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Question: Molecular Biology Help!!! What is the E site of the ribosome? A. entry site B. exit s…

Molecular Biology Help!!!

What is the E site of the ribosome?

A. entry site

B. exit site

C. enhancer site

D. peptidyltransferase site

E. none of the above

A carrier molecule, lactose ___________ is required for entry of
lactose and other galactosides into the E. coli bacterium.

A. repressor

B. activator

C. permease

D. reductase

E. none of the above

The segment of mRNA that codes for a polypeptide chain is called
a(n) _______________________.

A. translation unit

B. promoter unit

C. operon

D. open reading frame

E. none of the above

___________ deacetylation tends to lower transcriptional
activity.

A. DNA

B. RNA

C. Histone

D. RNA polymerase

E. none of the above

All tRNA molecules have _________at their 3′ end.

A. 5′-m7 G caps

B. poly (A) tails

C. CCAOH

D. TATA

E. none of the above

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