Physiology MCQ
General physiology
1) Cell membrane
a. formed entirely of protein molecules b. are impermeable to fat soluble substances
c. in some tissues permit permit transport of
glucose at a greater rate in the
...
Physiology MCQ
General physiology
1) Cell membrane
a. formed entirely of protein molecules b. are impermeable to fat soluble substances
c. in some tissues permit permit transport of
glucose at a greater rate in the presence of
insulin
d. are not changed through out the life
Ans. c
2) The substance that contributes maximally to the osmolality inside the cell is
a. protein b. phosphate
c. urea d. potassium
Ans. c
3) Proteins that are secreted by cells are generally
a. not synthesized on ribosomes that are
bound to endoplasmic reticulum b. are synthesized in the mitochondria
c. packed in the golgi apparatus d. moves across the cell membrane by
endocytosis
Ans. c
4) The unique feature in mitochondria is
a. myosin b. actin
c. DNA d. prothrombin
Ans. c
5) The resting membrane potential of a cell
a. is dependant on the permeability of the
cell membrane to K+ being greater to Na+
b. falls to zero if Na+/K+ ATPase in
membrane is inhibited
c. is equal to the equilibrium potential for
K+
d. is equal to the equilibrium potential of
Na+
Ans. a
6) The somatic cells containing the full complement of 46 chromosomes in their
nuclei, containing all the genes necessary for carrying out the cell activities are
called
a. autosomes b. haploid cells
c. allosomes d. diploid cells
Ans. d
7) In some cases DM is due to
a. excessive receptors b. antibodies against receptors
c. deficiency of receptors for extra cellular
proteins
d. deficiency of nucleotide regulatory G
proteinsAns. b
8) Many substances are removed from the cell to outside by
a. pinocytosis b. chemotaxis
c. phagocytosis c. exocytosis
Ans. d
9) Excessive formation of a substance/ secretion in the body is controlled in order to
maintain homeostasis by
a. +ve feedback mechanism b. -ve feedback mechanism
c. osmosis d. haemodynamics
Ans. b
10 ) An action potential in a nerve
a. is terminated by influx of Na+ excessive
receptors b. is terminated by efflux of K+
c. is initiated by efflux of Na+ d. is initiated by influx of K+
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