Question 1

DNA is often damaged or may be replicated incorrectly. Which of the following is not true?

Accepted Answer

A)  Humans do not have DNA repair proteins.
B)  A mutation in the gene for a DNA repair protein may make mutations in other genes more common.
C)  Certain proteins can repair damaged DNA.
D)  The vast majority of DNA damage is fixed.

Question 2

Damaged DNA may be repaired by a special class of

Accepted Answer

A)  nucleotides.
B)  proteins.
C)  deoxyribose molecules.
D)  phosphate bonds.

Question 3

The 220 different cell types in the human body each contain all of the same DNA found in every other cell type.

Accepted Answer

A) True 
 B)False

Question 4

The enzymes involved in ATP synthesis in the mitochondria are likely to be encoded by _____ genes.

Accepted Answer

A)  regulatory
B)  DNA repair
C)  housekeeping
D)  transposon

Question 5

Which of the following is not a base found in DNA?

Accepted Answer

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

Question 6

Where in this diagram of the flow of genetic information of the cell would translation occur?

Accepted Answer

A)  A
B)  B
C)  C
D)  D

Question 7

Most eukaryotic DNA is

Accepted Answer

A)  single-stranded.
B)  noncoding.
C)  regulatory sequences.
D)  prokaryotic.

Question 8

The order of the base pairs in a DNA molecule

Accepted Answer

A)  differs from species to species.
B)  is identical in all organisms.
C)  is identical in organisms of the same species.
D)  differs from cell to cell in a given organism.

Question 9

____________________ DNA consists of stretches of nucleotides that separate genes.

Accepted Answer

The answer of ____________________ DNA consists of stretches of nucleotides...

Question 10

During DNA replication, the template strands of the original DNA molecule are complementary both to each other and to one of the new strands.

Accepted Answer

A) True 
 B)False

Question 11

The sequence of DNA differs among individuals within a species. This is the basis for

Accepted Answer

A)  mutation.
B)  protein structure.
C)  base pairing.
D)  variations in phenotypes.

Question 12

DNA ____________________ results in the copying of a DNA molecule.

Accepted Answer

The answer of DNA ____________________ results in the copying of...

Question 13

The most common way for cells to control gene expression is by controlling

Accepted Answer

A)  translation.
B)  transcription.
C)  spacer DNA frequency.
D)  mutation.

Question 14

Replication of DNA cannot begin until

Accepted Answer

A)  phosphate bonds between nucleotides are broken.
B)  hydrogen bonds between complementary bases are broken.
C)  covalent bonds between sugar molecules are broken.
D)  hydrogen bonds between nucleotides in one strand are broken.

Question 15

Which of the following are removed from mRNA after transcription?

Accepted Answer

A)  introns
B)  transposons
C)  spacer DNA
D)  exons

Question 16

Enzymes proofread base pairing during DNA replication.

Accepted Answer

A) True 
 B)False

Question 17

All cells in an organism contain a full copy of that organism's DNA. Your ears do not produce digestive enzymes because

Accepted Answer

A)  stomach cells have extra DNA.
B)  ear cells have nonfunctional DNA.
C)  some DNA is deleted from cells where it is not needed.
D)  different genes are expressed in different parts of an organism.

Question 18

During replication, each "old" DNA strand serves as a template for a new strand.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is directly involved in the regulation of transcription?

Accepted Answer

A)  ribosomes
B)  tRNA
C)  DNA polymerase
D)  repressor protein

Question 20

Which of the following would not be a required biological property of genetic material?

Accepted Answer

A)  It must be variable.
B)  It must exist in paired copies.
C)  It must be able to be copied accurately.
D)  It must contain the information needed for life.

Exam 14: Dna and Genes

Enzymes proofread base pairing during DNA replication.

Correct AnswerverifiedShow Answer

____________________ DNA consists of stretches of nucleotides that separate genes.

Correct AnswerverifiedShow Answer

Replication of DNA cannot begin until

Correct AnswerverifiedShow Answer

Which of the following are removed from mRNA after transcription?

Correct AnswerverifiedShow Answer

Which of the following is not a base found in DNA?

Correct AnswerverifiedShow Answer

The enzymes involved in ATP synthesis in the mitochondria are likely to be encoded by _____ genes.

Correct AnswerverifiedShow Answer

Most eukaryotic DNA is

Correct AnswerverifiedShow Answer

Where in this diagram of the flow of genetic information of the cell would translation occur?

Correct AnswerverifiedShow Answer

Damaged DNA may be repaired by a special class of

Correct AnswerverifiedShow Answer

During replication, each "old" DNA strand serves as a template for a new strand.

Correct AnswerverifiedShow Answer

Which of the following would not be a required biological property of genetic material?

Correct AnswerverifiedShow Answer

Which of the following is directly involved in the regulation of transcription?

Correct AnswerverifiedShow Answer

DNA is often damaged or may be replicated incorrectly. Which of the following is not true?

Correct AnswerverifiedShow Answer

DNA ____________________ results in the copying of a DNA molecule.

Correct AnswerverifiedShow Answer

The order of the base pairs in a DNA molecule

Correct AnswerverifiedShow Answer

The 220 different cell types in the human body each contain all of the same DNA found in every other cell type.

Correct AnswerverifiedShow Answer

During DNA replication, the template strands of the original DNA molecule are complementary both to each other and to one of the new strands.

Correct AnswerverifiedShow Answer

All cells in an organism contain a full copy of that organism's DNA. Your ears do not produce digestive enzymes because

Correct AnswerverifiedShow Answer

The most common way for cells to control gene expression is by controlling

Correct AnswerverifiedShow Answer

The sequence of DNA differs among individuals within a species. This is the basis for

Correct AnswerverifiedShow Answer

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