biochemistry MCQs – Page 13

Practise focused biochemistry questions with marked answers for exam preparation and subject revision.

biochemistry Mcqs
241. Restriction endonuclease cleaves______________?
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A. Polypeptide

B. SIngle stranded RNA

C. Double stranded DNA

D. SIngle stranded DNA

242. Which of the following is correct about breakdown of hemoglobin (Hb)_____________?
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A. Heme?Hb?Biliverdin?Urobilinogen

B. Hb?Heme?bilirubin?Urobilinogen?Biliverdin

C. Hb?Heme?bilirubin?Urobilinogen

D. Hb?Heme?Bilverdin?Uro bilinogen
243. In Niemann-Picks disease the following substrance accumulate in CNS in excess______________?
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A. Phosphoinositides

B. Glycerophosphatides

C. Phosphosphingosides

D. Glycerosphingosides

244. A small Ca+2 binding protein that modifies the activity of many enzymes and other proteins in response to changes of Ca+2 concentration is known as______________?
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A. Kinesin

B. Calmodulin

C. Collagen

D. Cycline

245. Glycemic index of a starchy food is a measure of its________________?
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A. None of the above

B. Collectivity

C. Utility

D. Energy

246. The amino acid residue having animino side chain is____________?
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A. Tyrosine

B. Proline

C. Histidine

D. Lysine

247. Fatty acid oxidation occurs in______________?
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A. Microsomes

B. All of the above

C. Mitochondria

D. Cytoplasm

248. Which of the following factors delay wound healing____________?
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A. B & C option

B. Ascorbic acid deficiency

C. Vitamin B12 deficiency

D. Infection

249. The product of oxidation of odd chainfatty acids is______________?
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A. Propionyl CoA

B. Fumaryl CoA

C. Aceto acetyl CoA

D. Malonyl CoA

250. R-RNA is mainly produced mainly in___________?
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A. Ribosome

B. Nucleolus

C. Endoplasmic reticulum

D. Nucleus

251. Precursor of melanin is________________?
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A. Tyrosine

B. Phenylalanine

C. Tryptophan

D. Methionine

252. Alkaptonuria, an inherited metabolic disorder of L0tyrosine metabolism is due to lack of_____________?
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A. Tyrosine transaminase

B. Tyrosine oxidase

C. Homogentisate oxidase

D. Parahydroxy phenyl pyruvate Hydroxylase

253. Peripheral neuropathy due to deficiency of vitamin is seen with_______________?
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A. Pantothenic acid

B. Vit E

C. Vit A

D. Pyridoxine
254. Fat provides ______% of bodys calories?
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A. 50%

B. 40%

C. 75%

D. 30%
255. Which is the by product of the urea cycle_______________?
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A. Aspartate

B. Succinate

C. Fumarate

D. Ornithine

256. Cell membrane consists of_________________?
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A. Lipids only

B. None of the above

C. Lipids and proteins

D. Protein only

257. Creatine is formed metabolically from______________?
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A. Phenylalanine

B. Histidine

C. Arginine

D. Tryptophan

258. Aromatic ring is present in_____________?
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A. Glycine

B. Phenylalanine, Glycine

C. Arginine

D. Phenylalanine
259. The primary role of chaperones is to help in______________?
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A. Protein folding

B. Protein synthesis

C. Protein degradation

D. Protein denaturation

260. Ligant for peroxisome proliferation activating receptor (PPAR) receptors, a group of nuclear hormone receptors that are involved in the regulation of genes related to glucose and lipid metabolism is_____________?
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A. Rosiglitgazone

B. Voglibose

C. Repaglinide

D. Exanatide