to which part of the mrna sequence does the risc bind? course hero chapter 17 reading quiz answers

by Julia Pacocha 9 min read

What proteins influence the ability of RNA polymerase to initiate transcription of a gene?

How many nucleotides does a dicer produce?

Why do cactus spines and pea tendrils illustrate homoplasy?

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What proteins influence the ability of RNA polymerase to initiate transcription of a gene?

DNA-binding proteins influence the ability of RNA polymerase to initiate transcription of a gene.

How many nucleotides does a dicer produce?

Dicer processes and cleaves double-stranded RNA to produce 21- to 25- nucleotide-long sequences.

Why do cactus spines and pea tendrils illustrate homoplasy?

A cactus spine and a pea tendril illustrate homoplasy because both are modified leaves.

What proteins influence the ability of RNA polymerase to initiate transcription of a gene?

A. DNA‑binding proteins influence the ability of RNA polymerase to initiate transcription of a gene.

Which enzyme represses transcription?

C. acetylation of histones by acetyltransferase; represses transcription

What is the C complex?

C. a complex of DNA polymerase, transcription factors, and other transcription proteins

What must be unwound from histone proteins before transcription of a gene takes place?

D. DNA must be unwound from histone proteins before transcription of a gene takes place.

Which apparatus will repress transcription without them?

E. The basal transcription apparatus will repress transcription without them.

Can a basal transcription apparatus bind to an activator site?

A. They can bind near an activator site and prevent activator contact with the basal transcription apparatus.

Can basal transcription apparatus produce minimal levels of transcription without them?

B. The basal transcription apparatus can only produce minimal levels of transcription without them.

What proteins influence the ability of RNA polymerase to initiate transcription of a gene?

DNA-binding proteins influence the ability of RNA polymerase to initiate transcription of a gene.

How many nucleotides does a dicer produce?

Dicer processes and cleaves double-stranded RNA to produce 21- to 25- nucleotide-long sequences.

Why do cactus spines and pea tendrils illustrate homoplasy?

A cactus spine and a pea tendril illustrate homoplasy because both are modified leaves.