Question 1

Which of the following is true of glycolipids?

Accepted Answer

A)  Glycolipids are usually found on the exterior surface of the plasma membrane.
B)  Usually more than 10 sugar units are attached to the glycolipid.
C)  Laurate is a glycolipid.
D)  Fructose and sucrose are often part of glycolipids.
E)  Glycolipids contain phosphatidic acid.F) A) and B)
G) All of the above

Question 2

Which of the following is NOT a major functional class of proteins?

Accepted Answer

A)  structural
B)  regulatory
C)  enzymes
D)  trifunctional
E)  motilityF) A) and B)
G) B) and D)

Question 3

Based on the following amino acid sequence, which region(s) is/are hydrophobic? 1[K- K- N- Q] - 2[A- G- G- V] - 3[Y- C- S- R] - 4[H- E- C- Y]

Accepted Answer

A)  region 2
B)  region 4
C)  region 1
D)  region 3
E)  Both regions 1 and 3F) C) and D)
G) A) and E)

Question 4

Which of the following is NOT a polymer of numerous monomer units?

Accepted Answer

A)  proteins
B)  carbohydrates
C)  lipids
D)  starch
E)  nucleic acidsF) A) and D)
G) A) and C)

Question 5

Hydrogen bonding is most important in stabilizing the structure of many proteins.

Accepted Answer

A)  tertiary
B)  quaternary
C)  primary
D)  secondary
E)  all of the aboveF) A) and B)
G) None of the above

Question 6

Which of the following amino acids is a nonpolar (hydrophobic) amino acid?

Accepted Answer

A)  tyrosine
B)  aspartate
C)  serine
D)  lysine
E)  valineF) A) and E)
G) B) and E) E

Question 7

The level of protein structure that is even higher than quaternary structure is

Accepted Answer

A)  the linear sequence of amino acids.
B)  subunit interactions and assembly.
C)  hydrogen bond formation.
D)  enzyme complex formation.
E)  R- group interactions.F) B) and D)
G) D) and E)

Question 8

Which of the following is NOT correctly matched?

Accepted Answer

A)  enzymatic protein - collagen
B)  hormonal protein - insulin
C)  storage protein - seed proteins
D)  defense protein - antibody
E)  motility proteins - actin and myosinF) C) and D)
G) B) and E)

Question 9

Which of the following is NOT true of phospholipids?

Accepted Answer

A)  Phospholipids are important in membrane structure.
B)  Phosphatidic acid contains two fatty acids and a phosphate group.
C)  Serine is a molecule that may be part of a phosphoglyceride.
D)  Sphingolipids are the predominant phospholipid in membranes.
E)  Phospholipids are amphipathic.F) A) and C)
G) A) and D)

Question 10

Which of the following is true of transfer RNA?

Accepted Answer

A)  It is an important component of ribosomes.
B)  It serves as the site of protein synthesis.
C)  It is responsible for correct positioning of amino acids in a polypeptide.
D)  It functions in replication only.
E)  It is responsible for the correct positioning of amino acids in a nascent polypeptide.F) D) and E)
G) A) and B)

Question 11

Which of the following is true of fatty acids?

Accepted Answer

A)  Fatty acids are synthesized by the stepwise addition of three carbon units.
B)  Saturated fatty acids have no double bonds between carbons.
C)  Unsaturated fatty acids are usually branched.
D)  Laurate is an unsaturated fatty acid.
E)  Fatty acids with 24 carbons are most common.F) B) and E)
G) A) and B) B

Question 12

Which of the following has the greatest number of glycosidic bonds?

Accepted Answer

A)  glucose
B)  DNA
C)  amylose
D)  vitamin A
E)  triacylglycerolF) B) and D)
G) A) and D)

Question 13

Which of the following is a terpene?

Accepted Answer

A)  testosterone
B)  dolichol
C)  glycerol
D)  phenanthrene
E)  vitamin AF) B) and D)
G) C) and E)

Question 14

Which of the following is NOT one of the six classes of lipids?

Accepted Answer

A)  steroids
B)  fatty acids
C)  terpenes
D)  pectins
E)  triacylglycerolsF) C) and D)
G) D) and E)

Question 15

Structurally, starch exists as both unbranched polysaccharide chains called and branched polysaccharide chains called .

Accepted Answer

amylose; a...

Question 16

Which of the following is a disaccharide?

Accepted Answer

A)  lactose
B)  fructose
C)  galactose
D)  glucose
E)  amyloseF) B) and D)
G) All of the above

Question 17

Which of the following is NOT a characteristic of DNA?

Accepted Answer

A)  antiparallel
B)  double- stranded
C)  complementary
D)  contains ribose
E)  composed of nucleotidesF) B) and E)
G) None of the above D

Question 18

The primary structure of a protein

Accepted Answer

A)  is important for determining the secondary and tertiary structure of a protein.
B)  is important both genetically and structurally.
C)  is the linear sequence of amino acids that are linked together by peptide bonds.
D)  is simply the order of amino acids from one end of the protein to another.
E)  all of the aboveF) A) and B)
G) A) and D)

Question 19

Which of the following is true of purines?

Accepted Answer

A)  Adenine's bonding to thymine is stronger than is guanine's to cytosine.
B)  Cytosine is a purine.
C)  Purines have a double- ringed structure.
D)  Purines bind readily to deoxyribose, but not ribose.
E)  Both adenine and thymine are purines.F) C) and D)
G) B) and E)

Question 20

Which of the following is an example of a defensive protein?

Accepted Answer

A)  cell surface receptor
B)  keratin
C)  antibody
D)  hormone
E)  myosinF) All of the above
G) D) and E)

Exam 3: The Macromolecules of the Cell

Which of the following is true of glycolipids?

Correct AnswerverifiedShow Answer

Which of the following is NOT a major functional class of proteins?

Correct AnswerverifiedShow Answer

Based on the following amino acid sequence, which region(s) is/are hydrophobic? 1[K- K- N- Q] - 2[A- G- G- V] - 3[Y- C- S- R] - 4[H- E- C- Y]

Correct AnswerverifiedShow Answer

Which of the following is NOT a polymer of numerous monomer units?

Correct AnswerverifiedShow Answer

Hydrogen bonding is most important in stabilizing the structure of many proteins.

Correct AnswerverifiedShow Answer

Which of the following amino acids is a nonpolar (hydrophobic) amino acid?

Correct AnswerverifiedE

The level of protein structure that is even higher than quaternary structure is

Correct AnswerverifiedShow Answer

Which of the following is NOT correctly matched?

Correct AnswerverifiedShow Answer

Which of the following is NOT true of phospholipids?

Correct AnswerverifiedShow Answer

Which of the following is true of transfer RNA?

Correct AnswerverifiedShow Answer

Which of the following is true of fatty acids?

Correct AnswerverifiedB

Which of the following has the greatest number of glycosidic bonds?

Correct AnswerverifiedShow Answer

Which of the following is a terpene?

Correct AnswerverifiedShow Answer

Which of the following is NOT one of the six classes of lipids?

Correct AnswerverifiedShow Answer

Structurally, starch exists as both unbranched polysaccharide chains called and branched polysaccharide chains called .

Correct Answerverifiedamylose; a...View AnswerShow Answer

Which of the following is a disaccharide?

Correct AnswerverifiedShow Answer

Which of the following is NOT a characteristic of DNA?

Correct AnswerverifiedD

The primary structure of a protein

Correct AnswerverifiedShow Answer

Which of the following is true of purines?

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Which of the following is an example of a defensive protein?

Correct AnswerverifiedShow Answer

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E

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B

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amylose; a...
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D

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