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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?

Options

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

Options

A : lactase

B : EC3.2.1.23

C : both (a) and (b)

D : isomerase

3. Discoloration can be achieved by using

Options

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?

Options

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?

Options

A : Ascorbic acid oxidase

B : Thiaminase

C : Lipoxygenase

D : None of these

6. Juice clarification extraction is facilitated by using

Options

A : cellulases

B : amylase

C : inulinase

D : lactase

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

Options

A : Mg

B : Fe

C : Cu

D : Mn

8. Lysozyme is naturally present in

Options

A : egg white

B : bacteria

C : tears & milk

D : all of these

9. Milk digestibility is improved by using

Options

A : RNase

B : lactase

C : ?-amylase

D : none of these

10. Enzymes act as antimicrobials

Options

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

Options

A : endoenzyme

B : exoenzyme

C : saccharifying enzyme

D : both (b) and (c)

2. Trichoderma ?-glucanase is reported

Options

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)?

Options

A : ?-amylase

B : Gluco-isomerase

C : Gluco-amylase

D : all of these

4. Chymosin hydrolyses the bond between

Options

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

Options

A : ?-amylase

B : cellulase

C : pectinase

D : all of these

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

Options

A : ?-L-rhamonosidase

B : ?-d-glucosidase

C : ?- galactosidase

D : both (a) and (b)

1. Lysozyme

Options

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

Options

A : hersperidinase

B : rnase

C : invertase

D : diacetyl reductase

3. ?-amylase is an endo enzyme which requires

Options

A : Ca

B : Cu

C : Mn

D : None of these

4. Hersperidinase is used for

Options

A : juice clarification

B : juice debittering

C : off flavour reduction

D : RNA reduction in fish

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