Physiology – Free NBDE Part 1 Questions

DentistryTalk is providing free NBDE Part 1 questions with answers to review knowledge from topic Physiology. Physiology questions covers following topics Anatomic Sciences, Biochemistry-Physiology, Microbiology-Pathology and Dental Anatomy and Occlusion.

Physiology – Free NBDE Part 1 Questions

Question 1: Which of the following statement is/are CORRECT

  1. Blood group antigens are carried over the hemoglobin molecule
  2. Blood group antigens are carbohydrates that are attached to proteins or lipids.


A. Both statements are Correct

B. Both statements are Incorrect

C. First statement is Correct while second is Incorrect

D. First statement is Incorrect while second statement is Correct

Answer & Explanation

Answer: [D]


Question 2: What is normal value of osmolality of the blood serum?

A. 275 – 290 mOsm/kg H2O

B. 310 – 325 mOsm/kg H2O

C. 150 – 175 mOsm/kg H2O

D. 375 – 390 mOsm/kg H2O

Answer & Explanation

Answer: [A]


Question 3: Which of the following compound present in blood maintains the pH of blood at 7.35?

A. Carbonic anhydrase

B. Bicarbonate ions

C. Carbonic acid

D. Both B and C

Answer & Explanation

Answer: [D]


Question 4: Which of the following protein is most abundantly found in a human cell?

A. Collagen

B. Actin

C. Myosin

D. Dystrophin

Answer & Explanation

Answer: [B]


Question 5: Tetanus toxin or tetanospamin a potent neurotoxin causes tetanus by inhibiting release of which of the following neurotransmitter?


B. Glutamate

C. Glycine

D. Acetylcholine

Answer & Explanation

Answer: [C]

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