Question 1

In the presence of the sugar galactose,the expression levels of GAL1,GAL2,GAL7,and GAL10 are ______________ as compared to the absence of galactose.

Accepted Answer

A)  1000-fold higher
B)  1000-fold lower
C)  10-fold higher
D)  10-fold lower
E)  the same

Question 2

How many molecules of histones H2A,H2B,H3,and H4 (respectively) comprise a single nucleosome?

Accepted Answer

A)  one each(i.e., 1, 1, 1, 1)  
B)  two each(i.e., 2, 2, 2, 2)  
C)  three each(i.e., 3, 3, 3, 3)  
D)  1,2,2,2
E)  2,2,2,1

Question 3

The regulatory element that evolved to prevent enhancers from promiscuously activating promoters is known as:

Accepted Answer

A)  the first stage of mitosis.
B)  the changing of amino acid position.
C)  enhancer-blocking elements.
D)  the changing of nucleotide position.
E)  None of the answer options are correct.

Question 4

GAL3 promotes GAL gene expression by:

Accepted Answer

A)  binding galactose only and subsequently binding to Gal80.
B)  binding ATP only,and subsequently binding to Gal80.
C)  binding galactose and ATP,and subsequently binding to Gal80.
D)  binding galactose and ATP,and subsequently binding to Gal1,Gal7,and Gal10.
E)  binding to the Gal upstream activation sequence (UAS) .

Question 5

Regions of a chromosome that are bundled in highly condensed chromatin are known as:

Accepted Answer

A)  homochromatin.
B)  heterochromatin.
C)  euchromatin.
D)  epichromatin.
E)  hyperchromatin

Question 6

The enzyme responsible for adding methyl groups to histone proteins is called:

Accepted Answer

A)  histone acetylase (H
A)  .
B)  histone deacetylase (HDA
C)  .
C)  histone acetylmethyltransferase (HAT) .
D)  histone acetyltransferase (HAT) .
E)  histone methyltransferase (HMT) .

Exam 12: Regulation of Gene Expression in Eukaryotes

GAL3 promotes GAL gene expression by:

Correct Answer
verified

In the presence of the sugar galactose,the expression levels of GAL1,GAL2,GAL7,and GAL10 are ______________ as compared to the absence of galactose.

Correct Answer
verified

How many molecules of histones H2A,H2B,H3,and H4 (respectively) comprise a single nucleosome?

Correct Answer
verified

The regulatory element that evolved to prevent enhancers from promiscuously activating promoters is known as:

Correct Answer
verified

The enzyme responsible for adding methyl groups to histone proteins is called:

Correct Answer
verified

Regions of a chromosome that are bundled in highly condensed chromatin are known as:

Correct Answer
verified

Exam 12: Regulation of Gene Expression in Eukaryotes

GAL3 promotes GAL gene expression by:

Correct AnswerverifiedShow Answer

In the presence of the sugar galactose,the expression levels of GAL1,GAL2,GAL7,and GAL10 are ______________ as compared to the absence of galactose.

Correct AnswerverifiedShow Answer

How many molecules of histones H2A,H2B,H3,and H4 (respectively) comprise a single nucleosome?

Correct AnswerverifiedShow Answer

The regulatory element that evolved to prevent enhancers from promiscuously activating promoters is known as:

Correct AnswerverifiedShow Answer

The enzyme responsible for adding methyl groups to histone proteins is called:

Correct AnswerverifiedShow Answer

Regions of a chromosome that are bundled in highly condensed chromatin are known as:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified