General Physiology MCQs ( True/False )
1) Which of the following is the least correct regarding Na+/K+ ATPase?
a) It has a coupling ratio of 2:3
b) It is an electrogenic pump
c) It indirectly affects Ca2+ transport in muscle cells
d) Digitalis inhibits it’s activity on the myocardium
e) It is a voltage gated ion channel
2) In which of the following do red cells remain undamaged for several hours?
a) Distilled water
b) 0.5% saline
c) 9% saline
d) 0.9% saline
e) 10% dextrose
5) Total body water of 45% of body weight is most likely to be in
a) Newborn infant
b) Young healthy adult
c) An elderly male
d) Obese female
e) Pregnant woman
6) Which of the following present the amount of ECF as a percentage of total body water
a) 5%
b) 10%
c) 15%
d) 20%
e) 30%
7) When compared to ICF, which of the following is in lowest concentration in ECF
a) Ca2+
b) Na+
c) K+
d) HCO3-
e) Proteins
9) The body temperature is relatively constant in man despite wide changes in the atmospheric temperature. This is best described as,
a) Positive feedback mechanism
b) Feed forward mechanism
c) Negative feedback mechanism
d) Conservation of heat
e) Heat loss & heat gain mechanism
10) Which of the following mechanisms in living cell does not involve expenditure of energy
a) Glucose entering living cell
b) Solute movement through water filled pores
c) Sodium-Potassium pump
d) Resting membrane potential
e) Exocytosis
Labels: General MCQs, Physiology MCQ