Question 1

Which of the following is incorrect about termination codons?

Accepted Answer

A)  are also called nonsense codons
B)  where the bond between the final tRNA and the polymerase is broken
C)  include AUG
D)  include UAA,UAG,and UGA
E)  do not have corresponding tRNAF) B) and D)
G) C) and D)

Question 2

All of the following pertain to transcription except

Accepted Answer

A)  occurs on a ribosome in the cytoplasm.
B)  occurs before translation.
C)  requires RNA polymerase.
D)  requires a template DNA strand.
E)  a process used in the synthesis of protein.F) A) and B)
G) A) and C)

Question 3

Induced mutations result from errors in DNA replication.

Accepted Answer

A) True 
 B)False

Question 4

The process in which mutations are removed and the correct bases added is called

Accepted Answer

A)  transduction.
B)  excision repair.
C)  frameshift.
D)  back-mutation.
E)  transformation.F) None of the above
G) A) and D)

Question 5

Excised introns form structures called lariats.

Accepted Answer

A) True 
 B)False

Question 6

Okazaki fragments are attached to the growing end of the lagging strand by

Accepted Answer

A)  DNA ligase.
B)  DNA polymerase.
C)  DNA helicase.
D)  DNA gyrase.
E)  primase.F) B) and D)
G) A) and C)

Question 7

A mutation that changes a normal codon to a stop codon is called a ___ mutation.

Accepted Answer

A)  point
B)  silent
C)  back
D)  missense
E)  nonsenseF) A) and B)
G) B) and C)

Question 8

DNA photolyase,in the presence of visible light,can repair DNA damage due to ultraviolet radiation.

Accepted Answer

A) True 
 B)False

Question 9

The operon segment composed of the gene that codes for a protein repressor is called the

Accepted Answer

A)  operator.
B)  structural locus.
C)  regulator.
D)  promoter.E) B) and C)
F) A) and D)

Question 10

The DNA of an organism is made up of subunits called

Accepted Answer

A)  histones.
B)  amino acids.
C)  nucleotides.
D)  mRNA.
E)  polymerases.F) B) and D)
G) A) and B)

Question 11

Bacterial conjugation involves

Accepted Answer

A)  bacteriophage carrying donor DNA to the recipient cell.
B)  a donor cell with a plasmid that synthesizes a pilus.
C)  naked DNA fragments from a lysed donor cell taken up by a recipient cell.
D)  new progeny cells with genes from two parent bacterial cells.E) None of the above
F) All of the above

Exam 9: Microbial Genetics

Bacterial conjugation involves

Correct Answer
verified

DNA photolyase,in the presence of visible light,can repair DNA damage due to ultraviolet radiation.

Correct Answer
verified

The process in which mutations are removed and the correct bases added is called

Correct Answer
verified

All of the following pertain to transcription except

Correct Answer
verified

A mutation that changes a normal codon to a stop codon is called a ___ mutation.

Correct Answer
verified

The operon segment composed of the gene that codes for a protein repressor is called the

Correct Answer
verified

Okazaki fragments are attached to the growing end of the lagging strand by

Correct Answer
verified

The DNA of an organism is made up of subunits called

Correct Answer
verified

Excised introns form structures called lariats.

Correct Answer
verified

Induced mutations result from errors in DNA replication.

Correct Answer
verified

Which of the following is incorrect about termination codons?

Correct Answer
verified

Exam 9: Microbial Genetics

Bacterial conjugation involves

Correct AnswerverifiedShow Answer

DNA photolyase,in the presence of visible light,can repair DNA damage due to ultraviolet radiation.

Correct AnswerverifiedShow Answer

The process in which mutations are removed and the correct bases added is called

Correct AnswerverifiedShow Answer

All of the following pertain to transcription except

Correct AnswerverifiedShow Answer

A mutation that changes a normal codon to a stop codon is called a ___ mutation.

Correct AnswerverifiedShow Answer

The operon segment composed of the gene that codes for a protein repressor is called the

Correct AnswerverifiedShow Answer

Okazaki fragments are attached to the growing end of the lagging strand by

Correct AnswerverifiedShow Answer

The DNA of an organism is made up of subunits called

Correct AnswerverifiedShow Answer

Excised introns form structures called lariats.

Correct AnswerverifiedShow Answer

Induced mutations result from errors in DNA replication.

Correct AnswerverifiedShow Answer

Which of the following is incorrect about termination codons?

Correct AnswerverifiedShow Answer

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