random bio

Question 1

coding genes

Answer 1

carry info for protein synthesis
produce proteins that carry most cellular roles
some are present in large amount to make hundreds of copies of rRNA and histons

Question 2

2non coding genes

Answer 2

carry info for RNA synthesis and transcription

Question 3

repeating genes due to increasing the no of chromosomes will lead to

Answer 3

increase in the no of protein

Question 4

repeating nitrogenous bases on the same gene will lead to:

Answer 4

change in the protein

Question 5

to make a ribosomal unit we need:

Answer 5

4 kinds of rRNA transcripted in the nucleus and 70 kinds mRNA translate into 70 kinds of polypeptide proteins then 4 rRNA unite with them in the nucleolus and then released to the cytoplasm

Question 6

what distinguishes rRNA from mRNA and tRNA ?

Answer 6

the multiople copies of its DNA more than 600 copies

Question 7

similarity between tRNA and rRNA is that both are chemically stable