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Multiple-choice questions for biology subjects, the structure and functions of large biological molecules
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n Chapter 5 The Structure and Function of Large BiologicalMolecules
1) For this pair of items, choose the option that best describes their relationship.
(A) The number of alpha glucose 1-4 linkages in cellulose
(B) The number of alpha glucose 1-4 linkages in starch
A) Item (A) is greater than item (B). B) Item (A) is less than item (B).
C) Item (A) is exactly or very approximately equal to item (B).
D) Item (A) may stand in more than one of the above relations to item (B).
Answer: B
2) For this pair of items, choose the option that best describes their relationship.
(A) The probability of finding chitin in fungal cell walls
(B) The probability of finding chitin in arthropod exoskeletons
A) Item (A) is greater than item (B). B) Item (A) is less than item (B).
C) Item (A) is exactly or very approximately equal to item (B).
D) Item (A) may stand in more than one of the above relations to item (B).
Answer: C
3) For this pair of items, choose the option that best describes their relationship.
(A) The number of cis double bonds in saturated fatty acids
(B) The number of cis double bonds in unsaturated fatty acids
A) Item (A) is greater than item (B). B) Item (A) is less than item (B).
C) Item (A) is exactly or very approximately equal to item (B).
D) Item (A) may stand in more than one of the above relations to item (B).
Answer: B
4) For this pair of items, choose the option that best describes their relationship.
(A) The probability that amino acids with nonpolar side chains are hydrophobic.
(B) The probability that amino acids with side chains containing a carboxyl group
are hydrophobic.
A) Item (A) is greater than item (B). B) Item (A) is less than item (B).
C) Item (A) is exactly or very approximately equal to item (B).
D) Item (A) may stand in more than one of the above relations to item (B).
Answer: A
5) For this pair of items, choose the option that best describes their relationship.
(A) The number of purines in the DNA strand 5ʹ-AAGAGGAGAAA-3 ʹ
(B) The number of pyrimidines in the DNA strand 5ʹ-AAGAGGAGAAA-3 ʹ
A) Item (A) is greater than item (B). B) Item (A) is less than item (B).
C) Item (A) is exactly or very approximately equal to item (B).
D) Item (A) may stand in more than one of the above relations to item (B).
Answer: A
6) Which of the following is not a polymer? A) glucose
B) starch C) cellulose D) chitin
E) DNA
Answer: A
,7) What is the chemical mechanism by which cells make polymers from
monomers? A) phosphodiester linkages
B) hydrolysis
C) dehydration reactions
D) ionic bonding of monomers
E) the formation of disulfide bridges between monomers
Answer: C
8) How many molecules of water are needed to completely hydrolyze a polymer
that is 11 monomers long?
A) 12 B) 11 C) 10
D) 9 E) 8
Answer: C
9) Which of the following best summarizes the relationship between dehydration
reactions and hydrolysis?
A) Dehydration reactions assemble polymers, and hydrolysis reactions break
down polymers.
B) Macromolecular synthesis occurs through the removal of water and digestion
occurs through the addition of water.
C) Dehydration reactions can occur only after hydrolysis.
D) Hydrolysis creates monomers, and dehydration reactions break down
polymers.
E) A and B are correct.
Answer: E
10) Which of the following polymers contain nitrogen? A) starch
B) glycogen C) cellulose D) chitin
Answer: D
11) The molecular formula for glucose is C6H12O6. What would be the
molecular formula for a molecule made by linking three glucose molecules
together by dehydration reactions?
A) C18H36O18 B) C18H30O15
C) C6H10O5
D) C18H10O15 E) C3H6O3
Answer: B
12) The enzyme amylase can break glycosidic linkages between glucose
monomers only if the monomers are the α form. Which of the following could
amylase break down?
A) glycogen B) cellulose
C) chitin
, D) A and B only
E) A, B, and C
Answer: A
13) On food packages, to what does the term ʺinsoluble fiber ʺ refer? A) cellulose
B) polypeptides C) starch
D) amylopectin
E) chitin
Answer: A
14) A molecule with the chemical formula C6H12O6 is probably a
A) carbohydrate. B) lipid.
C) monosaccharide D) A and B only.
E) A, B, and C.
Answer: E
Figure 5.1
15) If 2 molecules of the general type shown in Figure 5.1 were linked together,
carbon 1 of one molecule to carbon 4 of the other, the single molecule that
would result would be
A) maltose. B) fructose. C) glucose.
D) galactose. E) sucrose.
Answer: A
16) Which of the following descriptors is true of the molecule shown in Figure
5.1? A) hexose
B) fructose
C) glucose
D) A and B only
E) A and C only
Answer: E
17) Lactose, a sugar in milk, is composed of one glucose molecule joined by a
glycosidic linkage to one galactose molecule. How is lactose classified?
A) as a pentose B) as a hexose
C) as a monosaccharide D) as a disaccharide
E) as a polysaccharide
Answer: D
Topic: Concept 5.2
Skill: Knowledge/Comprehension
18) All of the following are polysaccharides except A) glycogen
B) starch C) chitin D) cellulose
E) amylopectin
Answer: A
Topic: Concept 5.2
Skill: Knowledge/Comprehension
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