1. The number of protons in an atom is called the______________.
a. atomic number
b. atomic mass
c. atomic weight
d. molecular weight

2. In biology, a well-supported hypothesis is referred to as a ___________.
a. prediction
b. theory
c. cation
d. variable

3. Which of the following is chemically unreactive?
a. an atom with 1 electron
b. an atom with 4 electrons
c. an atom with 8 electrons
d. an atom with 10 electrons

4. How many grams of calcium are dissolved in one liter of a 1 M calcium solution? [The atomic number is 20, the atomic mass/weight is 40, and there are 2 electrons in its outer shell.]
a. 1
b. 2
c. 20
d. 40
e. 62

5. How does a pH=4 compare to a pH=7?
a. it is more acidic
b. it is more basic
c. it is less acidic

6. ALL macromolecules are formed from covalently-bonded _________________.
a. amino acids
b. monomers
c. polymers
d. nucleic acids
e. fatty acids

7. Which of the following is TRUE?
a. The creation of a protein involves the hydrolysis of amino acids.
b. The creation of a lipid involves the hydrolysis of nucleic acids.
c. The creation of a protein involves the hydrolysis of fatty acids.
d. The digestion of a carbohydrate involves the loss of water.
e. The digestion of a protein involves the addition of water.

8. Which of the following is made of many (more than 2) monosaccharides?
a. a disaccharide
b. a nucleotide
c. a polysaccharide

Answers (1-9): a, b, d, d, a, b, e, c