Question 1

How many three-letter combinations are present in the genetic code?

Accepted Answer

A)  32 
B)  64 
C)  16 
D)  88 
A)  32 
B)  64 
C)  16 
D)  88

Question 2

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

Question 3

Transcription and translation of the mRNA molecule in protein synthesis occurs in two different locations.Translation occurs

Accepted Answer

A)  in the nucleus. 
B)  in the cytoplasm. 
C)  in the mitochondria. 
D)  at the cellular membrane. 
A)  in the nucleus. 
B)  in the cytoplasm. 
C)  in the mitochondria. 
D)  at the cellular membrane.

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

Which of the following processes is associated with the flow of genetic information?

Accepted Answer

A)  replication 
B)  transcription 
C)  translation 
D)  More than one answer is correct. 
A)  replication 
B)  transcription 
C)  translation 
D)  More than one answer is correct.

Question 6

Phosphate groups in DNA connect the ____ positions of neighboring sugar units.

Accepted Answer

A)  3' and 5' 
B)  2' and 3' 
C)  1' and 6' 
D)  2' and 5' 
A)  3' and 5' 
B)  2' and 3' 
C)  1' and 6' 
D)  2' and 5'

Question 7

While there is little evidence that nucleic acid supplements provide any health benefit,recent reports provide scientific evident that they might

Accepted Answer

A)  improve memory and mental processing. 
B)  slow the aging process. 
C)  demonstrate anti-cancer properties. 
D)  positively influence the immune system. 
A)  improve memory and mental processing. 
B)  slow the aging process. 
C)  demonstrate anti-cancer properties. 
D)  positively influence the immune system.

Question 8

What is the natural ratio of normal DNA duplication to incorrect DNA duplication due to a mistake and copy?

Accepted Answer

A)  1,000:1 
B)  1,000,000:1 
C)  10,000,000,000:1 
D)  100,000,000,000,000:1 
A)  1,000:1 
B)  1,000,000:1 
C)  10,000,000,000:1 
D)  100,000,000,000,000:1

Question 9

Which nucleic acid carries the codons?

Accepted Answer

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

Question 10

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 11

Adenine is a purine base

Accepted Answer

A) True 
 B)False

Question 12

The base shown below is one of the pyrimidine bases found in nucleic acids.

Accepted Answer

A) True 
 B)False

Question 13

A codon is a sequence of ____ nucleotide bases that represents a code word on mRNA molecules.

Accepted Answer

A)  2 
B)  4 
C)  3 
D)  5 
A)  2 
B)  4 
C)  3 
D)  5

Question 14

Which of the following processes is associated with the production of protein from mRNA?

Accepted Answer

A)  replication 
B)  transcription 
C)  translation 
D)  More than one response is correct. 
A)  replication 
B)  transcription 
C)  translation 
D)  More than one response is correct.

Question 15

What type of bonding holds the two intertwined polynucleotide chains of the DNA double helix together?

Accepted Answer

A)  covalent 
B)  hydrogen 
C)  polar 
D)  ionic 
A)  covalent 
B)  hydrogen 
C)  polar 
D)  ionic

Question 16

Modified plasmids can diffuse into bacterial cells.

Accepted Answer

A) True 
 B)False

Question 17

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 18

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 19

The monomers that are chemically linked together to form nucleic acids are called

Accepted Answer

A)  purine bases. 
B)  sugar-phosphoric residues. 
C)  nucleotides. 
D)  nucleosides. 
A)  purine bases. 
B)  sugar-phosphoric residues. 
C)  nucleotides. 
D)  nucleosides.

Question 20

The bonding forces between two DNA strands in a double helix are

Accepted Answer

A)  peptide linkages. 
B)  phosphate bonds. 
C)  acetal bonds. 
D)  hydrogen bonds. 
A)  peptide linkages. 
B)  phosphate bonds. 
C)  acetal bonds. 
D)  hydrogen bonds.

Exam 21: Nucleic Acids and Protein Synthesis

How many three-letter combinations are present in the genetic code?

Which nucleic acid is formed during transcription?

Transcription and translation of the mRNA molecule in protein synthesis occurs in two different locations.Translation occurs

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

Which of the following processes is associated with the flow of genetic information?

Phosphate groups in DNA connect the ____ positions of neighboring sugar units.

While there is little evidence that nucleic acid supplements provide any health benefit,recent reports provide scientific evident that they might

What is the natural ratio of normal DNA duplication to incorrect DNA duplication due to a mistake and copy?

Which nucleic acid carries the codons?

Replication of DNA produces two daughter DNA molecules in which

Adenine is a purine base

The base shown below is one of the pyrimidine bases found in nucleic acids.

A codon is a sequence of ____ nucleotide bases that represents a code word on mRNA molecules.

Which of the following processes is associated with the production of protein from mRNA?

What type of bonding holds the two intertwined polynucleotide chains of the DNA double helix together?

Modified plasmids can diffuse into bacterial cells.

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

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

The monomers that are chemically linked together to form nucleic acids are called

The bonding forces between two DNA strands in a double helix are

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