Review

Front

What is the product of RNA polymerase II?

Back

mRNA

Front

What is the result of a super suppressor mutation in the lac repressor gene and a mutation in the lac operator?

Back

Constitutive expression of the lac operon.

Front

What is the term for RNA polymerase when it is fully assembled with all subunits and cofactors?

Back

Holoenzyme

Front

Which translation factor is phosphorylated by stress-induced kinases to temporarily repress translation globally?

Back

eIF2

Front

What is the product of RNA polymerase III?

Back

tRNA

Front

What is the function of RNA polymerase II in eukaryotic cells?

Back

It synthesizes mRNA from a DNA template.

Front

What is the role of the lac repressor in the lac operon?

Back

It inhibits the expression of the lac operon in the absence of lactose.

Front

What is the significance of the holoenzyme form of RNA polymerase?

Back

It is the active form that can initiate transcription.

Front

How does eIF2 function in the regulation of translation?

Back

It helps in the initiation of translation and is involved in the response to stress.

Front

What types of RNA are produced by RNA polymerase I, II, and III respectively?

Back

RNA polymerase I produces rRNA, RNA polymerase II produces mRNA, and RNA polymerase III produces tRNA.