The Nucleus

Question 1

Structure of nuclear envelope

Answer 1

Double membrane
Inner and outer membrane are phospholipid bilayers

Question 2

Function of nuclear envelope

Answer 2

Control passage of ions, molecules and RNA between the nucleoplasm and cytoplasm

Question 3

Structure of nucleus

Answer 3

Nucleoplasm contains chromatin
Contains linear chromosomes made up of DNA

Question 4

Function of nucleus

Answer 4

Controls activities of the cell
DNA inside contains instructions for synthesis of proteins

Question 5

Structure of nucleolus

Answer 5

Largest sub-structure within the nucleus
Made up of proteins, RNA and DNA

Question 6

Function of nucleolus

Answer 6

Site that ribosomes are made
Immobilises proteins and forms signal recognition particles