Question 1

What sequence of bases on the second strand of DNA is complementary to the following?
(5') GCATTA (3')

Accepted Answer

(3') CGTAA...

Question 2

Rank DNA, mRNA, and tRNA from largest to smallest.

Accepted Answer

A)   DNA > mRNA > tRNA
B)   DNA > tRNA > mRNA
C)   mRNA > tRNA > DNA
D)   mRNA > DNA > tRNA
E)   tRNA > mRNA > DNAF) A) and E)
G) A) and D) A

Question 3

Male sex hormones like testosterone are called:

Accepted Answer

A)   androgens
B)   estrogens
C)   progestins
D)   glucocorticoidsE) A) and B)
F) C) and D)

Question 4

Which of the following is 2-deoxy-D-ribose?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) A) and B)
F) B) and C)

Question 5

Draw the structure of glyceryl trimyristate and compare its melting point to that of glyceryl tristearate.

Accepted Answer

Melting point is low...

Question 6

Consider the following structure.  a) Circle my nucleoside.
b) Draw a box around any nurleatide
c) Identify as DNA GI RNA.

Accepted Answer

b)

c) DNA

Question 7

When soaps disperse in water, the long hydrocarbon tails cluster together in a hydrophobic ball, while the ionic heads on the surface of the cluster stick out into the water. These spherical clusters are called:

Accepted Answer

A)   fatty acid esters
B)   triacylglycerols
C)   lipid bilayers
D)   micellesE) B) and D)
F) B) and C)

Question 8

The major lipid components of cell membranes are:

Accepted Answer

A)   sphingolipids
B)   fatty acids
C)   phosphoglycerides
D)   terpenoidsE) None of the above
F) B) and C) C

Question 9

Which reagent is used to accelerate coupling reactions in both laboratory peptide synthesis and laboratory DNA synthesis?

Accepted Answer

A)   catalytic H+
B)   dicyclohexylcarbodiimide (DC
C)  
C)   ethyl chloroformate
D)   NaOH
E)   PhS- NH4+F) A) and E)
G) A) and D)

Question 10

Which of the following is a definition of messenger RNA (mRNA) ?

Accepted Answer

A)   RNA found in the ribosome, the site in cells where synthesis of proteins takes place
B)   RNA which carries a specific amino acid to the site of protein synthesis
C)   RNA which has coded genetic information
D)   RNA which signals cell deathE) A) and B)
F) B) and C)

Question 11

Chemically, these are triacylglycerols, triesters of glycerol with three long-chain carboxylic acids.

Accepted Answer

A)   waxes
B)   fats and oils
C)   fatty acids
D)   soapsE) None of the above
F) A) and D)

Question 12

The bond between the nitrogenous base and the sugar in a nucleoside is a glycosidic bond. Which type of reagent should cleave this bond?

Accepted Answer

A)   acid
B)   base
C)   acid or base
D)   neither acid nor base
E)   It depends on which nitrogenous base and which sugar are present.F) A) and C)
G) A) and D)

Question 13

What sequence is fully complementary to the following sequence? (5')  ATCTAGTCA (3')

Accepted Answer

A)   (5')  TAGATCAGT (3') 
B)   (5')  TGACTAGAT (3') 
C)   (5')  ATCTAGTCA (3') 
D)   (5')  ACTGATCTA (3') E) A) and B)
F) None of the above

Question 14

What mRNA sequence is complementary to the following DNA base sequence?
(5') TAAGGCGATA (3')

Accepted Answer

(3') AUUCC...

Question 15

Instructions: Draw the structures of the major organic product(s) you would expect to obtain from reaction of androsterone with the reagents listed below.  androsterone
Draw major product(s):

Accepted Answer

NaBH₄, etha...

Question 16

Which of the following is deoxyadenosine?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) B) and D)
F) A) and D)

Question 17

Draw the structure of calcium oleate. Would this substance be soluble or insoluble in water?

Accepted Answer

insoluble ...

Question 18

Which of the following would be expected to be found in higher concentration in butter versus olive oil?

Accepted Answer

A)   CH3(CH2) 12CO2H
B)   CH3(CH2) 7CHCH(CH2) 7CO2H
C)   CH3(CH2) 4(CHCHCH2) 2(CH2) 6CO2H
D)   CH3(CH2) 4(CHCHCH2) 4(CH2) 2CO2HE) A) and B)
F) A) and C)

Question 19

In humans, most steroids function as:

Accepted Answer

A)   enzymes
B)   hormones
C)   nucleic acids
D)   proteinsE) A) and B)
F) A) and C)

Question 20

A double-stranded DNA molecule that contains 22%, on a mole basis, T must also contain

Accepted Answer

A)   11% G
B)   22% G
C)   28% G
D)   56% G
E)   78% GF) C) and D)
G) None of the above

Exam 16: Biomolecules: Lipids and Nucleic Acids

What sequence of bases on the second strand of DNA is complementary to the following? (5') GCATTA (3')

Correct Answerverified(3') CGTAA...View AnswerShow Answer

Rank DNA, mRNA, and tRNA from largest to smallest.

Correct AnswerverifiedA

Male sex hormones like testosterone are called:

Correct AnswerverifiedShow Answer

Which of the following is 2-deoxy-D-ribose?

Correct AnswerverifiedShow Answer

Draw the structure of glyceryl trimyristate and compare its melting point to that of glyceryl tristearate.

Correct AnswerverifiedMelting point is low...View AnswerShow Answer

Consider the following structure. a) Circle my nucleoside. b) Draw a box around any nurleatide c) Identify as DNA GI RNA.

Correct Answerverified11eaab00_540d_ed7a_a4b8_d9b68cb1f85a_TB4942_00_TB4942_00 b) 11edee41_c2ba_2fd2_a7f4_357e5a84f952_TB4942_00 c) DNA

When soaps disperse in water, the long hydrocarbon tails cluster together in a hydrophobic ball, while the ionic heads on the surface of the cluster stick out into the water. These spherical clusters are called:

Correct AnswerverifiedShow Answer

The major lipid components of cell membranes are:

Correct AnswerverifiedC

Which reagent is used to accelerate coupling reactions in both laboratory peptide synthesis and laboratory DNA synthesis?

Correct AnswerverifiedShow Answer

Which of the following is a definition of messenger RNA (mRNA) ?

Correct AnswerverifiedShow Answer

Chemically, these are triacylglycerols, triesters of glycerol with three long-chain carboxylic acids.

Correct AnswerverifiedShow Answer

The bond between the nitrogenous base and the sugar in a nucleoside is a glycosidic bond. Which type of reagent should cleave this bond?

Correct AnswerverifiedShow Answer

What sequence is fully complementary to the following sequence? (5') ATCTAGTCA (3')

Correct AnswerverifiedShow Answer

What mRNA sequence is complementary to the following DNA base sequence? (5') TAAGGCGATA (3')

Correct Answerverified(3') AUUCC...View AnswerShow Answer

Instructions: Draw the structures of the major organic product(s) you would expect to obtain from reaction of androsterone with the reagents listed below. androsterone Draw major product(s):

Correct AnswerverifiedNaBH4, etha...View AnswerShow Answer

Which of the following is deoxyadenosine?

Correct AnswerverifiedShow Answer

Draw the structure of calcium oleate. Would this substance be soluble or insoluble in water?

Correct Answerverifiedinsoluble ...View AnswerShow Answer

Which of the following would be expected to be found in higher concentration in butter versus olive oil?

Correct AnswerverifiedShow Answer

In humans, most steroids function as:

Correct AnswerverifiedShow Answer

A double-stranded DNA molecule that contains 22%, on a mole basis, T must also contain

Correct AnswerverifiedShow Answer

Correct Answer
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(3') CGTAA...
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A

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Melting point is low...
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11eaab00_540d_ed7a_a4b8_d9b68cb1f85a_TB4942_00_TB4942_00 b) 11edee41_c2ba_2fd2_a7f4_357e5a84f952_TB4942_00 c) DNA

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C

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(3') AUUCC...
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NaBH₄, etha...
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insoluble ...
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