Question 1

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 2

DNA molecules are in the form of a double helix with the two strands running parallel and in the same direction.

Accepted Answer

A) True 
 B)False

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

Movement of a ribosome along a mRNA is termed _____ .

Accepted Answer

A) translocation 
B) lateration 
C) elongation 
D) translation 
A) translocation 
B) lateration 
C) elongation 
D) translation

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

Each amino acid in a protein synthesis is specified by only one codon in the genetic code.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following statements about DNA profiling is false?

Accepted Answer

A) The percent of differences in DNA between people is great (99.9%). 
B) Small DNA samples can be used through a process called PCR. 
C) Everyone has different DNA,except identical twins. 
D) DNA can be extracted from almost any biological sample. 
A) The percent of differences in DNA between people is great (99.9%). 
B) Small DNA samples can be used through a process called PCR. 
C) Everyone has different DNA,except identical twins. 
D) DNA can be extracted from almost any biological sample.

Question 8

Codons provide the information needed to synthesize which of the following?

Accepted Answer

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

Question 9

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 10

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 11

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 12

An RNA chain being synthesized grows in the ____ direction.

Accepted Answer

A) 5'$\rightarrow$3' 
B) 3$\rightarrow$5' 
C) either direction 
D) none of the choices 
A) 5'$\rightarrow$3' 
B) 3$\rightarrow$5' 
C) either direction 
D) none of the choices

Question 13

The DNA molecule is significantly smaller than the RNA 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

Viruses infect cells by

Accepted Answer

A) embedding in cell membranes. 
B) immediate destruction of cells. 
C) injecting their nucleic acid into cells. 
D) withdrawing cellular contents. 
A) embedding in cell membranes. 
B) immediate destruction of cells. 
C) injecting their nucleic acid into cells. 
D) withdrawing cellular contents.

Question 16

Chemicals which cause mutations are called _____ .

Accepted Answer

A) mutagens 
B) mutations 
C) genetic inhibitors 
D) genetic modifiers 
A) mutagens 
B) mutations 
C) genetic inhibitors 
D) genetic modifiers

Question 17

With recombinant DNA work,a type of DNA has been used as a means of introducing a new gene into bacteria.Shown below,this type of DNA is referred to as a(n)_____.

Accepted Answer

A) plasmid 
B) vector 
C) DNA polymerase 
D) intron 
A) plasmid 
B) vector 
C) DNA polymerase 
D) intron

Question 18

The process by which an exact copy of a DNA molecule is produced is _____ .

Accepted Answer

A) recombination 
B) translocation 
C) transcription 
D) replication 
A) recombination 
B) translocation 
C) transcription 
D) replication

Question 19

Which of the following bases would be found in both DNA and RNA?

Accepted Answer

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

Question 20

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

Exam 21: Nucleic Acids and Protein Synthesis

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

DNA molecules are in the form of a double helix with the two strands running parallel and in the same direction.

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

Movement of a ribosome along a mRNA is termed _____ .

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

Each amino acid in a protein synthesis is specified by only one codon in the genetic code.

Which of the following statements about DNA profiling is false?

Codons provide the information needed to synthesize which of the following?

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

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

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

An RNA chain being synthesized grows in the ____ direction.

The DNA molecule is significantly smaller than the RNA molecule.

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

Viruses infect cells by

Chemicals which cause mutations are called _____ .

With recombinant DNA work,a type of DNA has been used as a means of introducing a new gene into bacteria.Shown below,this type of DNA is referred to as a(n)_____.

The process by which an exact copy of a DNA molecule is produced is _____ .

Which of the following bases would be found in both DNA and RNA?

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

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