3.18

Question 1

What are transcription factors?

Answer 1

They are proteins that bind to the DNA in the nucleus and affect the process of transcribing the genetic material

Question 2

What is transcription?

Answer 2

The process by which the genetic code of the DNA is copied to a complementary strand of mRNA

Question 3

What are promoter sequences

Answer 3

specific regions of DNA

Question 4

How do cells become specialised

Answer 4

Through differential gene expression, a chemical stimulus produces active mRNA, leading to the synthesis of proteins which, in turn, control cell processes or determine cell structure in animals and plants

Question 5

name the molecule with segments of DNA or RNA containing information coding for a protein or peptide sequence

Answer 5

exons

Question 6

name the molecule with segments of DNA o RNA containing information which does not code for a protein or peptide sequence.

Answer 6

introns.