Question 1

Transcription

Accepted Answer

A)  involves both strands of DNA as templates. 
B)  uses the enzyme DNA polymerase. 
C)  results in a double-stranded end product. 
D)  results in a single-stranded end product. 
E)  result sin two single-stranded products. 
A)  involves both strands of DNA as templates. 
B)  uses the enzyme DNA polymerase. 
C)  results in a double-stranded end product. 
D)  results in a single-stranded end product. 
E)  result sin two single-stranded products.

Question 2

Selecting the Exception Four of the five answers listed below are bases used to construct nucleic acids. Select the exception.

Accepted Answer

A)  cytosine 
B)  adenine 
C)  thymine 
D)  guanine 
E)  phenylalanine 
A)  cytosine 
B)  adenine 
C)  thymine 
D)  guanine 
E)  phenylalanine

Question 3

The genetic code is made up of units (codons), each of which consists of how many nucleotides?

Accepted Answer

A)  2 
B)  3 
C)  5 
D)  6 
E)  12 
A)  2 
B)  3 
C)  5 
D)  6 
E)  12

Question 4

A thymine dimer affects the DNA molecule by

Accepted Answer

A)  breaking it apart. 
B)  distorting its structure. 
C)  preventing effective DNA repair. 
D)  interfering with base pairing. 
E)  both b and c. 
A)  breaking it apart. 
B)  distorting its structure. 
C)  preventing effective DNA repair. 
D)  interfering with base pairing. 
E)  both b and c.

Question 5

Which statement is true?

Accepted Answer

A)  The hydrogen bonding of cytosine to guanine is an example of complementary base pairing. 
B)  Adenine always pairs up with guanine in DNA, and cytosine always teams up with thymine. 
C)  Each of the four nucleotides in a DNA molecule has the same nitrogen-containing base. 
D)  When adenine base pairs with thymine, they are linked by three hydrogen bonds. 
E)  In the DNA of all species, the amount of cytosine never equals the amount of guanine. 
A)  The hydrogen bonding of cytosine to guanine is an example of complementary base pairing. 
B)  Adenine always pairs up with guanine in DNA, and cytosine always teams up with thymine. 
C)  Each of the four nucleotides in a DNA molecule has the same nitrogen-containing base. 
D)  When adenine base pairs with thymine, they are linked by three hydrogen bonds. 
E)  In the DNA of all species, the amount of cytosine never equals the amount of guanine.

Question 6

Selecting the Exception Four of the five answers listed below are aspects of the process known as gene splicing. Select the exception.

Accepted Answer

A)  cloning vector 
B)  restriction enzymes 
C)  sticky ends 
D)  exposed base pairs 
E)  crossing over 
A)  cloning vector 
B)  restriction enzymes 
C)  sticky ends 
D)  exposed base pairs 
E)  crossing over

Question 7

A gene mutation

Accepted Answer

A)  is a change in the nucleotide sequence of DNA. 
B)  may be caused by environmental agents. 
C)  may arise spontaneously. 
D)  can occur in all organisms. 
E)  all of these 
A)  is a change in the nucleotide sequence of DNA. 
B)  may be caused by environmental agents. 
C)  may arise spontaneously. 
D)  can occur in all organisms. 
E)  all of these

Question 8

Figure C represents

Accepted Answer

A)  translocation. 
B)  deletion. 
C)  base substitution. 
D)  duplication. 
E)  inversion. 
A)  translocation. 
B)  deletion. 
C)  base substitution. 
D)  duplication. 
E)  inversion.

Question 9

Recombinant DNA

Accepted Answer

A)  is crucial in genetic engineering. 
B)  can be produced with new biological techniques. 
C)  uses restriction enzymes for its creation. 
D)  relies on bacterial plasmids. 
E)  all of these 
A)  is crucial in genetic engineering. 
B)  can be produced with new biological techniques. 
C)  uses restriction enzymes for its creation. 
D)  relies on bacterial plasmids. 
E)  all of these

Question 10

In what stage of translation does the peptide bond join two amino acids?

Accepted Answer

A)  initiation 
B)  transcription 
C)  elongation 
D)  reparation 
E)  termination 
A)  initiation 
B)  transcription 
C)  elongation 
D)  reparation 
E)  termination

Question 11

There are how many different kinds of RNA codons?

Accepted Answer

A)  3 
B)  12 
C)  28 
D)  64 
E)  120 
A)  3 
B)  12 
C)  28 
D)  64 
E)  120

Question 12

More than 60 disorders have been mapped to chromosome

Accepted Answer

A)  14. 
B)  21. 
C)  18. 
D)  12. 
E)  5. 
A)  14. 
B)  21. 
C)  18. 
D)  12. 
E)  5.

Question 13

Figure B represents

Accepted Answer

A)  translocation. 
B)  deletion. 
C)  base substitution. 
D)  duplication. 
E)  inversion. 
A)  translocation. 
B)  deletion. 
C)  base substitution. 
D)  duplication. 
E)  inversion.

Question 14

PCR uses a special DNA polymerase that

Accepted Answer

A)  resists low temperatures. 
B)  resists acids. 
C)  resists bases. 
D)  resists high temperatures. 
E)  resists centrifugation. 
A)  resists low temperatures. 
B)  resists acids. 
C)  resists bases. 
D)  resists high temperatures. 
E)  resists centrifugation.

Question 15

Ribosomes function as

Accepted Answer

A)  1 unit. 
B)  2-part units. 
C)  3-part units. 
D)  4-part units. 
E)  a multidivisional unit. 
A)  1 unit. 
B)  2-part units. 
C)  3-part units. 
D)  4-part units. 
E)  a multidivisional unit.

Question 16

Which process employs exposing cells cultured in the laboratory to DNA with a gene of interest?

Accepted Answer

A)  transformation 
B)  transfection 
C)  DNA fingerprinting 
D)  polymerase chain reaction 
E)  gel electrophoresis 
A)  transformation 
B)  transfection 
C)  DNA fingerprinting 
D)  polymerase chain reaction 
E)  gel electrophoresis

Question 17

Each DNA strand has a "backbone" that consists of alternating

Accepted Answer

A)  amino acid units. 
B)  nitrogen-containing bases. 
C)  hydrogen bonds. 
D)  sugar and phosphate units. 
E)  amines and purines. 
A)  amino acid units. 
B)  nitrogen-containing bases. 
C)  hydrogen bonds. 
D)  sugar and phosphate units. 
E)  amines and purines.

Question 18

In the bonding of nitrogenous bases

Accepted Answer

A)  adenine is paired with cytosine. 
B)  adenine is paired with guanine. 
C)  cytosine is paired with thymine. 
D)  guanine is paired with cytosine. 
E)  cytosine is paired with uracil. 
A)  adenine is paired with cytosine. 
B)  adenine is paired with guanine. 
C)  cytosine is paired with thymine. 
D)  guanine is paired with cytosine. 
E)  cytosine is paired with uracil.

Question 19

Match between columns
                        Premises: This is a nuclease whose only natural function is to cut apart foreign DNA entering a cell.
This catalyzes reactions to construct DNA strands from mRNA.
Bacterial plasmids into which foreign DNA has been spliced.

Accepted Answer

The Answer of reverse transcriptase and a restriction enzyme and is...

Question 20

All the DNA in a haploid set of a species' chromosomes is called a

Accepted Answer

A)  DNA clone. 
B)  plasmid. 
C)  primer. 
D)  genome. 
E)  restriction site. 
A)  DNA clone. 
B)  plasmid. 
C)  primer. 
D)  genome. 
E)  restriction site.

Exam 21: DNA, Genes, and Biotechnology

Transcription

Selecting the Exception Four of the five answers listed below are bases used to construct nucleic acids. Select the exception.

The genetic code is made up of units (codons), each of which consists of how many nucleotides?

A thymine dimer affects the DNA molecule by

Which statement is true?

Selecting the Exception Four of the five answers listed below are aspects of the process known as gene splicing. Select the exception.

A gene mutation

Figure C represents

Recombinant DNA

In what stage of translation does the peptide bond join two amino acids?

There are how many different kinds of RNA codons?

More than 60 disorders have been mapped to chromosome

Figure B represents

PCR uses a special DNA polymerase that

Ribosomes function as

Which process employs exposing cells cultured in the laboratory to DNA with a gene of interest?

Each DNA strand has a "backbone" that consists of alternating

In the bonding of nitrogenous bases

All the DNA in a haploid set of a species' chromosomes is called a

Learning About Human Biology

Chemistry of Life

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

Human Impacts on the Biosphere

Filters