Nucleus

Question 1

what is the nucleolus

Answer 1

nucleolus is a small dense area of the nucleus where rRNA is transcribed

Question 2

explain structure surrounding the nucleus

Answer 2

nucleus is enclosed in a nuclear envelope, made up of an inner and outer nuclear membrane which contain nuclear pores
nucleus is surrounded by a double nuclear membrane

Question 3

structure between the inner and outer sheets of nuclear envelope

Answer 3

between the 2 sheets is the perinuclear cistern, which is continuous with cistern of the endoplasmic reticulum

Question 4

describe the outer nuclear membrane

Answer 4

studded with ribosomes and it is continuous with the rough endoplasmic reticulum in the cytoplasm

Question 5

function of the nucleus

Answer 5

stores chromosomes and is location of RNA synthesis

mRNA and tRNA are transcribed there

Question 6

what is euchromatin

Answer 6

DNA in nucleus that is more dispersed, actively undergoing transcription

Question 7

what is heterochromatin

Answer 7

DNA highly condensed, not undergoing transcription