Respiration IB

What is a consequence of anaerobic cell respiration in muscles?

• Large yield of readily available ATP and ethanol production

• Small yield of readily available ATP and lactate accumulation

• Large yield of ATP and production of carbon dioxide and lactic acid

• Small yield of ATP that is not readily available and carbon dioxide production

What are functions of type I and type II alveolar pneumocytes?

• Type I: Produce surfactant, Type II: Exchange CO₂

• Type I: Exchange CO₂, Type II: Exchange CO₂

• Type I: Phagocytic cells, Type II: Protective epithelial cells

• Type I: Carry out gas exchange, Type II: Produce surfactant

The diagram shows some reactions occurring during respiration in the mitochondrion.

• As ATP

• As glucose

• In lysed water

• As reduced NAD

Which of the following is a product of anaerobic respiration in yeast?

Which of the following is a thermal property of water that is different from methane?

• water has a lower boiling point

• water has lower specific heat capacity

• water has higher latent heat of vaporisation

• water has hydrogen bonds

What additional role does oxygen play in aerobic cell respiration besides being the final electron acceptor?

Match the following statements with their corresponding properties.

• Elements with low electronegativity

• It has a high affinity for electrons

• Non-electronegative elements

• It repels electrons

• Oxygen is highly electronegative because

• It has a low affinity for electrons

• Inert gases

• It does not interact with electrons

What is the role of NAD/FAD in the electron transport chain?

• To produce water

• To regenerate/reduce NAD/FAD

• To convert glucose to ATP

• To remove protons from the stroma

What causes pressure/volume changes in the thorax during ventilation?

• Contraction of the diaphragm only

• Muscle contractions

• Relaxation of intercostal muscles

• Exhalation of air

(a)   occurs during inspiration.

• Contraction of external intercostal
• Relaxation of external intercostal
• Contraction of internal intercostal
• Relaxation of internal intercostal