Question 1

The two strands of DNA are said to be __________ to one another.

Accepted Answer

The answer of The two strands of DNA are said...

Question 2

Hershey and Chase tagged the DNA of viruses with radioactive phosphorus,and their protein coats with radioactive sulfur.When the viruses were allowed to infect bacteria,what did the viruses transfer to the bacteria?

Accepted Answer

A)  Radioactive phosphorus and sulfur
B)  Radioactive sulfur
C)  Radioactive phosphorus
D)  Neither radioactive phosphorus nor sulfur

Question 3

Which researcher in 1761 noted unusual tumors of the nose in snuff users and suggested tobacco as the cause?

Accepted Answer

A)  Katsusaburo Yamagiwa
B)  John Hill
C)  Sir Percivall Pott
D)  Ernst Winder
E)  Richard Doll

Question 4

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

Accepted Answer

Deletions or insertions of nucleotides l...

Question 5

If one strand of a DNA molecule has the base sequence ATTGCAT,its complementary strand will have the sequence:

Accepted Answer

A)  ATTGCAT
B)  TAACGTA
C)  GCCATGC
D)  CGGTACG

Question 6

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 7

DNA is also known as the:

Accepted Answer

A)  alpha helix
B)  beta helix
C)  double helix
D)  triple helix

Question 8

In the Griffith experiment,why did the mice become ill when injected with a mixture of dead S bacteria and live,capsuleless R bacteria?

Accepted Answer

A)  RNA was passed from the live R bacteria to the dead S bacteria,bringing them back to life.
B)  RNA was passed from the dead virulent S bacteria to the live nonvirulent R bacteria.
C)  DNA was passed from the dead virulent S bacteria to the live nonvirulent R bacteria.
D)  Protein was passed from the dead virulent S bacteria to the live nonvirulent R bacteria.
E)  The virulent S bacteria were not 100% dead and so were still able to make the mice ill.

Question 9

In his experiments,Griffith found that transformation occurs naturally in bacteria.Explain how Griffith found this out.

Accepted Answer

Griffith found that the gene for a polys...

Question 10

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 11

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 12

When Frederick Griffith injected dead bacteria of the virulent S strain into mice,the mice:

Accepted Answer

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

Question 13

What is meant by "semiconservative replication?"

Accepted Answer

When molecules of DNA are replicated,the...

Question 14

When Frederick Griffith infected mice with a virulent strain of Streptococcus pneumoniae,the mice:

Accepted Answer

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

Question 15

When Griffith injected a mixture of dead S bacteria and live,capsuleless R bacteria,the mice:

Accepted Answer

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

Question 16

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.

Question 17

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 18

Each strand in the double helix is identical to the opposite strand.

Accepted Answer

A) True 
 B)False

Question 19

The building blocks of DNA are called:

Accepted Answer

A)  proteins
B)  bases
C)  nucleotides
D)  acids

Question 20

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

Exam 11: DNA: the Genetic Material

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

Correct AnswerverifiedShow Answer

The two strands of DNA are said to be __________ to one another.

Correct AnswerverifiedShow Answer

What is meant by "semiconservative replication?"

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

Meselson and Stahl proved that:

Correct AnswerverifiedShow Answer

DNA is also known as the:

Correct AnswerverifiedShow Answer

Which scientists determined that DNA synthesis is semiconservative?

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

In his experiments,Griffith found that transformation occurs naturally in bacteria.Explain how Griffith found this out.

Correct AnswerverifiedGriffith found that the gene for a polys...View AnswerShow Answer

When Griffith injected a mixture of dead S bacteria and live,capsuleless R bacteria,the mice:

Correct AnswerverifiedShow Answer

Hershey and Chase tagged the DNA of viruses with radioactive phosphorus,and their protein coats with radioactive sulfur.When the viruses were allowed to infect bacteria,what did the viruses transfer to the bacteria?

Correct AnswerverifiedShow Answer

All of the following are correct about DNA replication except:

Correct AnswerverifiedShow Answer

Which researcher in 1761 noted unusual tumors of the nose in snuff users and suggested tobacco as the cause?

Correct AnswerverifiedShow Answer

If one strand of a DNA molecule has the base sequence ATTGCAT,its complementary strand will have the sequence:

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

Each strand in the double helix is identical to the opposite strand.

Correct AnswerverifiedShow Answer

The building blocks of DNA are called:

Correct AnswerverifiedShow Answer

When Frederick Griffith injected dead bacteria of the virulent S strain into mice,the mice:

Correct AnswerverifiedShow Answer

When Frederick Griffith infected mice with a virulent strain of Streptococcus pneumoniae,the mice:

Correct AnswerverifiedShow Answer

Which is correct about DNA replication?

Correct AnswerverifiedShow Answer

In the Griffith experiment,why did the mice become ill when injected with a mixture of dead S bacteria and live,capsuleless R bacteria?

Correct AnswerverifiedShow Answer

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
Griffith found that the gene for a polys...
View Answer

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified