200 Best MCQs on Enzymes and Applications- biochemical engineering
Q9). Liquefaction of starch to dextrin is carried out by
a).α-amylase
b).cellulase
c).pectinase
d).all of these
Correct Answer:
α-amylase
Explaination:
Q10). Which is true about rennet?
a).It is a mixture of protease chymosin and pepsin
b).It is a mixture of rennin and pepsin
c).Both (a) and (b)
d).none of the above
Correct Answer:
Both (a) and (b)
Explaination:
Q11). Milk digestibility is improved by using
a).RNase
b).lactase
c).β-amylase
d).none of these
Correct Answer:
lactase
Explaination:
Q12). Which of the following mainly serve to convert starch into high fructose corn syrup (HFCS)?
a).α-amylase
b).Gluco-isomerase
c).Gluco-amylase
d).all of these
Correct Answer:
all of these
Explaination:
Q13). Lysozyme
a).catalyses hydrolysis of β-1-4 linkages between N-acetyl muranic acid and N-acetyl glucosamine in peptideoglycan
b).catalyses hydrolysis of α-1-4 linkages between N-acetyl muranic acid and N-acetyl glucosamine in peptideoglycan
c).catalyses hydrolysis of α-1-4 linkages between N-diacetyl muranic acid and N-diacetyl glucosamine in peptideoglycan
d).all of the above
Correct Answer:
catalyses hydrolysis of β-1-4 linkages between N-acetyl muranic acid and N-acetyl glucosamine in peptideoglycan
Explaination:
Q14). Hersperidinase is used for
a).juice clarification
b).juice debittering
c).off flavour reduction
d).RNA reduction in fish
Correct Answer:
juice clarification
Explaination:
Q15). Which of the following metallic ion is there in ascorbic acid oxidase?
a).Mg
b).Fe
c).Cu
d).Mn
Correct Answer:
Cu
Explaination:
Q16). Which of the enzyme combination is commercially used for the removal of oxygen?
a).Glucose oxidase-cellulase
b).Glucose oxidase-catalase
c).Glucose oxidase-lactase
d).All of these
Correct Answer:
Glucose oxidase-catalase
Explaination: