Biochemistry MCQs

Page No. 24

True about G protein couple receptors is _________________ ?


aG proteins bind to hormones on the cell surface

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bAll the three subunits alpha, beta and gamma should bind each other for G protein to act

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cG Proteins act as inhibitory and excitatory because of difference in alpha subunit

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dG protein is bound to GTP in resting state

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Fatty acid oxidation occurs in______________?


aCytoplasm

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bMicrosomes

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cMitochondria

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dAll of the above

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View Answer Mitochondria

A fatty acid that is not synthesized in man is_____________?


aLinoleic acid

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bOleic acid

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cPalmitic acid

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dStearic acid

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View Answer Linoleic acid

The most important role of cholesterol is_____________?


aIt is a component of cell membrane

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bIt is a precursor of polyunsaturated fatty acids

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cIt stores up energy

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dNone of the above

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The major lipids that make up the cell membrane are_______________?


aTriglycerides

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bPhospholipids

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cSphingomyelins

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dFatty acids

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View Answer Phospholipids

Saponification means hydrolysis of fats by________________?


aAcid

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bAlkali

✓


cWater

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dEnzymes

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View Answer Alkali

Unsaturated fatty acids are converted to______________?


aProstaglandins

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bCholesterol

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cCell membrane lipid

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dSaturated fatty acid

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View Answer Prostaglandins

Which of the following is a phospholipid________________?


aGlycogen

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bSphingomyelin

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cProstaglandin

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dOleic acid

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View Answer Sphingomyelin

In Niemann-Pick’s disease the following substrance accumulate in CNS in excess______________?


aGlycerophosphatides

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bPhosphoinositides

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cPhosphosphingosides

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dGlycerosphingosides

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View Answer Phosphosphingosides

Limiting factory for fatty acid synthesis_________________?


aAceto acetate synthetase

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bAcyl transferase

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cAcetyl CoA carboxylase

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dBiotin

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