Biology Topic Practice

Aerobic Respiration

Aerobic respiration is an exothermic reaction which provides energy for cells.

Where in the cell does most aerobic respiration take place?

What is Aerobic Respiration?

"Aerobic respiration is the chemical process by which cells break down glucose using oxygen to release energy."

Question 1

Which word equation correctly represents photosynthesis?

Question 2

On a very hot, bright day, the rate of photosynthesis might actually slow down. Why?

Question 3

Select which change would usually increase the rate of photosynthesis if light intensity is the limiting factor?

Question 4

In which part of a plant cell does photosynthesis take place?

The Respiration Reaction

Oxygen: Required for full breakdown of glucose.

Exothermic: Releases energy to the environment (heat).

Equation: Glucose + oxygen $\rightarrow$ carbon dioxide + water.

Site: Occurs continuously in the mitochondria of animal and plant cells.

Exam Tip

Do not confuse respiration with breathing (ventilation). Respiration is a chemical process.

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