National 5 Biology - Fermentation

Which of the following reactions takes place during fermentation in plant cells?

• pyruvate -> carbon dioxide + ethanol

• glucose -> carbon dioxide + water

• glucose -> water + ethanol

• pyruvate -> lactate

Which of the following reactions takes place during fermentation in plant cells?

• Pyruvate -> carbon dioxide + ethanol

• Glucose -> carbon dioxide + water

• Glucose -> water + ethanol

• Pyruvate -> lactate

Tick all of the statements that apply to fermentation in animal cells.

• Oxygen is required

• Pyruvate is formed

• Lactate is formed

• Carbon dioxide is formed

Name a cellular process which requires energy from ATP.

The diagram below represents the fermentation pathway in a plant cell. What is molecule X?

The diagram below represents the fermentation pathway in a plant cell. What is molecule Y?

Name the gas produced during fermentation in yeast.

Which of the following substances increases in concentration in contracting human muscle cells when their respiration occurs in the absence of oxygen?

• Lactate

• Glucose

• Ethanol

• ATP

State the location of the fermentation pathway in a cell.

What is the number of molecules of ATP produced per glucose molecule during fermentation?