HH U1 KA6 Metabolic Pathways

A metabolic pathway consists of ...

• a series of reactions

• a series of enzymes

• a series of chemical reactions

• a series of biological reactions

Two features of anabolic reaction sequences are...

• Breakdown of molecules & requires energy

• Breakdown of molecules & Releases energy

• builds up molecules & releases energy

• builds up molecules & requires energy

Two features of catabolic reaction sequences are...

• Breakdown of molecules & requires energy

• Breakdown of molecules & Releases energy

• builds up molecules & releases energy

• builds up molecules & requires energy

Type of reaction involved in ATP synthesis.

• anabolic

• catabolic

The diagram below shows a metabolic pathway that is controlled by end product inhibition. For Substance 4 to bring about end product inhibition, with which of the following would it interact?

• Substance 1

• Substance 3

• Enzyme 1

• Enzyme 3

The change in shape of the active site of an enzyme, when its substrate binds, is called...

• specificity

• induced fit

• activation

• inhibition

This is high between active site and substrate and low between active site and product

• orientation

• lowers activation energy

• induced fit

• affinity

Which type of inhibition involves an inhibitor with a similar shape to the substrate?

• End product

• Competitive

• Non-competitive

• Lead

Which type of inhibition can be overcome by increasing substrate concentration

• End product

• competitive

• non-competitive

• No type

Which type of inhibition changes the shape of the active site?

• End product

• Competitive

• Non-competitive

• Alternative pathway