Site MapHelpFeedbackMultiple Choice
Multiple Choice
(See related pages)



1

A peptide bond has ______bond character.
A)Double bond
B)Pyrophosphate
C)Disulfide
D)Carboxylic acid anhydride
E)Hydrophobic
2

Peptide bonds are:
A)Tetrahedral
B)Octahedral
C)Planar
D)Aromatic
E)Prismatic
3

Which is not true about the hydrogen bonds in an a-helix:
A)Involve the amide carbonyl
B)Involve the amide hydrogen
C)Involve the R-groups
D)Parallel to the long axis of the helix
E)Stabilize a right handed helix
4

Vitamin C is involved in the biosynthesis of :
A)Immunoglobins
B)Silk
C)Hemoglobin
D)Collagen
E)Carbonic anhydrase
5

Adult hemoglobin is a tetramer that is best described as:
A)a, b, g, d
B)2 a, 2 g
C)2 a, 2 b
D)2 a, g, d
E)2 b, g, d
6

Sickle cell anemia is caused by:
A)An iron deficiency
B)A virus
C)Heredity
D)A single amino acid replacement from the norm
E)C and D
7

An individual with _____has resistance to malaria.
A)Two copies of the sickle cell gene
B)One copy of the sickle cell gene and one copy of the normal gene
C)Two copies of the normal gene
D)None of these. There is no relationship between sickle cell anemia and malaria.
8

The conversion of a cysteine to a cystine involves a ______reaction.
A)An oxidation
B)A reduction
C)An hydrolysis
D)A dehydration
E)An ionization
9

Essential amino acids are:
A)The twenty amino acids that are used to synthesize proteins.
B)These are the vitamins that are needed to maintain good health.
C)The amino acids that cannot be synthesized by the organism involved and must be supplied in the diet.
D)The amino acids that are lacking in a vegetarian diet.
E)The amino acids that are just needed by humans.
10

A complete protein supplies:
A)All twenty amino acids that are utilized by humans.
B)All of the nonessential amino acids.
C)All of the essential amino acids.
11

In the pleated sheet structures the hydrogen bonds are:
A)In the plane of the sheet and parallel to the peptide chains.
B)In the plane of the sheet and perpendicular to the peptide chains.
C)Out of the plane of the sheet and parallel to the peptide chains.
D)Out of the plane of the sheet and perpendicular to the peptide chains.
E)None of these.
12

Which of these amino acids would be least likely to be involved in hydrophobic interactions?
A)Valine
B)Leucine
C)Isoleucine
D)Arginine
E)Methionine
13

Which of the following would be least likely to be involved in salt bridges?
A)Lysine
B)Leucine
C)Aspartate
D)Arginine
E)Glutamate





To learn more about the book this website supports, please visit its Information Center.
(c)2004 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


General, Organic and BiochemOnline Learning Center with Powerweb

Home > Chapter 19 > Self Quiz 2