Question 1

The enzyme helicase seperartes the two DNA strands.

Accepted Answer

A) True 
 B)False

Question 2

The two strands of the double helix of DNA are held together by

Accepted Answer

A) hydrogen bonds. 
B) covalent bonds. 
C) dipole-dipole interactions. 
D) ionic bonds. 
E) sugar-to-phosphate bonds. 
A) hydrogen bonds. 
B) covalent bonds. 
C) dipole-dipole interactions. 
D) ionic bonds. 
E) sugar-to-phosphate bonds.

Question 3

DNA fingerprinting uses ________ to produce DNA fragments that can be separated and screened for the presence of genetic diseases.

Accepted Answer

A) extracellular DNA 
B) restriction enzymes 
C) bacterial plasmids 
D) anticodons 
E) codons 
A) extracellular DNA 
B) restriction enzymes 
C) bacterial plasmids 
D) anticodons 
E) codons

Question 4

When mRNA is synthesized using the information from DNA, the process is called

Accepted Answer

A) transportation. 
B) transposition. 
C) transcription. 
D) translation. 
E) transliteration. 
A) transportation. 
B) transposition. 
C) transcription. 
D) translation. 
E) transliteration.

Question 5

A DNA template having the base sequence 3' A-G-A-T-G-A 5' would produce a mRNA with a base sequence of

Accepted Answer

A) 5' A-G-A-T-G-A 3'. 
B) 5' U-C-U-A-C-U 3'. 
C) 5' T-C-T-U-C-T 3'. 
D) 5' T-C-T-A-C-A 3'. 
E) 5' A-C-A-U-C-A 3'. 
A) 5' A-G-A-T-G-A 3'. 
B) 5' U-C-U-A-C-U 3'. 
C) 5' T-C-T-U-C-T 3'. 
D) 5' T-C-T-A-C-A 3'. 
E) 5' A-C-A-U-C-A 3'.

Question 6

The insertion of new DNA into the plasmid DNA of a bacterium produces

Accepted Answer

A) viral DNA. 
B) DNA fingerprints. 
C) recombinant DNA. 
D) ribosomes. 
E) restriction enzymes. 
A) viral DNA. 
B) DNA fingerprints. 
C) recombinant DNA. 
D) ribosomes. 
E) restriction enzymes.

Question 7

DNA differs from RNA in the sugar it contains.

Accepted Answer

A) True 
 B)False

Question 8

A tRNA is activated when it

Accepted Answer

A) attaches to mRNA. 
B) attaches to its specific amino acid. 
C) attaches to the ribosome. 
D) leaves the ribosome. 
E) releases its specific amino acid. 
A) attaches to mRNA. 
B) attaches to its specific amino acid. 
C) attaches to the ribosome. 
D) leaves the ribosome. 
E) releases its specific amino acid.

Question 9

Some sections of a DNA molecule do not code for protein synthesis. These segments are called

Accepted Answer

A) codons. 
B) anticodons. 
C) Okazaki fragments. 
D) introns. 
E) exons. 
A) codons. 
B) anticodons. 
C) Okazaki fragments. 
D) introns. 
E) exons.

Question 10

The result of a defective enzyme caused by a mutation in the DNA nucleotide sequence is

Accepted Answer

A) a genetic disease. 
B) AIDS. 
C) HIV. 
D) recombinant DNA. 
E) translocation. 
A) a genetic disease. 
B) AIDS. 
C) HIV. 
D) recombinant DNA. 
E) translocation.

Question 11

Mutations are the result of

Accepted Answer

A) alterations in the phosphate of the DNA backbone. 
B) exposure to water in utero. 
C) physical trauma in the mother's childhood. 
D) alterations in the sugar component of the DNA backbone. 
E) alterations in the DNA base sequence. 
A) alterations in the phosphate of the DNA backbone. 
B) exposure to water in utero. 
C) physical trauma in the mother's childhood. 
D) alterations in the sugar component of the DNA backbone. 
E) alterations in the DNA base sequence.

Question 12

In the DNA double helix, a purine can only bond with a pyrimidine.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is a section of mRNA produced from the DNA template below? 3' A-A-G-C-G-A-A 5'

Accepted Answer

A) 5' A-T-A-G-C-T-A 3' 
B) 5' A-U-A-G-C-U-A 3' 
C) 5' U-A-U-C-G-A-U 3' 
D) 5' U-U-U-G-C-U-U 3' 
E) 5' T-A-T-C-G-A-T 3' 
A) 5' A-T-A-G-C-T-A 3' 
B) 5' A-U-A-G-C-U-A 3' 
C) 5' U-A-U-C-G-A-U 3' 
D) 5' U-U-U-G-C-U-U 3' 
E) 5' T-A-T-C-G-A-T 3'

Question 14

When DNA duplicates itself, the correct placement of the nucleotides is accomplished by

Accepted Answer

A) complementary base pairing. 
B) polymerase. 
C) enzyme matching. 
D) base matching. 
E) transcription. 
A) complementary base pairing. 
B) polymerase. 
C) enzyme matching. 
D) base matching. 
E) transcription.

Question 15

DNA fingerprinting is not yet used to detect genes for cancer susceptibility.

Accepted Answer

A) True 
 B)False

Question 16

The sequence of bases in a nucleic acid is the primary structure.

Accepted Answer

A) True 
 B)False

Question 17

The base sequence of the strand of DNA complementary to the segment 5' T-G-G-C-A-A-C 3' is

Accepted Answer

A) 3' T-G-G-C-A-A-C 5'. 
B) 3' A-C-C-G-T-T-G 5'. 
C) 3' A-C-C-G-U-U-G 5'. 
D) 3' U-C-C-G-T-T-G 5'. 
E) 3' A-C-G-C-T-U-G 5'. 
A) 3' T-G-G-C-A-A-C 5'. 
B) 3' A-C-C-G-T-T-G 5'. 
C) 3' A-C-C-G-U-U-G 5'. 
D) 3' U-C-C-G-T-T-G 5'. 
E) 3' A-C-G-C-T-U-G 5'.

Question 18

RNA contains no phosphate.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is used in the preparation of recombinant DNA?

Accepted Answer

A) RNA polymerase 
B) DNA polymerase 
C) repressor protein 
D) restriction enzyme 
E) enzyme induction 
A) RNA polymerase 
B) DNA polymerase 
C) repressor protein 
D) restriction enzyme 
E) enzyme induction

Question 20

Which of the following is found in RNA but not in DNA?

Accepted Answer

A) thymine 
B) uracil 
C) guanine 
D) cytosine 
E) deoxyribose 
A) thymine 
B) uracil 
C) guanine 
D) cytosine 
E) deoxyribose

Exam 21: Nucleic Acids and Protein Synthesis

The enzyme helicase seperartes the two DNA strands.

The two strands of the double helix of DNA are held together by

DNA fingerprinting uses ________ to produce DNA fragments that can be separated and screened for the presence of genetic diseases.

When mRNA is synthesized using the information from DNA, the process is called

A DNA template having the base sequence 3' A-G-A-T-G-A 5' would produce a mRNA with a base sequence of

The insertion of new DNA into the plasmid DNA of a bacterium produces

DNA differs from RNA in the sugar it contains.

A tRNA is activated when it

Some sections of a DNA molecule do not code for protein synthesis. These segments are called

The result of a defective enzyme caused by a mutation in the DNA nucleotide sequence is

Mutations are the result of

In the DNA double helix, a purine can only bond with a pyrimidine.

Which of the following is a section of mRNA produced from the DNA template below? 3' A-A-G-C-G-A-A 5'

When DNA duplicates itself, the correct placement of the nucleotides is accomplished by

DNA fingerprinting is not yet used to detect genes for cancer susceptibility.

The sequence of bases in a nucleic acid is the primary structure.

The base sequence of the strand of DNA complementary to the segment 5' T-G-G-C-A-A-C 3' is

RNA contains no phosphate.

Which of the following is used in the preparation of recombinant DNA?

Which of the following is found in RNA but not in DNA?

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