R4RIN – MCQs, Mock Tests | Pharmacist Qualifying Examination[PEBC-Canada] RESPIRATORY SYSTEM MCQ

Most oxygen in the blood is transported

1. as oxyhemoglobin
2. as gas dissolved in plasma
3. as carboxyhemoglobin
4. as bicarbonate

✅ Correct Answer: 1

Name the process of gaseous exchange in the body.

1. Cardiovascular system
2. Lymphatic system
3. Respiration
4. Respiratory system

✅ Correct Answer: 3

What is the name of the gland which secrete melatonin?

1. Pituitary gland
2. Thyroid gland
3. Pineal gland
4. Hypothalamus

✅ Correct Answer: 3

During internal and external respiration, gases move by

1. osmosis
2. active transport
3. endocytosis
4. diffusion

✅ Correct Answer: 4

Which of the following is NOT the function of the respiratory system?

1. Protection against blood loss
2. Contains receptors for the sense of smell
3. Helps in gaseous exchange
4. Regulate blood pH

✅ Correct Answer: 1