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Higher Biology 2.1

Metabolic pathways

QuestionAnswer
State the definition of a metabolic pathway.
What are the two types of reactions that can occur in a metabolic pathway?
Describe the features of an anabolic reaction.
Describe the features of a catabolic reaction.
Give a comparison of one difference between catabolic and anabolic reactions.
Some metabolic pathways have reversible steps. Give two more examples of features of some metabolic pathways.
Name the two components which make up the cell membrane.
What are the three functions of proteins in the cell membrane?
Describe the function of pores in relation to metabolic pathways.
Describe the function of pumps in relation to metabolic pathways.
Describe the function of enzymes in relation to metabolic pathways.
Apart from proteins, what other molecule is found in the cell membrane?
Explain what is meant by an alternative route in a metabolic pathway.
What are the two things metabolic pathways are controlled by? (tip = enzymes)
Explain the meaning of induced fit.
In terms of affinity for the active site, explain why substrates bind and products leave the active site of an enzyme.
What is the activation energy of an enzyme?
How does the enzyme's active site effect the activation energy of a reaction?
Some metabolic reactions are reversible. Describe two ways to drive a sequence of reactions in these pathways in a particular direction.
Compare the affinity of both substrate and product for the enzyme's active site.
Name the three types of inhibition of metabolic pathways.
Describe how competitive inhibitors inhibit metabolic pathways.
Describe how non-competitive inhibitors inhibit metabolic pathways.
Describe how feedback inhibition inhibits metabolic pathways.
Describe the effect of increasing the substrate concentration on a competitive inhibitor compared to the normal reaction rate.
Explain the effect of increasing the substrate concentration on a competitive inhibitor compared to the normal reaction rate.
Some metabolic pathways have alternative routes. Give two more examples of features of some metabolic pathways.
State the affinity of substrate molecules for the active site.
State the affinity of products for the active site.
Which type of inhibition cannot be reversed by increasing substrate concentration?
Created by: MsKerrBiology
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