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General physiology MULTIPLE CHOICE QUESTIONS ( ALL ANSWERS CORRECT )

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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+ [Show More]

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