Question 1

The stage of viral replication in which the viral nucleic acid is released inside the cell is

Accepted Answer

A)  penetration. 
B)  release. 
C)  attachment. 
D)  synthesis. 
E)  assembly. 
A)  penetration. 
B)  release. 
C)  attachment. 
D)  synthesis. 
E)  assembly.

Question 2

A group of genes,a promoter,and an operator that control transcription are called a(n)

Accepted Answer

A)  translational unit. 
B)  chromosome. 
C)  ribosome. 
D)  envelope. 
E)  operon. 
A)  translational unit. 
B)  chromosome. 
C)  ribosome. 
D)  envelope. 
E)  operon.

Question 3

The amino acid that starts every protein and that is encoded by ACG is methionine.

Accepted Answer

A) True 
 B)False

Question 4

A change in a cell's DNA sequence is

Accepted Answer

A)  replication. 
B)  transcription. 
C)  a mutation. 
D)  translation. 
E)  an operon. 
A)  replication. 
B)  transcription. 
C)  a mutation. 
D)  translation. 
E)  an operon.

Question 5

Antibiotic resistance enhances the reproductive success of bacteria that have it.

Accepted Answer

A) True 
 B)False

Question 6

Most antibiotics are not effective against viruses because they ________ and this does not affect the activity of viruses.

Accepted Answer

A)  inhibit synthesis of cell walls 
B)  destroy DNA and RNA 
C)  inhibit all protein synthesis 
D)  target envelopes 
E)  inhibit reverse transcriptase 
A)  inhibit synthesis of cell walls 
B)  destroy DNA and RNA 
C)  inhibit all protein synthesis 
D)  target envelopes 
E)  inhibit reverse transcriptase

Question 7

You are sorting labels for a diagram about viral replication,and you find a part of the diagram that says: "the stage of viral replication in which viral components are put together to form new viruses," you would look for a label referring to

Accepted Answer

A)  release. 
B)  assembly. 
C)  attachment. 
D)  penetration. 
E)  synthesis. 
A)  release. 
B)  assembly. 
C)  attachment. 
D)  penetration. 
E)  synthesis.

Question 8

A DNA sequence that signals the start of a gene is

Accepted Answer

A)  a codon. 
B)  an anticodon. 
C)  a terminator. 
D)  a promoter. 
E)  an amino acid attachment site. 
A)  a codon. 
B)  an anticodon. 
C)  a terminator. 
D)  a promoter. 
E)  an amino acid attachment site.

Question 9

The step of translation in which an mRNA,a small ribosomal subunit,and the initiator tRNA are aligned together is

Accepted Answer

A)  initiation. 
B)  mitosis. 
C)  elongation. 
D)  termination. 
E)  transcription. 
A)  initiation. 
B)  mitosis. 
C)  elongation. 
D)  termination. 
E)  transcription.

Question 10

Why would it take more energy to separate DNA with the sequence GCGCGCGC and its complementary strand than the sequence ATATATAT and its complementary strand?

Accepted Answer

A)  A's and T's do not form pairs between separate DNA strands. 
B)  The helix is wound more tightly in G and C base pairs. 
C)  G and C base pairs form more hydrogen bonds between DNA strands. 
D)  The sequence containing G's and C's is longer. 
E)  G and C base pairs form more covalent bonds between DNA strands. 
A)  A's and T's do not form pairs between separate DNA strands. 
B)  The helix is wound more tightly in G and C base pairs. 
C)  G and C base pairs form more hydrogen bonds between DNA strands. 
D)  The sequence containing G's and C's is longer. 
E)  G and C base pairs form more covalent bonds between DNA strands.

Question 11

RNA processing involves splicing.

Accepted Answer

A) True 
 B)False

Question 12

Mutations produce new alleles that may

Accepted Answer

A)  be beneficial to the organism's fitness. 
B)  have no effect on the organism's fitness. 
C)  decrease the organism's fitness. 
D)  increase diversity at a genetic locus. 
E)  All answers are correct. 
A)  be beneficial to the organism's fitness. 
B)  have no effect on the organism's fitness. 
C)  decrease the organism's fitness. 
D)  increase diversity at a genetic locus. 
E)  All answers are correct.

Question 13

What did scientists discover was the primary cause for a genetically controlled language disorder in humans?

Accepted Answer

A)  The cause was one mutation in a single gene on one chromosome. 
B)  The disorder was not inherited but related to diet. 
C)  Affected family members were lacking vocal chords. 
D)  The cause was multiple mutations in multiple genes on one chromosome. 
E)  The cause was multiple mutations in multiple genes on many chromosomes. 
A)  The cause was one mutation in a single gene on one chromosome. 
B)  The disorder was not inherited but related to diet. 
C)  Affected family members were lacking vocal chords. 
D)  The cause was multiple mutations in multiple genes on one chromosome. 
E)  The cause was multiple mutations in multiple genes on many chromosomes.

Question 14

If you were looking at an electron micrograph of a mRNA molecule being translated by many ribosomes at once,you would be looking at a picture from a prokaryote.

Accepted Answer

A) True 
 B)False

Question 15

The step of translation in which amino acids are added to the growing polypeptide is

Accepted Answer

A)  mitosis. 
B)  initiation. 
C)  elongation. 
D)  termination. 
E)  transcription. 
A)  mitosis. 
B)  initiation. 
C)  elongation. 
D)  termination. 
E)  transcription.

Exam 7: DNA Structure and Gene Function

The stage of viral replication in which the viral nucleic acid is released inside the cell is

A group of genes,a promoter,and an operator that control transcription are called a(n)

The amino acid that starts every protein and that is encoded by ACG is methionine.

A change in a cell's DNA sequence is

Antibiotic resistance enhances the reproductive success of bacteria that have it.

Most antibiotics are not effective against viruses because they ________ and this does not affect the activity of viruses.

You are sorting labels for a diagram about viral replication,and you find a part of the diagram that says: "the stage of viral replication in which viral components are put together to form new viruses," you would look for a label referring to

A DNA sequence that signals the start of a gene is

The step of translation in which an mRNA,a small ribosomal subunit,and the initiator tRNA are aligned together is

Why would it take more energy to separate DNA with the sequence GCGCGCGC and its complementary strand than the sequence ATATATAT and its complementary strand?

RNA processing involves splicing.

Mutations produce new alleles that may

What did scientists discover was the primary cause for a genetically controlled language disorder in humans?

If you were looking at an electron micrograph of a mRNA molecule being translated by many ribosomes at once,you would be looking at a picture from a prokaryote.

The step of translation in which amino acids are added to the growing polypeptide is

The Scientific Study of Life

The Chemistry of Life

Cells

The Energy of Life

Photosynthesis

Respiration and Fermentation

DNA Replication,Binary Fission,and Mitosis

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Populations

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

The Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

The Digestive and Urinary Systems

The Immune System

Animal Reproduction and Development

Filters