Question 1

The smallest unit of heredity is a chromosome.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is incorrect about termination codons?

Accepted Answer

A)  where the bond between the final tRNA and the finished polypeptide chain is broken
B)  include AUG
C)  include UAA,UAG,and UGA
D)  do not have corresponding tRNA
E)  can also be called nonsense codonsF) B) and C)
G) All of the above

Question 3

Which of the following is not true of an organism's genotype?

Accepted Answer

A)  is inherited
B)  are structural genes coding for proteins
C)  are genes coding for RNA
D)  are regulatory genes controlling gene expression
E)  are the expressed traits governed by the genesF) None of the above
G) All of the above

Question 4

Geneticists can make complimentary DNA from messenger,transfer,and ribosomal RNA by using

Accepted Answer

A)  palindromes.
B)  reverse transcriptase.
C)  restriction endonucleases.
D)  ligases.
E)  DNA polymerases.F) A) and B)
G) C) and D)

Question 5

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)  proceeds in the 5' to 3' direction of the growing mRNA molecule.F) B) and C)
G) A) and D)

Question 6

If the mRNA codon for alanine is GCA,then the correct anticodon would be:ev: 10_31_2012

Accepted Answer

A)  GCA.
B)  CGT.
C)  ACG.
D)  CGU.
E)  UGC.F) C) and D)
G) A) and E)

Question 7

Which is incorrect about purines?

Accepted Answer

A)  only found in DNA,not in RNA
B)  are nitrogenous bases
C)  always paired with a specific pyrimidine
D)  include adenine and guanine
E)  found within nucleotidesF) A) and D)
G) C) and E)

Question 8

Which of the following is not true of conjugation?

Accepted Answer

A)  It involves direct contact between cells.
B)  It transfers genes for drug resistance.
C)  It transfers genes for resistance to heavy metals.
D)  It transfers genes for a polysaccharide capsule.
E)  The donor retains a copy of the transferred genes.F) C) and E)
G) A) and C)

Question 9

Each _____ is a specific segment of the DNA with the code for production of one functional product.

Accepted Answer

A)  intron
B)  exon
C)  gene
D)  operator
E)  tripletF) A) and D)
G) B) and D)

Question 10

A frame shift is caused by ______ mutations.

Accepted Answer

A)  missense and insertion
B)  missense and nonsense
C)  nonsense and deletion
D)  deletion and insertion
E)  insertion and nonsenseF) D) and E)
G) A) and D)

Question 11

DNA fragments can be separated in gel electrophoresis because

Accepted Answer

A)  nitrogenous bases have a net positive charge.
B)  nitrogenous bases have a net negative charge.
C)  phosphate groups have a net positive charge.
D)  phosphate groups have a net negative charge.
E)  None of the choices is correct.F) B) and D)
G) B) and E)

Exam 8: Microbial Genetics and Genetic Engineering

DNA fragments can be separated in gel electrophoresis because

Correct Answer
verified

If the mRNA codon for alanine is GCA,then the correct anticodon would be:ev: 10_31_2012

Correct Answer
verified

A frame shift is caused by ______ mutations.

Correct Answer
verified

Which of the following is incorrect about termination codons?

Correct Answer
verified

The smallest unit of heredity is a chromosome.

Correct Answer
verified

Which of the following is not true of conjugation?

Correct Answer
verified

All of the following pertain to transcription except

Correct Answer
verified

Which is incorrect about purines?

Correct Answer
verified

Which of the following is not true of an organism's genotype?

Correct Answer
verified

Geneticists can make complimentary DNA from messenger,transfer,and ribosomal RNA by using

Correct Answer
verified

Each _____ is a specific segment of the DNA with the code for production of one functional product.

Correct Answer
verified

Exam 8: Microbial Genetics and Genetic Engineering

DNA fragments can be separated in gel electrophoresis because

Correct AnswerverifiedShow Answer

If the mRNA codon for alanine is GCA,then the correct anticodon would be:ev: 10_31_2012

Correct AnswerverifiedShow Answer

A frame shift is caused by ______ mutations.

Correct AnswerverifiedShow Answer

Which of the following is incorrect about termination codons?

Correct AnswerverifiedShow Answer

The smallest unit of heredity is a chromosome.

Correct AnswerverifiedShow Answer

Which of the following is not true of conjugation?

Correct AnswerverifiedShow Answer

All of the following pertain to transcription except

Correct AnswerverifiedShow Answer

Which is incorrect about purines?

Correct AnswerverifiedShow Answer

Which of the following is not true of an organism's genotype?

Correct AnswerverifiedShow Answer

Geneticists can make complimentary DNA from messenger,transfer,and ribosomal RNA by using

Correct AnswerverifiedShow Answer

Each _____ is a specific segment of the DNA with the code for production of one functional product.

Correct AnswerverifiedShow Answer

Correct Answer
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