Respiratory System MCQs with Answers

The production of energy is.

• A.Faster in anaerobic respiration
• B.Slower in anaerobic respiration
• C.Equal in both aerobic and anaerobic respiration
• D.Absent in anaerobic respiration

In animals, the product of anaerobic respiration is _?

• A.Ethanol
• B.Lactic acid
• C.Carbon dioxide only
• D.Oxygen

Asthma and Lung Cancer are the main disorders of?

• A.Heart
• B.Kidneys
• C.Lungs
• D.Liver

_ is "inflammation of the tubes leading from the wind pipe to the lungs".

• A.Bronchitis
• B.Laryngitis
• C.Tracheitis
• D.Pneumonia

Past Paper MCQ

What is the normal respiration rate in a healthy adult at rest?

• A.10–12 breaths per minute
• B.14–18 breaths per minute
• C.20–24 breaths per minute
• D.26–30 breaths per minute

Past Paper MCQ

Main energy source in respiration:

• A.Glucose
• B.Oxygen
• C.Carbon dioxide
• D.Water

Past Paper MCQ

Due to smoking, damage to alveoli results in?

• A.Increased oxygen absorption
• B.Reduced gas exchange efficiency
• C.Enhanced lung elasticity
• D.Strengthened alveolar walls

Past Paper MCQ

The normal ranges of respirations in an adult are:

• A.8-12 Breaths Per Minute
• B.20-30 Breaths Per Minute
• C.30-40 Breaths Per Minute
• D.12-20 Breaths Per Minute

The breakdown of food molecules to release energy is called?

• A.Photosynthesis
• B.Excretion
• C.Digestion
• D.Respiration

During breathing, the clean, moist and warm air enters the wind pipe called?

• A.Bronchus
• B.Larynx
• C.Pharynx
• D.Trachea