Question 1

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 2

Which of the following drugs should a mother avoid while pregnant?

Accepted Answer

A) ethanol 
B) opiates 
C) testosterone 
D) all the choices 
A) ethanol 
B) opiates 
C) testosterone 
D) all the choices

Question 3

While the nitrogen base uracil is only found in RNA,ribose is found in both DNA and RNA.

Accepted Answer

A) True 
 B)False

Question 4

What do restriction enzymes do?

Accepted Answer

A) restrict enzyme activity 
B) regulate the type of DNA allowed into a bacterial cell 
C) catalyze the manufacture of DNA 
D) limit enzyme growth 
A) restrict enzyme activity 
B) regulate the type of DNA allowed into a bacterial cell 
C) catalyze the manufacture of DNA 
D) limit enzyme growth

Question 5

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.

Question 6

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 7

Which of the following comprise a nucleic acid backbone?

Accepted Answer

A) sugar and base units 
B) phosphate and base units 
C) phosphate and sugar units 
D) sugar,phosphate and base units 
A) sugar and base units 
B) phosphate and base units 
C) phosphate and sugar units 
D) sugar,phosphate and base units

Question 8

Which of the following correctly describes the segment of the nucleic acid shown?

Accepted Answer

A) This is a segment of DNA. 
B) It has a 3' $\rightarrow$5' phosphodiester linkage. 
C) The sugar involved is deoxyribose. 
D) All of the responses are correct. 
A) This is a segment of DNA. 
B) It has a 3' $\rightarrow$5' phosphodiester linkage. 
C) The sugar involved is deoxyribose. 
D) All of the responses are correct.

Question 9

The tRNA anticodon and amino acid that correspond to the mRNA codon GUC are CAG and alanine,respectively.

Accepted Answer

A) True 
 B)False

Question 10

Only two restriction enzymes have been discovered.

Accepted Answer

A) True 
 B)False

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

Which of the following drugs should a mother avoid while pregnant?

While the nitrogen base uracil is only found in RNA,ribose is found in both DNA and RNA.

What do restriction enzymes do?

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

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

Which of the following comprise a nucleic acid backbone?

Which of the following correctly describes the segment of the nucleic acid shown?

The tRNA anticodon and amino acid that correspond to the mRNA codon GUC are CAG and alanine,respectively.

Only two restriction enzymes have been discovered.

Matter, measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids, bases, and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

Exam 21: Nucleic Acids and Protein Synthesis

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

Which of the following drugs should a mother avoid while pregnant?

While the nitrogen base uracil is only found in RNA,ribose is found in both DNA and RNA.

What do restriction enzymes do?

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

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

Which of the following comprise a nucleic acid backbone?

Which of the following correctly describes the segment of the nucleic acid shown?

The tRNA anticodon and amino acid that correspond to the mRNA codon GUC are CAG and alanine,respectively.

Only two restriction enzymes have been discovered.

Matter, measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids, bases, and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters