Question 1

RNA polymerase is primarily responsible for

Accepted Answer

A)   DNA replication.
B)   translation.
C)   transcription.
D)   transformation.
E)   polyadenylation.

Question 2

Which of the following statements regarding eukaryotic transcription is FALSE?

Accepted Answer

A)   Transcription occurs in the nucleus, mitochondria, and chloroplasts (if present) .
B)   Multiple transcription factors are required.
C)   There are four different RNA polymerases.
D)   Multiple elongation factors are required.
E)   A guanine is added to the 3 end, and a poly-A tail is added to the 5 end of the mRNA transcript.

Question 3

Transfer RNA molecules carrying amino acids initially bind to the ribosome at the __________ site. (Be sure to use capital letters.)

Accepted Answer

The answer of Transfer RNA molecules carrying amino acids initially...

Question 4

The ________ of a transfer RNA molecule is complementary to a codon in a messenger RNA molecule.

Accepted Answer

The answer of The ________ of a transfer RNA molecule...

Question 5

Inducible operons

Accepted Answer

A)   are active in the presence of a repressor.
B)   are generally anabolic pathways.
C)   are normally active.
D)   usually require an activator to be transcribed.
E)   usually require a repressor to be transcribed.

Question 6

A codon is a particular combination of three nucleotides. Therefore, there are __________ possible combinations of the nucleotides A, C, G, and T.

Accepted Answer

A)   16
B)   4
C)   12
D)   64
E)   32

Question 7

__________ is initiated at sequences called origins.

Accepted Answer

A)   DNA replication
B)   Translation
C)   Splicing
D)   Transcription
E)   Transposition

Question 8

The most common type of mutation is a point mutation.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following processes is involved in the "central dogma" of genetics?

Accepted Answer

A)   translation
B)   transcription
C)   DNA replication
D)   transcription and translation
E)   DNA replication and translation

Question 10

The process of __________ is initiated with the incorporation of fMet.

Accepted Answer

A)   translation
B)   transcription
C)   capping
D)   DNA replication
E)   light repair

Question 11

A mutation that changes the reading frame of a gene is called a __________ mutation.

Accepted Answer

The answer of A mutation that changes the reading frame...

Question 12

During __________, the growing polymer is located in the P site.

Accepted Answer

A)   polyadenylation
B)   DNA replication
C)   mismatch repair
D)   transcription
E)   translation

Question 13

Compare and contrast the lactose operon with the tryptophan operon.

Accepted Answer

Both the lactose and the tryptophan oper...

Question 14

dATP and dCTP are examples of triphosphate __________, the building blocks of DNA molecules.

Accepted Answer

deoxyribon...

Question 15

Which of the following must be removed from a eukaryotic mRNA molecule before it can be translated?

Accepted Answer

A)   promoter
B)   exon
C)   intron
D)   anticodon
E)   codon

Question 16

Which of the following is NOT involved the packaging of eukaryotic chromosomes?

Accepted Answer

A)   nucleosomes
B)   histones
C)   heterochromatin
D)   euchromatin
E)   Okazaki fragments

Question 17

Which of the following statements concerning transcription in bacteria is FALSE?

Accepted Answer

A)   It occurs in the nucleoid region.
B)   Sigma factors are parts of RNA polymerase that recognize promoter regions.
C)   The same RNA polymerase transcribes primer RNA, mRNA, tRNA, and rRNA.
D)   Termination is either self-induced or due to the presence of Rho protein.
E)   There are a variety of sigma factors that affect transcription.

Question 18

A point mutation can be completely harmless, or it can result in the death of a cell or organism. Explain why these types of mutations can have such varying effects.

Accepted Answer

A point mutation is a single base change...

Question 19

Prokaryotic cells are diploid.

Accepted Answer

A) True 
 B)False

Question 20

Genetic elements known as promoters are initiation points in the process of

Accepted Answer

A)   DNA replication.
B)   transcription.
C)   translation.
D)   mutation repair.
E)   transformation.

Exam 7: Microbial Genetics

Transfer RNA molecules carrying amino acids initially bind to the ribosome at the __________ site. (Be sure to use capital letters.)

Correct AnswerverifiedShow Answer

The most common type of mutation is a point mutation.

Correct AnswerverifiedShow Answer

During __________, the growing polymer is located in the P site.

Correct AnswerverifiedShow Answer

Which of the following statements concerning transcription in bacteria is FALSE?

Correct AnswerverifiedShow Answer

RNA polymerase is primarily responsible for

Correct AnswerverifiedShow Answer

Which of the following statements regarding eukaryotic transcription is FALSE?

Correct AnswerverifiedShow Answer

A codon is a particular combination of three nucleotides. Therefore, there are __________ possible combinations of the nucleotides A, C, G, and T.

Correct AnswerverifiedShow Answer

Which of the following processes is involved in the "central dogma" of genetics?

Correct AnswerverifiedShow Answer

Genetic elements known as promoters are initiation points in the process of

Correct AnswerverifiedShow Answer

The process of __________ is initiated with the incorporation of fMet.

Correct AnswerverifiedShow Answer

Compare and contrast the lactose operon with the tryptophan operon.

Correct AnswerverifiedBoth the lactose and the tryptophan oper...View AnswerShow Answer

Inducible operons

Correct AnswerverifiedShow Answer

A mutation that changes the reading frame of a gene is called a __________ mutation.

Correct AnswerverifiedShow Answer

The ________ of a transfer RNA molecule is complementary to a codon in a messenger RNA molecule.

Correct AnswerverifiedShow Answer

A point mutation can be completely harmless, or it can result in the death of a cell or organism. Explain why these types of mutations can have such varying effects.

Correct AnswerverifiedA point mutation is a single base change...View AnswerShow Answer

Prokaryotic cells are diploid.

Correct AnswerverifiedShow Answer

Which of the following is NOT involved the packaging of eukaryotic chromosomes?

Correct AnswerverifiedShow Answer

Which of the following must be removed from a eukaryotic mRNA molecule before it can be translated?

Correct AnswerverifiedShow Answer

dATP and dCTP are examples of triphosphate __________, the building blocks of DNA molecules.

Correct Answerverifieddeoxyribon...View AnswerShow Answer

__________ is initiated at sequences called origins.

Correct AnswerverifiedShow Answer

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Both the lactose and the tryptophan oper...
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A point mutation is a single base change...
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deoxyribon...
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