Test Questions

Question 1

What part of the enzyme is unique & complementary to the substrate?

Answer 1

• Active site

Question 2

What is an enzyme?

Answer 2

• Biological catalyst

Question 3

Example of fibrous protein & it’s function:

Answer 3

• Collagen & structural

Question 4

Example of globular protein & its function:

Answer 4

• Haemoglobin + transport

Question 5

Name 2 of the 3 additional bonds formed in the tertiary structure.

Answer 5

• Hydrogen, ionic & disulfide

Question 6

What’s the tertiary structure of a protein?

Answer 6

• 3D structure

Question 7

Two types of shapes that can be formed due to these bonds?

Answer 7

• Alpha helix
• beta, pleated sheets

Question 8

Two types of shapes that can be formed due to these bonds?

Answer 8

• Alpha helix
• beta, pleated sheets

Question 9

Secondary structure occurs when what kind of bonds are formed?

Answer 9

• Hydrogen bonds

Question 10

Secondary structure occurs when what kind of bonds are formed?

Answer 10

• Hydrogen bonds

Question 11

What’s the primary structure of an amino acid?

Answer 11

• Sequence of amino acids (bonded by peptide bonds)

Question 12

What bonds link multiple amino acids?

Answer 12

• Peptide bonds

Question 13

2 functional groups in amino acids. What are they? What are their chemical formulae?

Answer 13

• Amino group ( NH2)
• carboxylic acid (cooh)

Question 14

Explain what The collision theory is with respect to enzymes & substrates:-

Answer 14

• Enzyme + substrate must collide.
• correct orientation
• can collide with at least The minimum energy.
• include he reaction (activation energy)

Question 15

2 things that can impact frequency of collisions & rate of reaction.

Answer 15

• Changing temp, concentration = of substrate or enzyme.
• surface area of substrate.

Question 16

Activation energy?

Answer 16

• Minimum amount of energy needed for a reaction to take place.

Question 17

Activation energy?

Answer 17

• Minimum amount of energy needed for a reaction to take place.

Question 18

What’s a non-competitive inhibitor & is the binding of this inhibitor reversible or non-reversible?

Answer 18

• Binds to active site and “competes” with substrate for binding.
• it’s reversible.

Question 19

How does surface area affect the rate of reaction?

Answer 19

• Increasing The SA, increases he rate of reaction.

Question 20

Difference between lock & key & he included fit models?

Answer 20

Lock & key model= active site shape is unique.
Induced fit model= active site shape charges to Bette fit substrate.