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solve the questions

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1 solve the questions on Sat Jul 09, 2011 11:52 am

amy

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Doctor
The glycolytic pathway requires which of the following allosteric regulatory enzymes ?
(A) Glucokinase, Phosphofructokinase and pyruvate kinase
(B) Hexokinase, Aldolase and Pyruvate kinase
(C) Hexokinase, glyceraldehydes 3- phosphate dehydrogenase and enolase
(D) Hexokinase Phosphofructokinase and pyruvate kinase
The synthesis of 1,25 dihydroxycholecalciferol takes place :
(A) In the skin under the action of ultra violet light from 7-dehydrocholesterol
(B) In the liver from Cholecalciferol
(C) In the kidney from 25-hydroxycholecalciferol
(D) In the intestine from Cholecalciferol.
Quantitatively the most important enzyme involved in generating Ammonia from Aminoacids in human is:
(A) Alpha-amino acid oxidase
(B) C-Arginase
(C) Glutamate dehydrogenase
(D) Glutamine synthetase
To what metabolic intermediate is ethanol normally converted ?
(A) Pyruvate
(B) Acetyl CoA
(C) Glucose
(D) Phosphoenol pyruvate
Which of the following statement is correct ?
(A) The Alpha helix can be composed of more than one polypeptide chain.
(B) Beta-sheets exist only in the anti-parallel form
(C) Beta bends often contain proline
(D) Domains are a type of secondary structure
All of the following are features of Homocystinuria, except:
(A) Accumulation of homocystine occurs in the urine
(B) Elevation of Methyl Malonyl CoA occurs
(C) It is due to the Deficiency of Cystathionine synthase
(D) Mental retardation, Osteoporosis, myocardial infarction and Characteristic dislocation of the lens.

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