Gene Expression

Question 1

What is Gene expression?

Answer 1

The process by which the information stored in DNA is used to make proteins - the molecules that preform most of the cells work

Question 2

What is step 1 of gene expression?

Answer 2

Transcription

Question 3

What is the first step in Transcription?

Answer 3

RNA Polymerase binds to a section of DNA at a promoter region

Question 4

What is the 2nd step in Transcription?

Answer 4

Polymerase seperates strands of DNA

Question 5

After seperating the strands of DNA, what does the polymerase do?

Answer 5

Builds complementary strand (mRNA)

Question 6

Once the complementary strand (mRNA) has been made, what happens?

Answer 6

mRNA strand detaches and leaves the nucleus. Template strands are removed and coding strands are spliced together

Question 7

What is Step 2 of Gene Expression?

Answer 7

Translation

Question 8

What is the first step of Translation

Answer 8

mRNA attaches to ribosomes using codon sequences

Question 9

How is a polypeptide chain formed in transcription?

Answer 9

mRNA links to amino acids to form a peptide chain

Question 10

How does Gene expression end?

Answer 10

When the ribosome reaches a stop codon