Amino acids and Proteins

Question 1

What bond joins amino acids together?

Answer 1

peptide bond

Question 2

What biological functions are proteins included in?

Answer 2

Structural uses
Membrane carriers and pores
All enzymes are proteins
Many hormones are proteins

Question 3

what is the primary structure?

Answer 3

The sequence of amino acids that make up a protein.

Question 4

What is the secondary structure?

Answer 4

Formation of a 3D structure when a chain of amino acids coil or folds.

Question 5

What are the two secondary structure formed?

Answer 5

Beta pleated sheets and alpha helix

Question 6

What is the quaternary structure?

Answer 6

When a protein polymerises and forms a bigger protein.

Question 7

Where is collagen found?

Answer 7

Skin, mines, cartilage, tendons, teeth and the walls of blood vessel. Structural protein.

Question 8

What is collagen made up of?

Answer 8

3 polypeptide chains, each in a shape of a helix. Form a rope. Contain cross-links which form fibrils.

Question 9

What is haemoglobin made up of/

Answer 9

4 polypeptide bonds. Wrapped around a haem group.

Question 10

What type of chains do haemoglobin contain?

Answer 10

two alpha chains and two beta chains.