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Cellular Respiration and Superoxide

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Questions and Answers

What happens to electrons that 'escape' during cellular respiration?

They complete the Krebs cycle
They are transferred to an oxygen molecule (correct)
They are transferred to a molecule of water
They convert into ATP

What is the result of electrons being transferred to an oxygen molecule during cellular respiration?

The formation of superoxide (correct)
The formation of water
The formation of NADH
The formation of ATP

What is the term for oxygen with an unpaired electron?

Superoxide (correct)
Oxidase
Oxide
Oxygenase

During cellular respiration, what is the typical outcome of electrons that do not 'escape'?

They complete the electron transport chain (D) Signup and view all the answers

What is unique about the oxygen molecule involved in the formation of superoxide?

It has two atoms (D) Signup and view all the answers

What is the primary function of antioxidant chemicals in the human body?

To block free radicals from stealing electrons (D) Signup and view all the answers

Where do antioxidants exert their effects?

Both inside and outside of cells (C) Signup and view all the answers

What is the role of free radical detoxifying enzymes in the body?

To neutralize free radicals (B) Signup and view all the answers

What is a common characteristic of antioxidants?

They can donate electrons (D) Signup and view all the answers

What is the ultimate goal of the body's defense mechanisms against free radicals?

To reduce the impact of free radicals (A) Signup and view all the answers

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