Chemistry Review
1. The type of bond holding Na+ and Cl- ions in NaCl is a(n):
a. Ionic bond
b. Covalent bond
c. Hydrogen bond
d. Double bond
e. None of the above
2. The type of bond holding C and H atoms in glucose is a(n):
a. Ionic bond
b. Covalent bond
c. Hydrogen bond
d. Double bond
e. None of the above
3. Cells grown at high temperatures should have:
a. More lipids
b. More saturated lipids
c. Fewer sterols
d. More carbohydrates
e. Less DNA
4. Which of the following molecules contains long hydrocarbon chains?
a. Carbohydrates
b. Lipids
c. Nucleic acids
d. Proteins
e. None of the above
5. Which of the following molecules contains amino groups?
a. Carbohydrates
b. Lipids
c. Nucleic acids
d. Proteins
e. None of the above
6. Ribose and adenine can be found in RNA and:
a. ATP
b. Carbohydrates
c. DNA
d. Proteins
e. Lipids
7. Which of the following statements about the atom C-12 is not true?
a. It has 6 protons in its nucleus
b. It has 12 neutrons in its nucleus
c. Its atomic number is 6
d. Its atomic weight is 12
e. It has 6 electrons
8. Bacteria with the mer gene can modify mercury as shown in the following equation: Hg (2+) --> Hg (0). These bacteria are:
a. Hydrolyzing mercury
b. Oxidizing mercury
c. Synthesizing mercury
d. Reducing mercury
e. None of the above
9. Phosphorus is found in all of the structures of a cell except its:
a. Plasma membrane
b. Proteins
c. ATP
d. RNA
e. None of the above
10. Nitrogen is found in all of the structures of a cell except its:
a. Enzymes
b. Carbohydrates
c. ATP
d. RNA
e. None of the above
11. All of the following are true about starch and cellulose except they are:
a. Digested by animals
b. Polymers of glucose
c. Produced by plants
d. Digested by many bacteria and fungi
e. Insoluble in water
12. If the antibiotic nystatin combines with sterol molecules, what effect will it have on a cell?
a. The cell's contents will leak out
b. The cell's proteins will be denatured
c. The cell's DNA will be mutated
d. The cell would be unable to make ATP
e. The cell's ribosomes will be altered
13. All of the following statements about cellulase are true except which one?
a. It is made by some bacteria
b. It is a carbohydrate
c. It is used to degrade cellulose
d. It is a protein
e. It is made by some fungi
14. Which of the following components of protein structure is the basic structure on which the others are based?
a. A chain of amino acids
b. A helix
c. Folds formed by disulfide bonds
d. Two polypeptides
e. A pleated sheet
15. Which of the following terms does not belong with the others?
a. Deoxyribose
b. Phosphate group
c. Nitrogen
d. Amino group
e. Adenine