RNA interference on gene expression

Question 1

What is siRNA?

Answer 1

A small RNA molecule used to inhibit translation of mRNA

Question 2

How does siRNA operate PT.1?

Answer 2

• An enzyme cuts large double-stranded molecules of RNA into smaller sections called siRNA.
• One of the two siRNA strands combine with an enzyme

Question 3

How does siRNA operate PT.2?

Answer 3

• the siRNA molecule guides the enzyme to a mRNA molecule via complementary base pairing
• once in position the mRNA cuts the enzyme into smaller sections

Question 4

How does siRNA operate PT.3?

Answer 4

• The mRNA is no longer capable of being translated into a polypeptide
• This means means gene has not been expressed