biochemistry MCQs – Page 10

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

biochemistry Mcqs

181. B-oxidation of odd-chain fatty aids produce_______________?
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A. Propionyl CoA

B. Acetyl CoA

C. Succinyl CoA

D. Malonyl CoA

182. Aniacinosis results in______________?
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A. Beri beri

B. Perleche

C. Nyctalopia

D. Pellagra

183. The precursor of steroid is_______________?
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A. Cholesterol

B. None of the above

C. Amino acids

D. Fatty acids

184. All are genetic amino acid deficiency disease except___________?
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A. 6alactosemia

B. Alkaptonuria

C. Homocystinuria

D. Phenyl ketonuria

185. Which of the following fatty acids are not syntehsised in human body_____________?
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A. Linoleic, arachidonic and stearic acid

B. Oleic, linoleic and linolenic acid

C. Arachidonic, linolenic and linoleic acid

D. Palmitic Oleic and arachidonic

186. Increase in lactate and pyruvate is seen in deficiency of_____________?
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A. Retinotic acid

B. Thiamine

C. Niacin

D. Pyridoxin

187. Histidine is converted to histamine by_____________?
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A. Transamination

B. Hydroxylation

C. Reduction

D. Decarboxylation

188. Detoxification of drugs is controlled by_____________?
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A. Cytochrome P450

B. Cytochrome A

C. Cytochrome

D. Cytochrome C

189. The major fuel for the brain after several weeds of starvation______________?
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A. Glucose

B. Fatty acid

C. Beta hydroxy butyrate

D. Glycerol

190. Which of the following is present in the plasma but absent in the serum ?
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A. Firbinogen

B. Lecithin

C. Globulin

D. Albumin

191. Examples of monounsaturted fatty acids are______________?
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A. Linolenic acid

B. Oleic acid

C. Palmitic acid

D. Arachitlonic acid

192. Indole ring is present in______________?
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A. Tryptophan

B. Methionine

C. Valine

D. Histidine

193. Iron absorption is decreased in presence of all except____________?
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A. Phosphates

B. Ascorbic acid

C. Tannins

D. Phytates

194. Chargaff rule states that___________?
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A. A+G=T+C

B. A+T=G+C

C. A/T=G/C

D. A=U=T=G=C

195. The process by which a base sequence of messenger RNA is synthesized (by a RNA polymerase) on a template of complementary DNA is called______________?
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A. Translation

B. Transduction

C. Translocation

D. Transcription

196. The following is false about tryptophan_____________?
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A. Non-essential amino acid

B. Involved in serotonin synthesis

C. Involved in melatonin in synthesis

D. Involved in niacin synthesis

197. The normal range of serum osmolality (in mosm/L) is_____________?
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A. 350 to 375

B. 300 to 320

C. 280 to 295

D. 200 to 250

198. Enzymes increase reaction rates by______________?
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A. Decreasing the energy of activation

B. Enhancing the forward reaction

C. Altering the free energy of the action

D. Inhibiting the backward reaction

199. All are true of the genetic code except____________?
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A. Non overlapping

B. Universal

C. Punctuation

D. Degenerate

200. Iron is present in all, EXCEPT______________?
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A. Pyruvate kinase

B. Myoglobin

C. Catalase

D. Cytochrome

Showing 181 to 200 of 448 mcqs