Question 1

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 2

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 3

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 4

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 5

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 6

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 7

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 8

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

Accepted Answer

nucleosome...

Question 9

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 10

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 11

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

Accepted Answer

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

Question 12

Describe the chemical composition and structure of DNA.

Accepted Answer

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

Question 13

The sugar found in DNA is a ____________________.

Accepted Answer

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

Question 14

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 15

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 16

Chromatin is an extraction of pure DNA.

Accepted Answer

A) True 
 B)False

Question 17

The name of the enzyme that replicates DNA is ____________________.

Accepted Answer

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

Question 18

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 19

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.

Question 20

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...

Exam 8: DNA Structure and Chromosomal Organization

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

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

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

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Chromatin is an extraction of pure DNA.

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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?

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

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

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

Correct Answerverifiednucleosome...View AnswerShow Answer

The sugar found in DNA is a ____________________.

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

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The disease SARS is spread by ______.

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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

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

Correct AnswerverifiedShow Answer

What is the current status of DNA vaccines?

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 ______________________.

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The name of the enzyme that replicates DNA is ____________________.

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

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Describe the chemical composition and structure of DNA.

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

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

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nucleosome...
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Answered by ExamLex AI
Yes, DNA molecules similarly have two di...
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The base found in DNA, but not RNA, is ; the base found in RNA, but not DNA, is .

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