Proteins

Question 1

What do amino acids join together to make?

Answer 1

A polypeptide chain.

Question 2

What are the three groups called in an amino acid and what are they made of?

Answer 2

R group ( a range of chemicals), amino group (H2N), and a carboxyl group (COOH).

Question 3

What is the polymer formed from a chain of amino acids?

Answer 3

Polypeptide chain/ protein.

Question 4

What is the bond formed when two amino acids are joined together?

Answer 4

Peptide bond.

Question 5

What are proteins made up of?

Answer 5

C, H, O, N, and some S and P.

Question 6

What are the two bonds in secondary proteins?

Answer 6

a- helix and b-pleated sheet.

Question 7

Where does the a-helix hydrogen bond occur?

Answer 7

Every fourth peptide bond.

Question 8

What type of proteins have secondary structure?

Answer 8

Fibrous.

Question 9

What additional bonds are formed between the R groups in tertiary proteins?

Answer 9

Hydrogen( between R groups)
Disulphide (amino acids and cysteine)
Ionic ( charged R groups)

Question 10

What is an example of quaternary proteins?

Answer 10

Haemoglobin.