Proteins

Question 1

Answer 1

Question 2

Answer 2

Question 3

VIsualisation:

Could you draw the structure of an amino acid? What are the names of the different chemical groups?

Answer 3

Question 4

Answer 4

False: All R groups contain sulfur

Explanation: only some do. For example the amino acid cysteine contains sulphur that enables the formation of a disulphide bridge between two cysteine amino acids

Question 5

Short answer:

List 3 ways that the R groups on diferrent amino acids can be different from one another

Answer 5

Question 6

Answer 6

Question 7

Visualisation:

Could you draw a chemical reaction between two amino acids?

WHat type of reaction is this and what type of bond is formed?

Answer 7

Question 8

Answer 8

Question 9

Short answer:

What is the difference between protein primary and secondary structure? Give examples of secondary structure.

Answer 9

Question 10

Answer 10

Question 11

List three types of bond that stabilize the tertiary structure of a protein.

Place them in order from strongest to weakest

Answer 11

Question 12

Answer 12

Question 13

Visualisation and explanation:

How would you expect hydrophilic and hydrophobic R groups on amino acids to arrange themselves when a globular protein folds into its tertiary structure?

Answer 13

Question 14

Answer 14

Question 15

Short essay answer:

Describe the structure of haemoglobin as fully as possible

(try to go for 4 or 5 bullet points)

Answer 15

Question 16

Answer 16

Question 17

Essay Prep:

Compare and contrast the structure and roles of globular and fibrous proteins…

(try and list 6 key differences)

Answer 17

Question 18

Answer 18

Question 19

Answer 19

Question 20

Short answer:

Describe the structure of collagen in as much detail as possible

Aim for 4 bulletpoints

Answer 20

Question 21

Answer 21

Question 22

Answer 22

Question 23

Short answer:

Describe and explain the science behind the test for proteins

Extra - why doen’t this test detect amino acids (only peptides)

Answer 23