Membranes: Structure + Function (Chapter 40)

Question 1

Purpose of ICF?

Answer 1

Makes up 2/3 of our water content.

Provides a suitable environment for cell to:

• make/store/utilise energy
• repair itself
• replicate
• perform cell specific functions.

Question 2

Purpose of ECF?

Answer 2

1/3 of our water content.

Important delivery system.

Question 3

What makes up most of the “internal environment”?

Answer 3

K+,Mg2+, and Phosphate is major inorganic cation.

Question 4

What makes up most of cytsol?

Why is it important?

Answer 4

Most of the cytosol is made up of proteins.

It is important for buffering.

Question 5

The Extracellular environment is made up of?

Answer 5

Na+, Ca2+, Cl-