1. The monomers used to synthesize proteins are called:
a. nucleotides
b. amino acids
c. fatty acids
d. sugars
e. glycerol
2. A nucleotide contains:
a. a pentose sugar
b. a purine or pyrimidine base
c. one or more phosphate group
d.all of these
e. a and b, but not c
3. The molecule shown below is:
a. nucleotides
b. amino acids
c. fatty acids
d. sugars
e. glycerol
2. A nucleotide contains:
a. a pentose sugar
b. a purine or pyrimidine base
c. one or more phosphate group
d.all of these
e. a and b, but not c
3. The molecule shown below is:
a. a purine base
b. a pyrimidine base
c. a sugar
d. a fatty acid
e. an amino acid
4. The molecule shown below is:
b. a pyrimidine base
c. a sugar
d. a fatty acid
e. an amino acid
4. The molecule shown below is:
a. a purine base
b. a pyrimidine base
c. a sugar
d. a fatty acid
e. an amino acid
5. Sulfur is found in:
a. DNA
b. RNA
c. sugars
d.lipids
e. proteins
6. The molecule shown below is:
b. a pyrimidine base
c. a sugar
d. a fatty acid
e. an amino acid
5. Sulfur is found in:
a. DNA
b. RNA
c. sugars
d.lipids
e. proteins
6. The molecule shown below is:
a. DNA
b. RNA
c. a phospholipid
d. a polysaccharide
e. a membrane
7. The molecule shown below is:
b. RNA
c. a phospholipid
d. a polysaccharide
e. a membrane
7. The molecule shown below is:
a. dATP
b. dADP
c. dAMP
d. a polysaccharide
e. a sugar
8. What kind of molecule is represented by the structure below?
CH3CH2CH2CH2CH=CHCH2CH2CH2CH2CH2CH2CH2COOH
a. a sugar
b. an unsaturated fatty acid
c. a saturated fatty acid
d. a disaccharide
e. a phospholipid
9. Which of the following items is a polymer of glucose?
a.starch
b. glycogen
c. cellulose
d. lactose
e. a, b, and c, but not d
10. Lipid bilayers are created from:
a. phospholipids
b. triglycerides
c. fatty acids
d. glycerol
e. proteins
11. What type of chemical bond is illustrated below?
b. dADP
c. dAMP
d. a polysaccharide
e. a sugar
8. What kind of molecule is represented by the structure below?
CH3CH2CH2CH2CH=CHCH2CH2CH2CH2CH2CH2CH2COOH
a. a sugar
b. an unsaturated fatty acid
c. a saturated fatty acid
d. a disaccharide
e. a phospholipid
9. Which of the following items is a polymer of glucose?
a.starch
b. glycogen
c. cellulose
d. lactose
e. a, b, and c, but not d
10. Lipid bilayers are created from:
a. phospholipids
b. triglycerides
c. fatty acids
d. glycerol
e. proteins
11. What type of chemical bond is illustrated below?
a. a sugar-sugar bond
b. a glycerol-fatty acid bond
c. a peptide bond
d. a phosphate-phosphate bond
e. a hydrogen bond
12. Which of the following functions is not associated with proteins?
a. contraction
b. providing structural material
c. enzymes
d. specific binding
e. information storage
13. The following chemical formula is typical of:
b. a glycerol-fatty acid bond
c. a peptide bond
d. a phosphate-phosphate bond
e. a hydrogen bond
12. Which of the following functions is not associated with proteins?
a. contraction
b. providing structural material
c. enzymes
d. specific binding
e. information storage
13. The following chemical formula is typical of:
a.a fatty acid
b. a nucleotide
c. an amino acid
d.a protein
e.a sugar
14. What type of molecule is shown below?
b. a nucleotide
c. an amino acid
d.a protein
e.a sugar
14. What type of molecule is shown below?
a. a phospholipid
b. a triglyceride
c. a fatty acid
d. a nucleotide
e.a peptide
15. Which of the following levels of protein structure is often stabilized by S-S bonds?
a.primary structure
b.secondary structure
c.tertiary structure
d.quaternary structure
e.both c and d
16. The level of polypeptide folding in which the primary sequence coils around itself, stabilized by regularly spaced hydrogen bonds, is called:
a.primary structure
b.alpha helix
c.beta sheet
d.tertiary structure
e.quaternary structure
17. What is the highest level of structure represented below? (Note: in this model, different polypeptide chains are represented by different colors.)
b. a triglyceride
c. a fatty acid
d. a nucleotide
e.a peptide
15. Which of the following levels of protein structure is often stabilized by S-S bonds?
a.primary structure
b.secondary structure
c.tertiary structure
d.quaternary structure
e.both c and d
16. The level of polypeptide folding in which the primary sequence coils around itself, stabilized by regularly spaced hydrogen bonds, is called:
a.primary structure
b.alpha helix
c.beta sheet
d.tertiary structure
e.quaternary structure
17. What is the highest level of structure represented below? (Note: in this model, different polypeptide chains are represented by different colors.)
a.primary structure
b.alpha helix
c.beta sheet
d.tertiary structure
e.quaternary structure
b.alpha helix
c.beta sheet
d.tertiary structure
e.quaternary structure