Question 1

Which London surgeon noted in 1775 that chimney sweeps exhibited frequent cancer of the scrotum?

Accepted Answer

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

Question 2

The significance of the Griffith,Avery and Hershey-Chase experiments was that they demonstrated that:

Accepted Answer

A)  genes were located on chromosomes
B)  enzymes transformed bacteria
C)  proteins were what genes were composed of
D)  DNA was the molecule of heredity

Question 3

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 4

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 5

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 C

Question 6

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 7

What observation did Dr.Katsusaburo Yamagiwa make to lead him to believe that chemicals cause cancer?

Accepted Answer

A)  He observed that chimney sweeps exhibited frequent cancer of the scrotum.
B)  He observed unusual tumors of the nose in snuff users and suggested tobacco as the cause.
C)  He observed that cancer rates were 40 times higher in smokers than in nonsmokers.
D)  He observed that when coal tar extracts were applied to rabbit skin,cancers eventually developeD.

Question 8

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 A

Question 9

In DNA,the amount of adenine always equals the amount of thymine,and the amount of guanine always equals the amount of cytosine.

Accepted Answer

A) True 
 B)False

Question 10

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 11

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

Accepted Answer

A) True 
 B)False

Question 12

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 13

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 14

The Hershey-Chase experiment demonstrated that RNA,not protein,is the hereditary material.

Accepted Answer

A) True 
 B)False  False

Question 15

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 16

How many carbon atoms does deoxyribose have?

Accepted Answer

A)  4
B)  5
C)  6
D)  7
E)  8

Question 17

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 18

The process when an individual gene moves from one place in the genome to another is called a:

Accepted Answer

A)  transposition
B)  frame shift mutation
C)  transition
D)  base substitution
E)  base deletion

Question 19

The copying of DNA before cell division is referred to as DNA ___________________.

Accepted Answer

replicatio...

Question 20

A base substitution will lead to a frame-shift mutation.

Accepted Answer

A) True 
 B)False

Exam 11: DNA: the Genetic Material

Which London surgeon noted in 1775 that chimney sweeps exhibited frequent cancer of the scrotum?

Correct AnswerverifiedShow Answer

The significance of the Griffith,Avery and Hershey-Chase experiments was that they demonstrated that:

Correct AnswerverifiedShow Answer

All of the following are correct about mutations except:

Correct AnswerverifiedShow Answer

Which choice describes how the DNA molecule replicates?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

What observation did Dr.Katsusaburo Yamagiwa make to lead him to believe that chemicals cause cancer?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedA

In DNA,the amount of adenine always equals the amount of thymine,and the amount of guanine always equals the amount of cytosine.

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

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

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

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

Correct AnswerverifiedShow Answer

The Hershey-Chase experiment demonstrated that RNA,not protein,is the hereditary material.

Correct AnswerverifiedFalse

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

Correct AnswerverifiedShow Answer

How many carbon atoms does deoxyribose have?

Correct AnswerverifiedShow Answer

Which type of mutation will have the most evolutionary consequence?

Correct AnswerverifiedShow Answer

The process when an individual gene moves from one place in the genome to another is called a:

Correct AnswerverifiedShow Answer

The copying of DNA before cell division is referred to as DNA ___________________.

Correct Answerverifiedreplicatio...View AnswerShow Answer

A base substitution will lead to a frame-shift mutation.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
False

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
replicatio...
View Answer

Correct Answer
verified