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