Question 1

The base found in DNA, but not RNA, is ____________________; the base found in RNA, but not DNA, is ____________________.

Accepted Answer

The answer of The base found in DNA, but not...

Question 2

The woman scientist who made a major contribution to the discovery of the structure of DNA was _____________________.

Accepted Answer

The answer of The woman scientist who made a major...

Question 3

A ____________________ is made up of a sugar, a phosphate, and a nitrogenous base.

Accepted Answer

The answer of A ____________________ is made up of a...

Question 4

RNA molecules have two definably different ends: a head (the 5') and a tail (the 3'). Do DNA molecules similarly have head and tail ends? Why or why not?

Accepted Answer

Yes, DNA molecules similarly have two di...

Question 5

The name of the enzyme that replicates DNA is ____________________.

Accepted Answer

The answer of The name of the enzyme that replicates...

Question 6

The type of chemical bond that holds together adenine and thymine in the middle of a DNA molecule is a ________________ bond.

Accepted Answer

The answer of The type of chemical bond that holds...

Question 7

The sugar found in DNA is a ____________________.

Accepted Answer

The answer of The sugar found in DNA is a...

Question 8

Describe the chemical composition and structure of DNA.

Accepted Answer

DNA, or deoxyribonucleic acid, is a long...

Question 9

____________________ proteins function in the packaging of DNA in the chromosome.

Accepted Answer

The answer of ____________________ proteins function in the packaging of...

Question 10

The unit structure of chromatin is the ____________________, which is made up of ____________________ types of ____________________ proteins complexed with DNA.

Accepted Answer

nucleosome...

Question 11

To make a DNA vaccine against SARS, what type of genes were used?

Accepted Answer

A)   Human genes
B)   E.coli genes
C)   Chimpanzee genes
D)   SARS viral genes
E)   H1N1 viral genes

Question 12

The disease SARS is spread by ______.

Accepted Answer

A)   skin to skin contact
B)   sexual intercourse
C)   blood infections
D)   sneeze droplets
E)   more than one of these

Question 13

X-ray crystallography revealed several important features of the shape of DNA. Which one of the following facts about DNA was NOT revealed by X-ray crystallography?

Accepted Answer

A)   The shape of the molecule is helical.
B)   The amount of purine bases equals the amount of pyrimidine bases.
C)   The molecule has a constant diameter.
D)   The phosphate groups are located on the outside.
E)   All of these were revealed by X-ray crystallography.

Question 14

Cytosine and thymine are the two types of bases found in DNA known as ______________________.

Accepted Answer

The answer of Cytosine and thymine are the two types...

Question 15

Chromatin is an extraction of pure DNA.

Accepted Answer

A) True 
 B)False

Question 16

What is the percentage of individuals who died after contracting the SARS virus?

Accepted Answer

A)   10
B)   25
C)   50
D)   75
E)   100

Question 17

The basic unit of a DNA molecule is the

Accepted Answer

A)   nitrogenous base.
B)   sugar-phosphate backbone.
C)   amino acid.
D)   nucleotide.
E)   ribose sugar.

Question 18

The type of chemical bond that connects the sugars and phosphates together in a DNA molecule is a _______________ bond.

Accepted Answer

The answer of The type of chemical bond that connects...

Question 19

What is the significance of hydrogen bonds in the shape of biological molecules?

Accepted Answer

A)   They are strong bonds that join the atoms of the molecules to each other.
B)   They are weak bonds that join the atoms of the molecules to each other.
C)   They are weak bonds that play no role in the shape of biological molecules.
D)   They are weak bonds that help determine the shape of many molecules because there are so many of them.
E)   Hydrogen bonds are only of significance in DNA.

Question 20

What is the current status of DNA vaccines?

Accepted Answer

A)   None has been successfully created.
B)   Several have been created but have been found to be ineffective.
C)   Several have shown promise in animal studies and are now in clinical trials.
D)   Several have passed clinical trials and are awaiting government approval.
E)   They are in limited use against a small number of diseases.

Exam 8: DNA Structure and Chromosomal Organization

The woman scientist who made a major contribution to the discovery of the structure of DNA was _____________________.

Correct AnswerverifiedShow Answer

The sugar found in DNA is a ____________________.

Correct AnswerverifiedShow Answer

RNA molecules have two definably different ends: a head (the 5') and a tail (the 3'). Do DNA molecules similarly have head and tail ends? Why or why not?

Correct AnswerAnswered by ExamLex AIYes, DNA molecules similarly have two di...View AnswerShow Answer

The basic unit of a DNA molecule is the

Correct AnswerverifiedShow Answer

What is the current status of DNA vaccines?

Correct AnswerverifiedShow Answer

Describe the chemical composition and structure of DNA.

Correct AnswerAnswered by ExamLex AIDNA, or deoxyribonucleic acid, is a long...View AnswerShow Answer

The disease SARS is spread by ______.

Correct AnswerverifiedShow Answer

What is the percentage of individuals who died after contracting the SARS virus?

Correct AnswerverifiedShow Answer

To make a DNA vaccine against SARS, what type of genes were used?

Correct AnswerverifiedShow Answer

A ____________________ is made up of a sugar, a phosphate, and a nitrogenous base.

Correct AnswerverifiedShow Answer

Cytosine and thymine are the two types of bases found in DNA known as ______________________.

Correct AnswerverifiedShow Answer

X-ray crystallography revealed several important features of the shape of DNA. Which one of the following facts about DNA was NOT revealed by X-ray crystallography?

Correct AnswerverifiedShow Answer

Chromatin is an extraction of pure DNA.

Correct AnswerverifiedShow Answer

The base found in DNA, but not RNA, is ____________________; the base found in RNA, but not DNA, is ____________________.

Correct AnswerverifiedShow Answer

____________________ proteins function in the packaging of DNA in the chromosome.

Correct AnswerverifiedShow Answer

The name of the enzyme that replicates DNA is ____________________.

Correct AnswerverifiedShow Answer

The type of chemical bond that holds together adenine and thymine in the middle of a DNA molecule is a ________________ bond.

Correct AnswerverifiedShow Answer

The type of chemical bond that connects the sugars and phosphates together in a DNA molecule is a _______________ bond.

Correct AnswerverifiedShow Answer

The unit structure of chromatin is the ____________________, which is made up of ____________________ types of ____________________ proteins complexed with DNA.

Correct Answerverifiednucleosome...View AnswerShow Answer

What is the significance of hydrogen bonds in the shape of biological molecules?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Yes, DNA molecules similarly have two di...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
DNA, or deoxyribonucleic acid, is a long...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The base found in DNA, but not RNA, is ; the base found in RNA, but not DNA, is .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The unit structure of chromatin is the , which is made up of types of proteins complexed with DNA.

Correct Answer
verified
nucleosome...
View Answer

Correct Answer
verified