Question 1

Nucleic acid is found

Accepted Answer

A)  only in animal cells. 
B)  only in plant cells. 
C)  in all living cells. 
D)  only in carbohydrates. 
A)  only in animal cells. 
B)  only in plant cells. 
C)  in all living cells. 
D)  only in carbohydrates.

Question 2

Which of the following is NOT a characteristic of genetic material?

Accepted Answer

A)  It has the ability to replicate itself. 
B)  It is capable of storing the information needed to synthesize proteins. 
C)  It may mutate (change) and accommodate new situations. 
D)  It is metabolized as the chief source of cellular energy. 
A)  It has the ability to replicate itself. 
B)  It is capable of storing the information needed to synthesize proteins. 
C)  It may mutate (change) and accommodate new situations. 
D)  It is metabolized as the chief source of cellular energy.

Question 3

Which one of the following does NOT apply to RNA?

Accepted Answer

A)  It is a single strand. 
B)  It contains the base uracil. 
C)  The sugar is deoxyribose. 
D)  It is involved in translation and transcription. 
A)  It is a single strand. 
B)  It contains the base uracil. 
C)  The sugar is deoxyribose. 
D)  It is involved in translation and transcription.

Question 4

If the mRNA sequence is C, G, and U, the matching tRNA sequence will be

Accepted Answer

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

Question 5

In translation, a cytosine in tRNA pairs opposite

Accepted Answer

A)  uracil. 
B)  guanine. 
C)  thymine. 
D)  adenine. 
A)  uracil. 
B)  guanine. 
C)  thymine. 
D)  adenine.

Question 6

This occurs when insertions or deletions cause the ribosome to read the wrong sets of three nucleotides.

Accepted Answer

A)  point mutation 
B)  frameshift 
C)  translocation 
D)  transcription 
A)  point mutation 
B)  frameshift 
C)  translocation 
D)  transcription

Question 7

You are given the chemical code of one-half of a DNA double helix: CATGATTACCTAGAATCCTGTAAT. Which of the following sequences represents the codons and anticodons that would be used in creating a protein if the other half of the DNA strand is the coding strand?

Accepted Answer

A)  mRNA codons: CATGATTACCTAGAATCCTGTAAT tRNA anticodons: CATGATTACCTAGAATCCTGTAAT 
B)  mRNA codons: CAUGAUUACCUAGAAUCCUGUAAU tRNA anticodons: GUACUAAUGGAUCUUAGGACAUUA 
C)  mRNA codons: CATGATTACCTAGAATCCTGTAAT tRNA anticodons: CAUGAUUACCUAGAAUCCUGUAAU 
D)  mRNA codons: GUACUAAUGGAUCUUAGGACAUUA tRNA anticodons: CAUGAUUACCUAGAAUCCUGUAAU 
A)  mRNA codons: CATGATTACCTAGAATCCTGTAAT tRNA anticodons: CATGATTACCTAGAATCCTGTAAT 
B)  mRNA codons: CAUGAUUACCUAGAAUCCUGUAAU tRNA anticodons: GUACUAAUGGAUCUUAGGACAUUA 
C)  mRNA codons: CATGATTACCTAGAATCCTGTAAT tRNA anticodons: CAUGAUUACCUAGAAUCCUGUAAU 
D)  mRNA codons: GUACUAAUGGAUCUUAGGACAUUA tRNA anticodons: CAUGAUUACCUAGAAUCCUGUAAU

Question 8

This kind of mutation causes a ribosome to stop protein syntheses by introducing a stop codon too early.

Accepted Answer

A)  missence 
B)  nonsense 
C)  point 
D)  All of these answers are true. 
A)  missence 
B)  nonsense 
C)  point 
D)  All of these answers are true.

Question 9

A codon contains ____ nucleotides.

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
A)  one 
B)  two 
C)  three 
D)  four

Question 10

Which of the following does NOT follow the base pairing rule?

Accepted Answer

A)  A with T 
B)  G with C 
C)  U with D 
D)  U with A 
A)  A with T 
B)  G with C 
C)  U with D 
D)  U with A

Question 11

In the process of DNA replication, adenine will pair with

Accepted Answer

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

Question 12

When only one nucleotide base is involved in a mutation, this is called

Accepted Answer

A)  chromosomal mutation. 
B)  template error. 
C)  point mutation. 
D)  nonsense codon. 
A)  chromosomal mutation. 
B)  template error. 
C)  point mutation. 
D)  nonsense codon.

Question 13

____ represents the transfer RNA bases that correspond to DNA gene segment GCCAATGCT.

Accepted Answer

A)  CGGUUACGA 
B)  CGGTTACGA 
C)  GCCAATGCT 
D)  GCCAAUGCU 
A)  CGGUUACGA 
B)  CGGTTACGA 
C)  GCCAATGCT 
D)  GCCAAUGCU

Question 14

____ represents the mRNA that will be produced from DNA gene segment GCCAATGCT.

Accepted Answer

A)  CGGUUACGA 
B)  CGGTTACGA 
C)  GCCAATGCT 
D)  GCCAAUGCU 
A)  CGGUUACGA 
B)  CGGTTACGA 
C)  GCCAATGCT 
D)  GCCAAUGCU

Question 15

In transcription, the base thymine in DNA will pair opposite the base ____ in mRNA.

Accepted Answer

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

Question 16

Both a base and a phosphate are attached ____ in a nucleotide.

Accepted Answer

A)  to each other 
B)  to a sugar 
C)  to each other and to a sugar 
D)  None of these answers is true because phosphate is not part of a nucleotide. 
A)  to each other 
B)  to a sugar 
C)  to each other and to a sugar 
D)  None of these answers is true because phosphate is not part of a nucleotide.

Question 17

"Bubbles" along a strand of DNA indicate that

Accepted Answer

A)  DNA replication is occurring. 
B)  RNA synthesis is taking place. 
C)  transcription is occurring. 
D)  All of these are possible. 
A)  DNA replication is occurring. 
B)  RNA synthesis is taking place. 
C)  transcription is occurring. 
D)  All of these are possible.

Question 18

The process of translation can be broken down into three basic steps. Which of the following is NOT one of these?

Accepted Answer

A)  initiation 
B)  elongation 
C)  translocation 
D)  termination 
A)  initiation 
B)  elongation 
C)  translocation 
D)  termination

Question 19

If the codon AUC codes for the placement of the amino acid isoleucine, and GGU codes for the placement of glycine, which of these sequences codes for glycine-isoleucine-isoleucine-glycine?

Accepted Answer

A)  AUCGGUUGGCUA 
B)  GGUAUCCUAUGG 
C)  GGUAUCGGUAUC 
D)  GGUAUCAUCGGU 
A)  AUCGGUUGGCUA 
B)  GGUAUCCUAUGG 
C)  GGUAUCGGUAUC 
D)  GGUAUCAUCGGU

Question 20

If a drug interferes with the function of ribosomes, which of the following is likely to occur?

Accepted Answer

A)  DNA will not be able to make copies of itself. 
B)  Proteins will not be produced. 
C)  Mutations will occur to the DNA. 
D)  Messenger RNA will not be manufactured. 
A)  DNA will not be able to make copies of itself. 
B)  Proteins will not be produced. 
C)  Mutations will occur to the DNA. 
D)  Messenger RNA will not be manufactured.

Exam 8: DNA and RNA: The Molecular Basis of Heredity

Nucleic acid is found

Which of the following is NOT a characteristic of genetic material?

Which one of the following does NOT apply to RNA?

If the mRNA sequence is C, G, and U, the matching tRNA sequence will be

In translation, a cytosine in tRNA pairs opposite

This occurs when insertions or deletions cause the ribosome to read the wrong sets of three nucleotides.

You are given the chemical code of one-half of a DNA double helix: CATGATTACCTAGAATCCTGTAAT. Which of the following sequences represents the codons and anticodons that would be used in creating a protein if the other half of the DNA strand is the coding strand?

This kind of mutation causes a ribosome to stop protein syntheses by introducing a stop codon too early.

A codon contains ____ nucleotides.

Which of the following does NOT follow the base pairing rule?

In the process of DNA replication, adenine will pair with

When only one nucleotide base is involved in a mutation, this is called

____ represents the transfer RNA bases that correspond to DNA gene segment GCCAATGCT.

____ represents the mRNA that will be produced from DNA gene segment GCCAATGCT.

In transcription, the base thymine in DNA will pair opposite the base ____ in mRNA.

Both a base and a phosphate are attached ____ in a nucleotide.

"Bubbles" along a strand of DNA indicate that

The process of translation can be broken down into three basic steps. Which of the following is NOT one of these?

If the codon AUC codes for the placement of the amino acid isoleucine, and GGU codes for the placement of glycine, which of these sequences codes for glycine-isoleucine-isoleucine-glycine?

If a drug interferes with the function of ribosomes, which of the following is likely to occur?

What Is Biology

The Basics of Life: Chemistry

Organic Molecules: The Molecules of Life

Cell Structure and Function

Enzymes, Coenzymes, and Energy

Biochemical Pathways: Cellular Respiration

Biochemical Pathways: Photosynthesis

Cell Division: Proliferation and Reproduction

Patterns of Inheritance

Applications of Biotechnology

Diversity Within Species and Population Genetics

Evolution and Natural Selection

The Formation of Species and Evolutionary Change

Ecosystem Dynamics: The Flow of Energy and Matter

Community Interactions

Population Ecology

Evolutionary and Ecological Aspects of Behavior

The Origin of Life and the Evolution of Cells

The Classification and Evolution of Organisms

The Nature of Microorganisms

The Plant Kingdom

The Animal Kingdom

Materials Exchange in the Body

Nutrition: Food and Diet

The Bodys Control Mechanisms and Immunity

Human Reproduction, Sex, and Sexuality

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