6525292
Descrição
Quiz por Nada Medhat, atualizado more than 1 year ago
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Criado por Nada Medhat
aproximadamente 8 anos atrás
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Questão 1
Questão
1- which one of the following statements concerning glycolysis is correct ?
Responda
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a- the conversion of glucose to lactate requires the presence of oxygen
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b- fructose 2.6- bis phosphate is a potent inhibitor of phosphofructokinase
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c- the regulated reactions are also the irreversible reactions
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d- the conversion of glucose to lactate yields two ATP and two NADH
Questão 2
Questão
2- the reaction catalyzed by phosphofructokinase-1 :-
Responda
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a- is activated by high concentrations of ATP and citrate.
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b- uses fructose 1-phosphate as substrate
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c- is the rate limiting reaction of the glycolytic pathway
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d- is inhibited by fructose 2,6- bis phosphate
Questão 3
Questão
3- which of the following statements best describes glucose :-
Responda
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a- it is a ketose and usually exists as a fructose ring in solution
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b- it is a C-4 epimer of galactose
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c- it is utilized in biological systems only in the L-isomeric form
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d- it is produced from dietary starch by the action of alpha amylase
Questão 4
Questão
4- a patient urine is giving +ve Benedict test , but with - ve glucose oxidase test .
the sugar present in urine might be :-
Responda
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a) glucose
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b) sucrose
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c) galactose
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d) starch
Questão 5
Questão
5- Milk intolerance that may follow gastroenteritis is due to loss of which of the following :-
Responda
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a) Amylase
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b) Lactase
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c) Sucrase
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d) Cellulase
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