Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

21.

Pellagra is caused due to deficiency of the vitamin

  • thiamine

  • niacinn

  • pyridoxin

  • biotin


22.

The specific region of hypothalamus, responsible for physiological sweat secretion, is

  • para-ventricular nucleus

  • supra-optic nucleus

  • median eminence

  • pars distalis


23.

The duration of cardiac cycle is

  • 0.8 s

  • 0.8 µs

  • 0.08 s

  • 0.008 s


24.

The resolving power of a compound microscope will increase with

  • decrease in wavelength of light and increase in numerical aperture

  • increase in wavelength of light and decrease in numerical aperture

  • increase in both wavelength of light and numerical aperture 

  • decrease in both wavelength of light and numerical aperture


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25.

Osteomalacia is a disease caused by the deficiency of

  • calciferol

  • tocopherol

  • retinol

  • phylloquinone


26.

Cells in G0 phase of cell cycle

  • exit cell cycle

  • enter cell cycle

  • suspend cell cycle

  • terminate cell cycle


27.

Choose the correct non-protein amino acid

  • hydroxyproline

  • hydroxylysine

  • cystine

  • y-amino butyric acid


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28.

The major site of protein breakdown to form free amino acids is in the

  • kidney

  • spleen

  • liver

  • bone-marrow


C.

liver

The degradation of intracellular protein and other cytoplasmic macromolecules in liver is an ongoing process that regulates cytoplasmic mass and provides amino acids for energy and other metabolic uses early in starvation. Cellular proteins are conveniently divided into two general classes according to readily discernable differences in average rates of turnover. A short-lived class, having a half-life of approximately 10 min, comprises about 0.6% of total protein. Its degradation is not physiologically controlled, and the mechanism is probably nonlysosomal in nature.


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29.

Collagen is a

  • phosphoprotein

  • globulin

  • derived protein

  • scleroprotein


30.

The "Repeating Unit" of glycogen is

  • fructose

  • mannose

  • glucose

  • galactose


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