1. Steroid hormone receptors are examples of activators that bind to which regul

Question

1. Steroid hormone receptors are examples of activators that bind to which regulatory response element:

a. steroid binding domain

b. DNA binding domain

c. protein binding domain

d. enhancers

e. silencers

2. DNA sites bound by regulatory transcription factors are:

a. promoters

b.cis-acting elements

c. poly-A tails

3. The stability of mRNA can be enhanced by:

a. a short poly-A tail

b.presence of short bits of complementary RNAs (miRNA)

c.addition of acetyl groups

d. all of the above

e. none of the above

Explanation / Answer

1. Option D is correct.

Steroid hormone receptors are cytosolic/nuclear receptors. Once bound by the hormone, they can bind to the enhancer element on the DNA and activate gene expression.

2. Option B is correct.

Regulatory proteins bind to cis-acting elements other than promoters. They can bind to operator, enhancer and silencer elements.

3. Option A is correct.

Poly A tail protects eukaryotic mRNAs from the degradation of 3'-exonucleases.

5'-G cap protects eukaryotic mRNAs from the degradation of 5'-exonucleases.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.