Organelles

Question 1

What are some characteristics of the nucleus?

Answer 1

Surrounded by nuclear envelope which is a double membrane with nuclear pores that allow mRNA and ribosomes to pass through.

Contains nucleoplasm where chemical reactions take place

Nucleolus is inside and synthesis ribosomes

Question 2

What are the main functions of the nucleus?

Answer 2

Produces mRNA and tRNA

Stores genetic material (DNA and chromosomes)

Synthesises ribosomes and ribosomal RNA

Question 3

What are some characteristics of mitochondria?

Answer 3

Surrounded by a double membrane (membrane bound) that controls what enters and exits the organelle

Has cristae which provide a large surface area for the attachment of enzymes and other proteins involved in respiration.

The matrix contains proteins, lipids, ribosomes and DNA that allow it to control the production of some of its own proteins. Contains many enzymes involved in respiration.

Question 4

What are some functions of mitochondria?

Answer 4

Site of aerobic respiration

Produces ATP

Question 5

Characteristics of the Rough ER

Answer 5

Large surface area

Series of membrane folds that connect to nuclear envelope

Cisternae

Studded with ribosomes

Question 6

What are some functions of the Rough ER?

Answer 6

Provides a large surface area for protein synthesis

Stores and transports proteins