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Bioenergetics and Enzyme Mechanism Quiz

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Questions and Answers

What is the role of enzymes in chemical reactions?

Increasing the rate of chemical reactions (correct)

Causing the reaction to occur

Altering the free energy change

Requiring a high activation energy

Which of the following factors does NOT affect enzyme activity?

Modulator presence

Increased activation energy (correct)

Substrate and product concentrations

Temperature

What happens when a substrate binds to an enzyme's active site?

No product formation takes place

The enzyme alters its free energy

Formation of E-S complex occurs (correct)

Only the substrate changes

How does temperature affect enzymes according to the text?

Affects enzymes in athletes undergoing heat (D) Signup and view all the answers

What is the purpose of negative feedback in the creation of ATP?

Turns off the substrates (B) Signup and view all the answers

What is the primary effect of stimulators on enzymes?

Increase the likelihood of the E-S complex formation (B) Signup and view all the answers

How does temperature affect enzyme activity?

Enzymes work best at a specific temperature range (C) Signup and view all the answers

What effect does a decrease in pH have on enzyme activity?

Inhibits enzyme activity (D) Signup and view all the answers

What is the purpose of using sodium bicarbonate as a buffering agent in exercise?

To neutralize acids produced during intense exercise (A) Signup and view all the answers

Why is it important for athletes to test their responses before using sodium bicarbonate?

To ensure it does not contribute to gastrointestinal upset (C) Signup and view all the answers