Gaseous Exchange & Cellular Respiration

What is the primary site of gaseous exchange in the human respiratory system?

• Trachea

• Alveoli

• Bronchi

• Larynx

Which of the following processes occurs in the absence of oxygen?

• Aerobic respiration

• Anaerobic respiration

• Photosynthesis

• Gaseous exchange

What is the main role of ATP in cellular processes?

• To store genetic information

• To provide energy

• To transport oxygen

• To act as a structural component

During aerobic respiration, what is the role of oxygen?

• To break down glucose

• To act as a final electron acceptor

• To produce carbon dioxide

• To store energy

Which of the following is a by-product of anaerobic respiration in muscles?

• Lactic acid

• Carbon dioxide

• Water

• Oxygen

How does gaseous exchange occur in the alveoli?

• By active transport

• By diffusion

• By osmosis

• By filtration

What is the main difference between aerobic and anaerobic respiration?

• Aerobic respiration occurs in the cytoplasm, anaerobic in the mitochondria

• Aerobic respiration requires oxygen, anaerobic does not

• Aerobic respiration produces lactic acid, anaerobic produces water

• Aerobic respiration is faster than anaerobic

Which of the following is NOT a component of the human respiratory system?

• Alveoli

• Bronchi

• Nephrons

• Diaphragm

What is the approximate surface area of the alveoli in an adult human lung?

• 10 square metres

• 70 square metres

• 100 square metres

• 150 square metres

Which of the following statements about ATP is true?

• ATP is only produced during anaerobic respiration

• ATP is a nucleotide that stores energy in its phosphate bonds

• ATP is a protein that transports oxygen in the blood

• ATP is a lipid that forms cell membranes