Aerobic and anaerobic respiration Flashcards – AQA GCSE Combined Science: Trilogy (8464) — Biology — Foundation

What is aerobic respiration?

A series of chemical reactions in cells that use oxygen to break down nutrient molecules and release energy.

What is the word equation for aerobic respiration of glucose?

$\text{glucose} + \text{oxygen} \rightarrow \text{carbon dioxide} + \text{water}$

Why is energy not included among the products in the word equation for aerobic respiration?

Energy is released during the reactions, but it is not a substance.

What is anaerobic respiration?

Chemical reactions in cells that break down nutrient molecules and release energy without using oxygen.

How does the energy released per glucose molecule compare between anaerobic and aerobic respiration?

Anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.

What two products are formed when yeast breaks down glucose by anaerobic respiration?

Alcohol and carbon dioxide.

What product is formed when muscles break down glucose by anaerobic respiration during vigorous exercise?

Lactic acid.