Question 1

The place where the parent DNA molecule becomes unzipped for replication is called the ___________________.

Accepted Answer

The answer of The place where the parent DNA molecule...

Question 2

Meselson and Stahl proved that:

Accepted Answer

A)   DNA is the genetic material
B)   DNA is made from nucleotides
C)   DNA replicates in a semiconservative manner
D)   DNA contains nitrogen

Question 3

Which scientists determined that DNA synthesis is semiconservative?

Accepted Answer

A)   Rosalind Franklin
B)   Martha Chase and Frederick Griffith
C)   James Watson and Francis Crick
D)   Matthew Meselson and Franklin Stahl
E)   Rachel Carson and Oswald Avery

Question 4

The enzyme that joins the ends of newly synthesized segments of DNA after the primers have been removed is:

Accepted Answer

A)   DNA ligase
B)   DNA polymerase
C)   helicase
D)   primase
E)   RNA ligase

Question 5

A plant species has its DNA analyzed.The results show that 28% of its nitrogen bases are guanine.What is the percent represented by thymine?

Accepted Answer

A)   28%
B)   24%
C)   23%
D)   22%

Question 6

Which scientist's work first suggested that DNA had the shape of a helix?

Accepted Answer

A)   Rosalind Franklin
B)   James Watson
C)   Martha Chase
D)   Francis Crick
E)   Rachel Carson

Question 7

All of the following are correct about mutations except:

Accepted Answer

A)   Without mutations,there would be no variation and no evolution.
B)   Mutations change the bases in DNA.
C)   A mutation in a somatic cell will be passed on to subsequent generations.
D)   Some mutations change the nucleotide sequence of a gene.
E)   Some mutations remove nucleotides from a gene.

Question 8

Biochemist Erwin Chargaff found that in DNA there was a special relationship between individual bases that we now refer to as Chargaff's rule.His observation was that:

Accepted Answer

A)   A = T and G = C
B)   C = T and A = G
C)   A + T = C + G
D)   G = T and C = A

Question 9

When Frederick Griffith infected mice with S.pneumoniae that lacked a capsule,the mice:

Accepted Answer

A)   remained healthy
B)   died of blood poisoning
C)   became ill but lived
D)   reproduced quicker

Question 10

An unexpected change in a cell's genetic makeup is called a ____________.

Accepted Answer

The answer of An unexpected change in a cell's genetic...

Question 11

If the sequence of one strand of DNA is CATTACGGG,then the complementary strand would be GTAATGCCC.

Accepted Answer

A) True 
 B)False

Question 12

What is meant by "semiconservative replication?"

Accepted Answer

When molecules of DNA are replicated,the...

Question 13

Which is correct about DNA replication?

Accepted Answer

A)   The strand made continuously is the lagging strand.
B)   DNA polymerase adds nucleotides in the 3' to 5' direction.
C)   DNA polymerase can build DNA from scratch.
D)   The place where the parent DNA becomes unzipped during DNA replication is called the replication fork.
E)   DNA is made conservatively.

Question 14

Which scientists are credited for deducing the true structure of DNA?

Accepted Answer

A)   Rosalind Franklin
B)   Martha Chase and Frederick Griffith
C)   James Watson and Francis Crick
D)   Rachel Carson and Oswald Avery

Question 15

Which choice describes how the DNA molecule replicates?

Accepted Answer

A)   Semiconservative
B)   Dispersive
C)   Conservative
D)   Either dispersive or semiconservative depending on the pH
E)   Either dispersive or conservative depending on the organism

Question 16

Based on which of the following pieces of evidence about the transforming agent did Avery conclude that DNA is the hereditary material?

Accepted Answer

A)   The purified material had the same elements as DNA.
B)   In an ultracentrifuge,the material migrated like DNA.
C)   The material was not destroyed by protein-digesting enzymes.
D)   The material was destroyed by DNA-digesting enzymes.
E)   All of the choices are correct.

Question 17

Why are deletions or insertions of nucleotides likely to be more detrimental than base substitutions?

Accepted Answer

Deletions or insertions of nucleotides l...

Question 18

Once a mistake is made in DNA it will stay there forever.

Accepted Answer

A) True 
 B)False

Question 19

Which type of mutation will have the most evolutionary consequence?

Accepted Answer

A)   A mutation in a lung cell
B)   A mutation in a kidney cell
C)   A mutation in a stomach cell
D)   A mutation in a germ-line cell

Question 20

All of the following are correct about DNA replication except:

Accepted Answer

A)   DNA polymerase is the enzyme that adds nucleotides to one another.
B)   DNA polymerase can only synthesize DNA in the 5' to 3' direction.
C)   Helicase is the enzyme which rewinds the DNA after replication is finished.
D)   DNA polymerase can only add nucleotides to an existing strand.
E)   The lagging strand only has many primers.

Exam 11: DNA: The Genetic Material

The place where the parent DNA molecule becomes unzipped for replication is called the ___________________.

Correct AnswerverifiedShow Answer

Once a mistake is made in DNA it will stay there forever.

Correct AnswerverifiedShow Answer

Based on which of the following pieces of evidence about the transforming agent did Avery conclude that DNA is the hereditary material?

Correct AnswerverifiedShow Answer

An unexpected change in a cell's genetic makeup is called a ____________.

Correct AnswerverifiedShow Answer

Which scientist's work first suggested that DNA had the shape of a helix?

Correct AnswerverifiedShow Answer

All of the following are correct about DNA replication except:

Correct AnswerverifiedShow Answer

What is meant by "semiconservative replication?"

Correct AnswerverifiedWhen molecules of DNA are replicated,the...View AnswerShow Answer

All of the following are correct about mutations except:

Correct AnswerverifiedShow Answer

Biochemist Erwin Chargaff found that in DNA there was a special relationship between individual bases that we now refer to as Chargaff's rule.His observation was that:

Correct AnswerverifiedShow Answer

The enzyme that joins the ends of newly synthesized segments of DNA after the primers have been removed is:

Correct AnswerverifiedShow Answer

A plant species has its DNA analyzed.The results show that 28% of its nitrogen bases are guanine.What is the percent represented by thymine?

Correct AnswerverifiedShow Answer

Which scientists are credited for deducing the true structure of DNA?

Correct AnswerverifiedShow Answer

Which is correct about DNA replication?

Correct AnswerverifiedShow Answer

When Frederick Griffith infected mice with S.pneumoniae that lacked a capsule,the mice:

Correct AnswerverifiedShow Answer

Meselson and Stahl proved that:

Correct AnswerverifiedShow Answer

Which choice describes how the DNA molecule replicates?

Correct AnswerverifiedShow Answer

Which type of mutation will have the most evolutionary consequence?

Correct AnswerverifiedShow Answer

Which scientists determined that DNA synthesis is semiconservative?

Correct AnswerverifiedShow Answer

Why are deletions or insertions of nucleotides likely to be more detrimental than base substitutions?

Correct AnswerverifiedDeletions or insertions of nucleotides l...View AnswerShow Answer

If the sequence of one strand of DNA is CATTACGGG,then the complementary strand would be GTAATGCCC.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
When molecules of DNA are replicated,the...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Deletions or insertions of nucleotides l...
View Answer

Correct Answer
verified