Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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31.

Graham's law is correlated with

  • diffusion

  • osmoregulation

  • osmosis

  • absorption


A.

diffusion

Graham's law of effusion (also called Graham's law of diffusion) was formulated by Scottish physical chemist Thomas Graham in 1848. Graham found experimentally that the rate of effusion of a gas is inversely proportional to the square root of the mass of its particles.


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32.

Which of the following does not act as a neurotransmitter

  • Acetylcholine

  • Epinephrine

  • Glutamic acid

  • Tyrosine


33.

The generation of excitation-contraction coupling involves all the following events except

  • generation of end-plate potential

  • release of calcium from troponin

  • formation of cross-linkages between actin and myosin

  • hydrolysis of ATP to ADP


34.

Generally artificial pace-maker consists of one battery made up of

  • nickel

  • dry cadmium

  • photo sensitive material

  • lethium


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35.

Goitre can occur as a consequence of all the following except

  • iodine deficiency

  • pituitary adenoma

  • Grave's disease

  • excessive intake of exogenous thyroxin


36.

Pernicious anaemia results due to deficiency of

  • vitamin-B1

  • vitamin-A

  • vitamin-B12

  • iron


37.

Which of the following substances yield less than 4 kcal/mol when its phosphate bond is hydrolysed

  • Creatine phosphate

  • ADP

  • Glucose-6-phosphate

  • ATP


38.

The genetic deficiency of ADH-receptor leads to

  • diabetes mellitus

  • glycosuria

  • diabetes insipidus

  • nephrogenic diabetes


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39.

Cellular totipotency was first demonstrated by

  • F C Steward

  • Robert Hooke

  • T Schwann

  • A v Leeuwenhoek


40.

Choose the minor carp from the following

  • Cyprinus carpio

  • Anguilla sp

  • Labeo bata

  • cetanophyrngodon idella


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