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Enzymes And Application Online Exam Quiz

Important questions about Enzymes And Application. Enzymes And Application MCQ questions with answers. Enzymes And Application exam questions and answers for students and interviews.

1. 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

2. The enzyme ?-galactosidase is also known as


A : lactase

B : EC3.2.1.23

C : both (a) and (b)

D : isomerase

3. Discoloration can be achieved by using


A : sulphloydryl oxidase

B : proteases

C : anthocyanase

D : all of these

4. 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

5. Which of the following enzyme is responsible for causing vitamin B deficiency disease beriberi?


A : Ascorbic acid oxidase

B : Thiaminase

C : Lipoxygenase

D : None of these

6. Juice clarification extraction is facilitated by using


A : cellulases

B : amylase

C : inulinase

D : lactase

7. Which of the following metallic ion is there in ascorbic acid oxidase?


A : Mg

B : Fe

C : Cu

D : Mn

8. Lysozyme is naturally present in


A : egg white

B : bacteria

C : tears & milk

D : all of these

9. Milk digestibility is improved by using


A : RNase

B : lactase

C : ?-amylase

D : none of these

10. Enzymes act as antimicrobials


A : by depriving an organism of a necessary metabolite

B : by generating a substances toxic to the organism

C : by attracting a cell wall component

D : all of the above

1. ?-amylase is


A : endoenzyme

B : exoenzyme

C : saccharifying enzyme

D : both (b) and (c)

2. Trichoderma ?-glucanase is reported


A : to stabilize mashing

B : to convert taste fractions of dextrins to fermentable sugars in beer

C : to convert starch to dextrin

D : all of the above

3. Which of the following mainly serve to convert starch into high fructose corn syrup (HFCS)?


A : ?-amylase

B : Gluco-isomerase

C : Gluco-amylase

D : all of these

4. Chymosin hydrolyses the bond between


A : Alanine and glycine

B : Phenyl alanine and methonine

C : Glutamic acid and alanine

D : Alanine and phenyl alanine

5. Liquefaction of starch to dextrin is carried out by


A : ?-amylase

B : cellulase

C : pectinase

D : all of these

6. The enzyme used to reduce bitterness of grapes commonly contains


A : ?-L-rhamonosidase

B : ?-d-glucosidase

C : ?- galactosidase

D : both (a) and (b)

1. Lysozyme


A : catalyses hydrolysis of ?-1-4 linkages between N-acetyl muranic acid and N-acetyl glucosamine in peptideoglycan

B : catalyses hydrolysis of ?-1-4 linkages between N-acetyl muranic acid and N-acetyl glucosamine in peptideoglycan

C : catalyses hydrolysis of ?-1-4 linkages between N-diacetyl muranic acid and N-diacetyl glucosamine in peptideoglycan

D : all of the above

2. The reduction in off flavour of beer is practiced through


A : hersperidinase

B : rnase

C : invertase

D : diacetyl reductase

3. ?-amylase is an endo enzyme which requires


A : Ca

B : Cu

C : Mn

D : None of these

4. Hersperidinase is used for


A : juice clarification

B : juice debittering

C : off flavour reduction

D : RNA reduction in fish

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