Question 1

Gel electrophoresis generally separates nucleic acids on the basis of

Accepted Answer

A) shape. 
B) sequence. 
C) size. 
D) charge-density. 
E) none of the above 
A) shape. 
B) sequence. 
C) size. 
D) charge-density. 
E) none of the above C

Question 2

Which of the following conclusions about the human genome is false?

Accepted Answer

A) Only about 80% of the genome is transcribed to RNA. 
B) Most of the proteins found in humans are unique to vertebrates. 
C) Nearly half of the human genome consists of repetitive DNA sequences. 
D) The genomes of any two people are likely to be 99.9% identical 
E) None of the above 
A) Only about 80% of the genome is transcribed to RNA. 
B) Most of the proteins found in humans are unique to vertebrates. 
C) Nearly half of the human genome consists of repetitive DNA sequences. 
D) The genomes of any two people are likely to be 99.9% identical 
E) None of the above B

Question 3

Transfer RNA molecules are involved in

Accepted Answer

A) transcription. 
B) translation. 
C) replication. 
D) reverse transcription. 
E) posttranslational processing. 
A) transcription. 
B) translation. 
C) replication. 
D) reverse transcription. 
E) posttranslational processing. B

Question 4

A gene knockout is

Accepted Answer

A) a gene that has been inactivated or removed from an organism. 
B) a dominant gene that knocks-out expression of other genes. 
C) a gene inserted in place of another gene. 
D) a gene present on a YAC. 
E) none of the above 
A) a gene that has been inactivated or removed from an organism. 
B) a dominant gene that knocks-out expression of other genes. 
C) a gene inserted in place of another gene. 
D) a gene present on a YAC. 
E) none of the above

Question 5

Matching
-Plasmids are small, circular DNA molecules that are used in ______.

Accepted Answer

A) diploid 
B) phosphodiester 
C) probe 
D) pyrimidine 
E) introns
F)cloning
G)transformed
H)exons
I)ampicillin
J)autoradiography
K)chain-terminator
L)purine
M)ester 
A) diploid 
B) phosphodiester 
C) probe 
D) pyrimidine 
E) introns
F)cloning
G)transformed
H)exons
I)ampicillin
J)autoradiography
K)chain-terminator
L)purine
M)ester

Question 6

Genomic DNA is ______, resulting in the production of _________.

Accepted Answer

A) transcribed; mRNA 
B) translated; tRNA 
C) transcribed; protein 
D) translated; protein 
E) translated; rRNA 
A) transcribed; mRNA 
B) translated; tRNA 
C) transcribed; protein 
D) translated; protein 
E) translated; rRNA

Question 7

Matching
-Experiments by Avery and colleagues proved that DNA was the substance that _____ a non-pathogenic pneumococcus strain into a virulent strain.

Accepted Answer

A) diploid 
B) phosphodiester 
C) probe 
D) pyrimidine 
E) introns
F)cloning
G)transformed
H)exons
I)ampicillin
J)autoradiography
K)chain-terminator
L)purine
M)ester 
A) diploid 
B) phosphodiester 
C) probe 
D) pyrimidine 
E) introns
F)cloning
G)transformed
H)exons
I)ampicillin
J)autoradiography
K)chain-terminator
L)purine
M)ester

Question 8

Matching
-After hybridization, the fragment of interest can be detected by ______.

Accepted Answer

A) diploid 
B) phosphodiester 
C) probe 
D) pyrimidine 
E) introns
F)cloning
G)transformed
H)exons
I)ampicillin
J)autoradiography
K)chain-terminator
L)purine
M)ester 
A) diploid 
B) phosphodiester 
C) probe 
D) pyrimidine 
E) introns
F)cloning
G)transformed
H)exons
I)ampicillin
J)autoradiography
K)chain-terminator
L)purine
M)ester

Question 9

Which of the following DNA sequences (in which N is any nucleic acid residue)is palindromic?

Accepted Answer

A) ANAGCTT 
B) AANGCTT 
C) AAGNCTT 
D) AAGCNTT 
E) AAGCTNT 
A) ANAGCTT 
B) AANGCTT 
C) AAGNCTT 
D) AAGCNTT 
E) AAGCTNT

Question 10

Recombinant DNA technology can be used for

Accepted Answer

A) constructing mutant proteins. 
B) the industrial production of useful proteins. 
C) producing transgenic organisms. 
D) correcting genetic defects. 
E) all of the above 
A) constructing mutant proteins. 
B) the industrial production of useful proteins. 
C) producing transgenic organisms. 
D) correcting genetic defects. 
E) all of the above

Question 11

RNA occurs primarily as single stranded molecules that can give rise to _______ structures.

Accepted Answer

A) diploid 
B) stem-loop 
C) parallel 
D) tautomeric 
E) haploid 
A) diploid 
B) stem-loop 
C) parallel 
D) tautomeric 
E) haploid

Question 12

Nucleoside triphosphates carry energy in the form of

Accepted Answer

A) glycosidic bonds 
B) phosphoester bonds 
C) phosphoanhydride bonds 
D) hydrogen bonds 
E) amide linkages 
A) glycosidic bonds 
B) phosphoester bonds 
C) phosphoanhydride bonds 
D) hydrogen bonds 
E) amide linkages

Question 13

The production of multiple identical organisms from a single ancestor is called ________.

Accepted Answer

A) DNA ligation 
B) phenotyping 
C) cloning 
D) transcription 
E) sequencing 
A) DNA ligation 
B) phenotyping 
C) cloning 
D) transcription 
E) sequencing

Question 14

Which of the following bases pairs with guanine?

Accepted Answer

A)   
B)   
C)   
D)   
E)   
A)   
B)   
C)   
D)   
E)

Question 15

Nucleotides play a central role in living organisms because

Accepted Answer

A) they mediate transport of energy within the cell. 
B) they are involved in oxidation-reduction reactions. 
C) they are involved in intracellular signaling. 
D) they function as building blocks for nucleic acids. 
E) all of the above 
A) they mediate transport of energy within the cell. 
B) they are involved in oxidation-reduction reactions. 
C) they are involved in intracellular signaling. 
D) they function as building blocks for nucleic acids. 
E) all of the above

Question 16

'AMP' is used to refer to

Accepted Answer

A) adenosine. 
B) adenylic acid. 
C) adenomethyl purine. 
D) adenine. 
E) all of the above 
A) adenosine. 
B) adenylic acid. 
C) adenomethyl purine. 
D) adenine. 
E) all of the above

Question 17

The major carrier of energy in the cell is:

Accepted Answer

A) adenosine monophosphate 
B) adenosine diphosphate 
C) adenosine triphosphate 
D) adenosine tetraphosphate 
E) flavin adenine dinucleotide 
A) adenosine monophosphate 
B) adenosine diphosphate 
C) adenosine triphosphate 
D) adenosine tetraphosphate 
E) flavin adenine dinucleotide

Question 18

It is impossible for RNA to store genetic information, because

Accepted Answer

A) RNA does not base pair and therefore cannot be replicated. 
B) enzymes cannot process genetic information in the form of RNA. 
C) RNA forms complex folded structures. 
D) RNA is very unstable. 
E) None of the above answers is correct; RNA can store genetic information. 
A) RNA does not base pair and therefore cannot be replicated. 
B) enzymes cannot process genetic information in the form of RNA. 
C) RNA forms complex folded structures. 
D) RNA is very unstable. 
E) None of the above answers is correct; RNA can store genetic information.

Question 19

Mutations leading to changes that can be inherited by the next generation have to be introduced into at the _______ level.

Accepted Answer

A) DNA 
B) rRNA 
C) protein 
D) mRNA 
E) tRNA 
A) DNA 
B) rRNA 
C) protein 
D) mRNA 
E) tRNA

Question 20

Double stranded DNA molecules can be cleaved at specific recognition sites by

Accepted Answer

A) RNA polymerase. 
B) DNA ligase. 
C) DNA polymerase. 
D) reverse transcriptase. 
E) Type II restriction endonucleases. 
A) RNA polymerase. 
B) DNA ligase. 
C) DNA polymerase. 
D) reverse transcriptase. 
E) Type II restriction endonucleases.

Exam 3: Nucleotides, Nucleic Acids, and Genetic Information

Gel electrophoresis generally separates nucleic acids on the basis of

Which of the following conclusions about the human genome is false?

Transfer RNA molecules are involved in

A gene knockout is

Matching -Plasmids are small, circular DNA molecules that are used in ______.

Genomic DNA is ______, resulting in the production of _________.

Matching -Experiments by Avery and colleagues proved that DNA was the substance that _____ a non-pathogenic pneumococcus strain into a virulent strain.

Matching -After hybridization, the fragment of interest can be detected by ______.

Which of the following DNA sequences (in which N is any nucleic acid residue)is palindromic?

Recombinant DNA technology can be used for

RNA occurs primarily as single stranded molecules that can give rise to _______ structures.

Nucleoside triphosphates carry energy in the form of

The production of multiple identical organisms from a single ancestor is called ________.

Which of the following bases pairs with guanine?

Nucleotides play a central role in living organisms because

'AMP' is used to refer to

The major carrier of energy in the cell is:

It is impossible for RNA to store genetic information, because

Mutations leading to changes that can be inherited by the next generation have to be introduced into at the _______ level.

Double stranded DNA molecules can be cleaved at specific recognition sites by

Introduction to the Chemistry of Life

Water

Amino Acids

Proteins: Primary Structure

Proteins: Three-Dimensional Structure

Protein Function Part I: Myoglobin and Hemoglobin

Carbohydrates

Lipids and Biological Membranes

Membrane Transport

Enzyme Catalysis

Enzyme Kinetics, Inhibition and Control

Biochemical Signaling

Introduction to Metabolism

Glycogen Metabolism and Gluconeogenesis

Glucose Catabolism

Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Photosynthesis

Lipid Metabolism

Amino Acid Metabolism

Mammalian Fuel Metabolism: Integration and Regulation

Nucleotide Metabolism

Nucleic Acid Structure

Dna Replication, Repair and Recombination

Transcription and Rna Processing

Translation

Regulation of Gene Expression

Filters

Genomic DNA is , resulting in the production of ___.