KS3 Science by Cognito. Biology: Respiration

Choose the correct option: What is the function of respiration in cells?

• to absorb carbon dioxide

• to release energy

• to produce oxygen

• to produce glucose

Answer the question in full: Why is it emphasised that the energy is not created but transferred from the glucose molecule in the respiration process?

Choose the correct option: Where does aerobic respiration occur in the cell?

• cytoplasm

• mitochondria

• nucleus

• cell membrane

Choose the correct option(s): What are the waste products of aerobic respiration?

• carbon dioxide

• water

• ethanol

• lactic acid

• oxygen

Choose the correct option: When does anaerobic respiration occur in humans?

• when oxygen levels are high

• during normal daily activities

• during sleep

• during intense exercise

Choose the correct option: What are the waste products of anaerobic respiration in yeast?

• glucose

• oxygen

• carbon dioxide

• ethanol

• lactic acid

Fill in the gap correctly: Aerobic respiration occurs in the mitochondria and uses oxygen to release a large amount of ... .

Fill in the gap correctly: What is the type of acid that is produced in human muscles during anaerobic respiration?

Choose the correct option: Which of the following is true about respiration?

• It occurs only in animal cells.

• It occurs in all living cells.

• It occurs only in plant cells.

• It occurs only in bacterial cells.