Biuret's solution

Lugol's iodine

Sudan III

Benedict's solution

5. How many different types of amino acids are there?

10

20

25

30

6. The type of reaction that happens when monomers are joined to make polymers is a(n)

reduction reaction

oxidation reaction

condensation reaction

hydrolysis reaction

7. Which of the following is NOT true regarding properties of water:

adhesion makes water molecules cling to each other

capillarity allows water to move against gravity

water can absorb large amounts of energy without changing temperature

polarity allows water to dissolve many different substances

8. A solution that contains more hydronium ions than hydroxide ions is

acidic

basic

neutral

alkaline

9. An element that has 8 electrons in its outermost energy level will most likely

form covalent bonds with other elements because it can share electrons

form ionic bonds with other elements because it is an ion

not bond with other elements because its outer level is full

not bond with other elements because it is unstable

10. Enzymes are catalysts that affect chemical reactions by

reducing the activation energy needed to start the reaction

increasing the free energy released by the reaction

causing an endergonic reaction to occur

causing an exergonic reaction to occur

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