iGCSE Respiration & Gas Exchange

Which of these characteristics makes the alveoli efficient at gas exchange?

• They have thick walls
• They have a large surface area
• They have a poor blood supply

What is the role of ATP

• It stores the energy needed for cel processes
• It provides the cell with oxygen
• It breaks down carbon dioxide in the cell

When breathing in, which structure(s) does air enter first

• Alveoli
• Trachea
• Bronchi

Which of these is produced by aerobic respiration but NOT by anaerobic respiration

• Water
• Lactic acid
• ATP
• Oxygen

Which type of respiration transfers more energy?

• Aerobic
• Anaerobic

Tue or False? Anaerobic respiration requires oxygen

• True
• False

During a school sports day, Mia participates in a sprint race. This vigorous exercise causes her ....

• respiration rate to decrease

• breathing rate to increase

• heart rate to decrease

Why do alveoli have a moist lining?

• To reduce their surface area
• To make their walls permeable
• For gases to dissolve in

Energy transferred by respiration is used to make molecules of what?

• Glucose
• Oxygen
• ATP

Pleural membranes surround ...

• heart
• trachea
• lungs