Question 1

A primary purpose of genetic engineering is to develop new ways to make protein molecules.

Accepted Answer

A) True 
 B)False

Question 2

Replication of DNA produces two daughter DNA molecules in which

Accepted Answer

A) one daughter molecule contains both parent strands and one daughter molecule contains both newly synthesized strands. 
B) each daughter molecule contains one parent strand and one newly synthesized strand. 
C) each daughter molecule contains two newly synthesized strands. 
D) each daughter molecule contains both parent strands. 
A) one daughter molecule contains both parent strands and one daughter molecule contains both newly synthesized strands. 
B) each daughter molecule contains one parent strand and one newly synthesized strand. 
C) each daughter molecule contains two newly synthesized strands. 
D) each daughter molecule contains both parent strands.

Question 3

Which of the following helps to serve as a site for protein synthesis?

Accepted Answer

A) DNA 
B) rRNA 
C) tRNA 
D) mRNA 
A) DNA 
B) rRNA 
C) tRNA 
D) mRNA

Question 4

The molecular basis of a mutation is most closely linked to a

Accepted Answer

A) defect in the transcription of a genetic message to mRNA. 
B) change in the sequence of bases on a DNA molecule. 
C) defect in the rRNA of ribosomes. 
D) misplaced stop codon. 
A) defect in the transcription of a genetic message to mRNA. 
B) change in the sequence of bases on a DNA molecule. 
C) defect in the rRNA of ribosomes. 
D) misplaced stop codon.

Question 5

The following segment of a nucleic acid could be identified as _____ .

Accepted Answer

A) GCTQ 
B) ATCG 
C) TACG 
D) GCAT 
A) GCTQ 
B) ATCG 
C) TACG 
D) GCAT

Question 6

Cytosine and guanine can form two hydrogen bonds between them.

Accepted Answer

A) True 
 B)False

Question 7

One difference between DNA and RNA is that DNA has two strands, but RNA has only one strand.

Accepted Answer

A) True 
 B)False

Question 8

What is the difference between deoxyribose and ribose?

Accepted Answer

A) Deoxyribose is a d form, whereas ribose does not form either d or l forms. 
B) Deoxyribose has one less oxygen atom than does ribose. 
C) Ribose is found in the straight chain structure, whereas deoxyribose is not. 
D) Ribose is a monosaccharide, but deoxyribose is a polysaccharide. 
A) Deoxyribose is a d form, whereas ribose does not form either d or l forms. 
B) Deoxyribose has one less oxygen atom than does ribose. 
C) Ribose is found in the straight chain structure, whereas deoxyribose is not. 
D) Ribose is a monosaccharide, but deoxyribose is a polysaccharide.

Question 9

Cloning is a semiconservative process with results in an offspring that has half of its genetic material from recombinat DNA research.

Accepted Answer

A) True 
 B)False

Question 10

Only two restriction enzymes have been discovered.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is not a code for chain termination in DNA?

Accepted Answer

A) UAA 
B) UAG 
C) AGU 
D) UGA 
A) UAA 
B) UAG 
C) AGU 
D) UGA

Question 12

What are restriction enzymes?

Accepted Answer

A) Carriers of foreign DNA into a cell that "restrict" the type of DNA introduced into the cell in the recombinant DNA technique. 
B) Protective enzymes found in some bacteria that "restrict" the type of DNA allowed in the bacterial cell by catalyzing the cleaving of other types of DNA. 
C) Circular, double-stranded DNA found in the cytoplasm of bacterial cells that "restrict" the amount of DNA in the bacteria. 
D) DNA of an organism that contains genetic material that comes from another organism and "restricts" the enzymatic activity of the host. 
A) Carriers of foreign DNA into a cell that "restrict" the type of DNA introduced into the cell in the recombinant DNA technique. 
B) Protective enzymes found in some bacteria that "restrict" the type of DNA allowed in the bacterial cell by catalyzing the cleaving of other types of DNA. 
C) Circular, double-stranded DNA found in the cytoplasm of bacterial cells that "restrict" the amount of DNA in the bacteria. 
D) DNA of an organism that contains genetic material that comes from another organism and "restricts" the enzymatic activity of the host.

Question 13

Amino acids are moved from various positions in the cell to the ribosomes due to the information present in the tDNA molecule.

Accepted Answer

A) True 
 B)False

Question 14

Ligases are usually used to cleave DNA molecules in genetic engineering.

Accepted Answer

A) True 
 B)False

Question 15

The following base could be found in both DNA and RNA.

Accepted Answer

A) True 
 B)False

Question 16

​ Which of the following statements is true of a double-helical DNA? ​

Accepted Answer

A) Wherever there is an adenine on one strand of a helix, there must be a guanine on the other strand. 
B) Wherever there is an adenine on one strand of a helix, there must be a thymine on the other strand. 
C) Wherever there is a guanine on one strand of a helix, there must be a thymine on the other strand. 
D) Wherever there is a thymine on one strand of a helix, there must be a cytosine on the other strand. 
A) Wherever there is an adenine on one strand of a helix, there must be a guanine on the other strand. 
B) Wherever there is an adenine on one strand of a helix, there must be a thymine on the other strand. 
C) Wherever there is a guanine on one strand of a helix, there must be a thymine on the other strand. 
D) Wherever there is a thymine on one strand of a helix, there must be a cytosine on the other strand.

Question 17

Two bases in adjacent strands of DNA form two hydrogen bonds.  These two bases would be

Accepted Answer

A) G and C. 
B) A and T. 
C) A and U. 
D) C and T. 
A) G and C. 
B) A and T. 
C) A and U. 
D) C and T.

Question 18

Which of the following bases is found only in DNA?

Accepted Answer

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

Question 19

When the DNA sequence AGGCT is transcribed, the corresponding mRNA sequence, written in 5'-3' order, is _____ .

Accepted Answer

A) TCCGA 
B) UGGCA 
C) AGCCU 
D) UGCCA 
A) TCCGA 
B) UGGCA 
C) AGCCU 
D) UGCCA

Question 20

Which nucleic acid is formed during transcription?

Accepted Answer

A) DNA 
B) rRNA 
C) tRNA 
D) mRNA 
A) DNA 
B) rRNA 
C) tRNA 
D) mRNA

Exam 21: Nucleic Acids and Protein Synthesis

A primary purpose of genetic engineering is to develop new ways to make protein molecules.

Replication of DNA produces two daughter DNA molecules in which

Which of the following helps to serve as a site for protein synthesis?

The molecular basis of a mutation is most closely linked to a

The following segment of a nucleic acid could be identified as _____ .

Cytosine and guanine can form two hydrogen bonds between them.

One difference between DNA and RNA is that DNA has two strands, but RNA has only one strand.

What is the difference between deoxyribose and ribose?

Cloning is a semiconservative process with results in an offspring that has half of its genetic material from recombinat DNA research.

Only two restriction enzymes have been discovered.

Which of the following is not a code for chain termination in DNA?

What are restriction enzymes?

Amino acids are moved from various positions in the cell to the ribosomes due to the information present in the tDNA molecule.

Ligases are usually used to cleave DNA molecules in genetic engineering.

The following base could be found in both DNA and RNA.

​ Which of the following statements is true of a double-helical DNA? ​

Two bases in adjacent strands of DNA form two hydrogen bonds. These two bases would be

Which of the following bases is found only in DNA?

When the DNA sequence AGGCT is transcribed, the corresponding mRNA sequence, written in 5'-3' order, is _____ .

Which nucleic acid is formed during transcription?

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Which of the following statements is true of a double-helical DNA?