Question 1

The human genome is organized into

Accepted Answer

A) 50 compact structures. 
B) 46 compact structures. 
C) 1 Y chromosome and 1 X chromosome. 
D) 23 structures. 
A) 50 compact structures. 
B) 46 compact structures. 
C) 1 Y chromosome and 1 X chromosome. 
D) 23 structures. B

Question 2

An enzyme's active site must contain R groups that
I.complement the shape of the substrate.
II.match the polarity of the substrate.
III.facilitate the bond-breaking of bond-making of the substrate to form the product.
IV.form hydrogen bonds with water.

Accepted Answer

A) I and II 
B) I,II,and IV 
C) I,II,III,and IV 
D) I,II,and III 
A) I and II 
B) I,II,and IV 
C) I,II,III,and IV 
D) I,II,and III D

Question 3

In this type of a representation,the arrow points to what type of unit in the backbone of DNA?

Accepted Answer

A) nitrogenous base 
B) phosphate group 
C) monosaccharide 
D) deoxyribonucleotide 
A) nitrogenous base 
B) phosphate group 
C) monosaccharide 
D) deoxyribonucleotide B

Question 4

Among the goals for developing transgenic plants are to
I.reduce the environmental impacts of intensive and extensive agriculture.
II.give nutritional benefits to the consumer.
III.increase the availability of pharmaceuticals and vaccines.
IV.improve production stability.

Accepted Answer

A) I and III only 
B) II and IV only 
C) I and IV only 
D) I,II,III,and IV 
A) I and III only 
B) II and IV only 
C) I and IV only 
D) I,II,III,and IV

Question 5

Some beneficial uses of recombinant DNA technology include production of insulin for diabetes patients and
I.hepatitis B vaccine.
II.erythropoietin,a protein used to stimulate red blood cell production (for instance in cancer patients treated with chemotherapy).
III.tissue plasminogen activator for dissolving blood clots in cardiac patients.

Accepted Answer

A) I only 
B) II only 
C) III only 
D) I,II,and III 
A) I only 
B) II only 
C) III only 
D) I,II,and III

Question 6

DNA has a backbone that consists of alternating

Accepted Answer

A) base pairs. 
B) sugars and proteins. 
C) phosphates and sugars. 
D) proteins and bases. 
A) base pairs. 
B) sugars and proteins. 
C) phosphates and sugars. 
D) proteins and bases.

Question 7

The ___________ of an enzyme holds a molecule,called the ________,that specifically binds to this site.

Accepted Answer

A) active site;conformation 
B) passive site;conformation 
C) active site;substrate 
D) passive site;substrate 
A) active site;conformation 
B) passive site;conformation 
C) active site;substrate 
D) passive site;substrate

Question 8

Crops developed by transgenic means in the United States and Canada have which attributes?
I.increased shelf life for fruits and vegetables
II.enhanced resistance to pests and viruses
III.increased tolerance to herbicides

Accepted Answer

A) I only 
B) II only 
C) II and III only 
D) I,II,and III 
A) I only 
B) II only 
C) II and III only 
D) I,II,and III

Question 9

The tertiary structure of a protein is the

Accepted Answer

A) overall shape or conformation of the molecule. 
B) intermediate level of molecular organization. 
C) identity and sequence of amino acids present. 
D) association of one protein chain with another. 
A) overall shape or conformation of the molecule. 
B) intermediate level of molecular organization. 
C) identity and sequence of amino acids present. 
D) association of one protein chain with another.

Question 10

X-ray diffraction is a method for

Accepted Answer

A) determining the atomic structure of molecules. 
B) sequencing the primary structure of polymers. 
C) separating cleaved products from a polymer. 
D) dividing the DNA molecule into pieces for analysis. 
A) determining the atomic structure of molecules. 
B) sequencing the primary structure of polymers. 
C) separating cleaved products from a polymer. 
D) dividing the DNA molecule into pieces for analysis.

Question 11

Replication is the process by which copies of _______ are made.

Accepted Answer

A) RNA 
B) protein 
C) DNA 
D) replisomes 
A) RNA 
B) protein 
C) DNA 
D) replisomes

Question 12

The DNA from all humans is identical at the level of ______ percent.

Accepted Answer

A) 90 
B) 95 
C) 99 
D) 99.9 
A) 90 
B) 95 
C) 99 
D) 99.9

Question 13

What forces hold the two strands of DNA together?

Accepted Answer

A) covalent bonds 
B) ionic bonds 
C) salt bridges 
D) hydrogen bonds 
A) covalent bonds 
B) ionic bonds 
C) salt bridges 
D) hydrogen bonds

Question 14

A catalytic effect occurs at

Accepted Answer

A) DNA. 
B) RNA. 
C) substrates. 
D) active sites. 
A) DNA. 
B) RNA. 
C) substrates. 
D) active sites.

Question 15

The carbon to nitrogen bond in a peptide does not freely rotate.What is the best explanation for this?

Accepted Answer

A) It is a single bond. 
B) It is an ionic bond. 
C) It is a partial double bond. 
D) It is a hydrogen bonD. 
A) It is a single bond. 
B) It is an ionic bond. 
C) It is a partial double bond. 
D) It is a hydrogen bonD.

Question 16

How many DNA bases in any one gene have to be changed for a mutation to have a serious effect?

Accepted Answer

A) one 
B) two 
C) five 
D) at least 100 
A) one 
B) two 
C) five 
D) at least 100

Question 17

Plasmids are

Accepted Answer

A) linear pieces of DNA. 
B) linear pieces of RNA. 
C) circular pieces of DNA. 
D) circular pieces of RNA. 
A) linear pieces of DNA. 
B) linear pieces of RNA. 
C) circular pieces of DNA. 
D) circular pieces of RNA.

Question 18

What are the three types of units that must be present in a deoxyribonucleotide used in forming DNA?
I.base
II.deoxyribose
III.ribose
IV.phosphate
V.water

Accepted Answer

A) I,II,and V 
B) I,II,and IV 
C) I,III,and V 
D) I,III,and IV 
A) I,II,and V 
B) I,II,and IV 
C) I,III,and V 
D) I,III,and IV

Question 19

If the thymine (T)content of DNA is 29%,what is the content of guanine (G)?

Accepted Answer

A) 21% 
B) 29% 
C) 58% 
D) 71% 
A) 21% 
B) 29% 
C) 58% 
D) 71%

Question 20

The critical pieces of information that helped Watson and Crick decipher the structure of DNA were
I.Chargaff's rule.
II.the X-ray structure of DNA.
III.anti-Chargaff's rule.
IV.ultraviolet spectrum of DNA.

Accepted Answer

A) I and II only 
B) I and III only 
C) II and III only 
D) I and IV only 
A) I and II only 
B) I and III only 
C) II and III only 
D) I and IV only

The human genome is organized into

An enzyme's active site must contain R groups that I.complement the shape of the substrate. II.match the polarity of the substrate. III.facilitate the bond-breaking of bond-making of the substrate to form the product. IV.form hydrogen bonds with water.

In this type of a representation,the arrow points to what type of unit in the backbone of DNA?

Among the goals for developing transgenic plants are to I.reduce the environmental impacts of intensive and extensive agriculture. II.give nutritional benefits to the consumer. III.increase the availability of pharmaceuticals and vaccines. IV.improve production stability.

DNA has a backbone that consists of alternating

The ___ of an enzyme holds a molecule,called the ,that specifically binds to this site.

Crops developed by transgenic means in the United States and Canada have which attributes? I.increased shelf life for fruits and vegetables II.enhanced resistance to pests and viruses III.increased tolerance to herbicides

The tertiary structure of a protein is the

X-ray diffraction is a method for

Replication is the process by which copies of _______ are made.

The DNA from all humans is identical at the level of ______ percent.

What forces hold the two strands of DNA together?

A catalytic effect occurs at

The carbon to nitrogen bond in a peptide does not freely rotate.What is the best explanation for this?

How many DNA bases in any one gene have to be changed for a mutation to have a serious effect?

Plasmids are

What are the three types of units that must be present in a deoxyribonucleotide used in forming DNA? I.base II.deoxyribose III.ribose IV.phosphate V.water

If the thymine (T)content of DNA is 29%,what is the content of guanine (G)?

The critical pieces of information that helped Watson and Crick decipher the structure of DNA were I.Chargaff's rule. II.the X-ray structure of DNA. III.anti-Chargaff's rule. IV.ultraviolet spectrum of DNA.

The Air We Breathe

Protecting the Ozone Layer

The Chemistry of Global Climate Change

Energy From Combustion

Water for Life

Neutralizing the Threat of Acid Rain

The Fires of Nuclear Fission

Energy From Electron Transfer

The World of Polymers and Plastics

Manipulating Molecules and Designing Drugs

Nutrition: Food for Thought

Filters

Exam 12: Genetic Engineering and the Molecules of Life

The human genome is organized into

An enzyme's active site must contain R groups that I.complement the shape of the substrate. II.match the polarity of the substrate. III.facilitate the bond-breaking of bond-making of the substrate to form the product. IV.form hydrogen bonds with water.

In this type of a representation,the arrow points to what type of unit in the backbone of DNA?

Among the goals for developing transgenic plants are to I.reduce the environmental impacts of intensive and extensive agriculture. II.give nutritional benefits to the consumer. III.increase the availability of pharmaceuticals and vaccines. IV.improve production stability.

DNA has a backbone that consists of alternating

The ___________ of an enzyme holds a molecule,called the ________,that specifically binds to this site.

Crops developed by transgenic means in the United States and Canada have which attributes? I.increased shelf life for fruits and vegetables II.enhanced resistance to pests and viruses III.increased tolerance to herbicides

The tertiary structure of a protein is the

X-ray diffraction is a method for

Replication is the process by which copies of _______ are made.

The DNA from all humans is identical at the level of ______ percent.

What forces hold the two strands of DNA together?

A catalytic effect occurs at

The carbon to nitrogen bond in a peptide does not freely rotate.What is the best explanation for this?

How many DNA bases in any one gene have to be changed for a mutation to have a serious effect?

Plasmids are

What are the three types of units that must be present in a deoxyribonucleotide used in forming DNA? I.base II.deoxyribose III.ribose IV.phosphate V.water

If the thymine (T)content of DNA is 29%,what is the content of guanine (G)?

The critical pieces of information that helped Watson and Crick decipher the structure of DNA were I.Chargaff's rule. II.the X-ray structure of DNA. III.anti-Chargaff's rule. IV.ultraviolet spectrum of DNA.

The Air We Breathe

Protecting the Ozone Layer

The Chemistry of Global Climate Change

Energy From Combustion

Water for Life

Neutralizing the Threat of Acid Rain

The Fires of Nuclear Fission

Energy From Electron Transfer

The World of Polymers and Plastics

Manipulating Molecules and Designing Drugs

Nutrition: Food for Thought

Filters

The ___ of an enzyme holds a molecule,called the ,that specifically binds to this site.