Question 1

A codon is three

Accepted Answer

A)  bases in DNA.
B)  amino acids in a polypeptide.
C)  chemical units in a nucleotide.
D)  sugar in a polysaccharide.E) A) and C)
F) None of the above

Question 2

Select the true statement below.

Accepted Answer

A)  In the United States,genetically engineered crops are still rare
B)  Plants are only genetically engineered to resist viruses or insects
C)  Insects can evolve resistance to GM varieties in lab environments
D)  Farmers typically save GM crop seeds to replant annuallyE) All of the above
F) B) and C)

Question 3

Which is/are concerns about genetically modified food crops? I.GM plants will spread into the wild
II) GM crops threaten the natural balance
III) Use of genetically engineered crops will force pests to evolve
IV) GM crops may stop producing food because of damage to their genes

Accepted Answer

A)  I and II only
B)  I and IV only
C)  I,II,and III only
D)  I,II,III,and IVE) B) and C)
F) All of the above C

Question 4

Which of the following is a true difference between domestic breeding and genetic engineering of plants?

Accepted Answer

A)  Domestic breeding does not cause visible changes in the plant
B)  Domestic breeding does not cause changes to the DNA
C)  Domestic breeding cannot mix genes between different organisms
D)  Domestic breeding will not produce a plant that requires tending by a humanE) A) and B)
F) A) and C)

Question 5

Genetic engineering has been used in Hawaii to protect the papaya crops by

Accepted Answer

A)  making the papaya poisonous to invading insects.
B)  introducing a new strain of papaya that is resistant to fungus growth.
C)  incorporating DNA from the virus to help the plants resist this disease.
D)  incorporating DNA that made the fruit more resistant to rotting after harvest.E) None of the above
F) A) and D)

Question 6

Identify the base sequence that is complementary to the following DNA sequence. TTAAGGCC

Accepted Answer

A)  AATTCCGG
B)  GGCCAATT
C)  AATTGGCC
D)  TTAACCGGE) All of the above
F) None of the above

Question 7

The identity and sequence of the amino acids present in a protein is its

Accepted Answer

A)  primary structure.
B)  secondary structure.
C)  tertiary structure.
D)  quaternary structure.E) All of the above
F) B) and C)

Question 8

DNA has four different nitrogen-containing bases.Which of the following are other structural characteristics of DNA? I.The bases are attached to the phosphate groups
II) The bases are attached to the sugar molecule,deoxyribose
III) The bases A and T are complementary,and C and G are complementary
IV) The bases A and C are complementary,and T and G are complementary

Accepted Answer

A)  I and III
B)  II and III
C)  I and IV
D)  II and IVE) A) and D)
F) C) and D)

Question 9

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

Accepted Answer

A)  One
B)  Two
C)  Five
D)  At least 100E) A) and B)
F) C) and D) A

Question 10

The level of protein structure that involves hydrogen bonding between the atoms of the polypeptide backbone is

Accepted Answer

A)  primary.
B)  secondary.
C)  tertiary.
D)  double helix.E) A) and D)
F) A) and C)

Question 11

The nitrogen-containing bases in DNA are attached by covalent bonds to a

Accepted Answer

A)  sugar.
B)  complementary base.
C)  protein.
D)  phosphate.E) B) and C)
F) C) and D) A

Question 12

DNA must uncoil before replication.

Accepted Answer

A) True 
 B)False

Question 13

Genetic engineered enzymes can make chemical synthesis greener.Which of the following is not an advantage of enzyme-based reactions?

Accepted Answer

A)  Enzymes are reusable
B)  Enzymes are carbon neutral
C)  Enzymes can be designed to handle specific reactions
D)  Enzymes require fewer toxic chemicals than traditional catalystsE) C) and D)
F) None of the above

Question 14

Protein enzymes act as

Accepted Answer

A)  active sites.
B)  catalysts.
C)  substrates.
D)  cells.E) A) and B)
F) B) and C)

Question 15

Today,human insulin for treating diabetes is generated by

Accepted Answer

A)  corn plants.
B)  a strain of yeast.
C)  a strain of bacteria.
D)  lab mice.E) A) and C)
F) All of the above

Question 16

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 IVE) B) and D)
F) A) and D)

Question 17

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.E) A) and C)
F) A) and B)

Question 18

Human insulin protein I.is helpful in the treatment of diabetes in humans.
II) controls the levels of glucose in the blood.
III) can be produced in the bacterium,

Accepted Answer

A)  I and II only
B)  II and III only
C)  I and III only
D)  I,II,and III
E)  coliF) B) and D)
G) C) and D)

Question 19

Only three of the statements below about the nitrogen-containing bases in DNA are true.Select the false statement.

Accepted Answer

A)  All bases are able to make hydrogen bonds
B)  All bases have two rings in their structure
C)  Only some bases have oxygens
D)  Four types of bases are used in DNAE) None of the above
F) B) and D)

Question 20

Side chains of amino acids

Accepted Answer

A)  can be polar or nonpolar.
B)  always contain nitrogen.
C)  react together in condensation polymerization.
D)  interact in secondary,but not tertiary structure.E) A) and D)
F) B) and C)

Exam 13: Genes and Life

A codon is three

Correct Answer
verified

Select the true statement below.

Correct Answer
verified

Which is/are concerns about genetically modified food crops? I.GM plants will spread into the wild II) GM crops threaten the natural balance III) Use of genetically engineered crops will force pests to evolve IV) GM crops may stop producing food because of damage to their genes

Correct Answer
verified
C

Which of the following is a true difference between domestic breeding and genetic engineering of plants?

Correct Answer
verified

Genetic engineering has been used in Hawaii to protect the papaya crops by

Correct Answer
verified

Identify the base sequence that is complementary to the following DNA sequence. TTAAGGCC

Correct Answer
verified

The identity and sequence of the amino acids present in a protein is its

Correct Answer
verified

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

Correct Answer
verified
A

The level of protein structure that involves hydrogen bonding between the atoms of the polypeptide backbone is

Correct Answer
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The nitrogen-containing bases in DNA are attached by covalent bonds to a

Correct Answer
verified
A

DNA must uncoil before replication.

Correct Answer
verified

Genetic engineered enzymes can make chemical synthesis greener.Which of the following is not an advantage of enzyme-based reactions?

Correct Answer
verified

Protein enzymes act as

Correct Answer
verified

Today,human insulin for treating diabetes is generated by

Correct Answer
verified

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

Correct Answer
verified

DNA has a backbone that consists of alternating

Correct Answer
verified

Human insulin protein I.is helpful in the treatment of diabetes in humans. II) controls the levels of glucose in the blood. III) can be produced in the bacterium,

Correct Answer
verified

Only three of the statements below about the nitrogen-containing bases in DNA are true.Select the false statement.

Correct Answer
verified

Side chains of amino acids

Correct Answer
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Exam 13: Genes and Life

A codon is three

Correct AnswerverifiedShow Answer

Select the true statement below.

Correct AnswerverifiedShow Answer

Which is/are concerns about genetically modified food crops? I.GM plants will spread into the wild II) GM crops threaten the natural balance III) Use of genetically engineered crops will force pests to evolve IV) GM crops may stop producing food because of damage to their genes

Correct AnswerverifiedC

Which of the following is a true difference between domestic breeding and genetic engineering of plants?

Correct AnswerverifiedShow Answer

Genetic engineering has been used in Hawaii to protect the papaya crops by

Correct AnswerverifiedShow Answer

Identify the base sequence that is complementary to the following DNA sequence. TTAAGGCC

Correct AnswerverifiedShow Answer

The identity and sequence of the amino acids present in a protein is its

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedA

The level of protein structure that involves hydrogen bonding between the atoms of the polypeptide backbone is

Correct AnswerverifiedShow Answer

The nitrogen-containing bases in DNA are attached by covalent bonds to a

Correct AnswerverifiedA

DNA must uncoil before replication.

Correct AnswerverifiedShow Answer

Genetic engineered enzymes can make chemical synthesis greener.Which of the following is not an advantage of enzyme-based reactions?

Correct AnswerverifiedShow Answer

Protein enzymes act as

Correct AnswerverifiedShow Answer

Today,human insulin for treating diabetes is generated by

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

DNA has a backbone that consists of alternating

Correct AnswerverifiedShow Answer

Human insulin protein I.is helpful in the treatment of diabetes in humans. II) controls the levels of glucose in the blood. III) can be produced in the bacterium,

Correct AnswerverifiedShow Answer

Only three of the statements below about the nitrogen-containing bases in DNA are true.Select the false statement.

Correct AnswerverifiedShow Answer

Side chains of amino acids

Correct AnswerverifiedShow Answer

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C

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A

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A

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