Chapter 1

Question 1

What is the nucleus?

Answer 1

A large organelle present in all eukaryotic cells, separated from the cytoplasm by a double membrane.

Question 2

What does the nucleus contain?

Answer 2

DNA, which is arranged into chromosomes.

Question 3

What are chromosomes made of?

Answer 3

DNA and proteins, collectively referred to as chromatin.

Question 4

What is the nuclear membrane also known as?

Answer 4

The nuclear envelope.

Question 5

What are nuclear pores?

Answer 5

Channels that allow mRNA and ribosomes to travel out of the nucleus and allow enzymes and signalling molecules to move in.

Question 6

What is the function of the nucleolus?

Answer 6

It is the site of ribosome production.

Question 7

Fill in the blank: The nucleus contains a region known as the _______.

Answer 7

nucleolus

Question 8

True or False: The nucleus is only found in prokaryotic cells.

Answer 8

False

Question 9

What is chromatin?

Answer 9

A complex of DNA and proteins found in chromosomes.

Question 10

What separates the nucleus from the cytoplasm?

Answer 10

A double membrane.

Question 11

What is the liquid within the nucleus called?

Answer 11

Nucleoplasm.