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

by Robb West 4 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.

Why does RISC bind to specific mRNA?

RISC binds to a specific mRNA because the small RNA within RISC is complementary to that mRNA. The bonding is hydrogen bonding between complementary bases

How does piRISC inhibit RNA?

directly inhibit RNA in the cytosol by binding to the TE RNA and an Argonaute protein within the piRISC cuts it to pieces

What group of RNA is covalently modified?

covalently modify rRNA's: methylation of ribose on 2' hydroxyl group and/or conversion of uracil to pseudouracil

What is a dsRNA method?

A technique to silence the expression of selected genes in nonmammalian organisms. The method uses dsRNA molecules matching the sequence of a particular gene to trigger the breakdown of the gene's messenger RNA.

How long is pre-miRNA?

1. pre-miRNA or pre-siRNA is cut by DICER (endonuclease): this cuts the RNA into fragments about 20-25 bp long

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.