Higher Biology - Unit 2

Anabolic reaction

• Smaller substrates into larger products releasing energy

• Smaller substrates into larger products using energy

• Larger substrates into smaller products releasing energy

• Larger substrates into smaller products using energy

Catabolic reaction

• Smaller substrates into larger products releasing energy

• Smaller substrates into larger products using energy

• Larger substrates into smaller products releasing energy

• Larger substrates into smaller products using energy

Examples of proteins in the membrane are

• Phospholipids, pores and enzymes

• Phospholipds, pores and pumps

• Pores, pumps and enzymes

• Pumps, enzymes and ligase

The energy required to break bonds between reactants is

• Activation energy

• Active site

• Anabolic

• Aestivation

The higher the activation energy the

• slower the enzyme will work

• faster the enzyme will work

Which of the following is correct for the affinity of substrates and products towards an enzyme?

• Substrates have a high affinity, products have a high affinity

• Substrates have a low affinity, products have a low affinity

• Substrates have a low affinity, products have a high affinity

• Substrates have a high affinity, products have a low affinity

Induced fit is when

• a competitive inhibitor binds to the enzyme

• a non-competitive inhibitor binds to the enzyme

• the active site of an enzyme changes shape for a substrate

• the substrate changes shape for the enzyme

Competitive inhibition is when

• an inhibitor binds to the other site of the enzyme

• an inhibitor binds to the active site of the enzyme

• a product in a metabolic pathway inhibits an enzyme earlier in the pathway

Non-competitive inhibition is when

• an inhibitor binds to the other site of the enzyme

• an inhibitor binds to the active site of the enzyme

• a product in a metabolic pathway inhibits an enzyme earlier in the pathway

Feedback inhibition is when

• an inhibitor binds to the other site of the enzyme

• an inhibitor binds to the active site of the enzyme

• a product in a metabolic pathway inhibits an enzyme earlier in the pathway