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Mouth, Teeth and Salivary Gland

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Question

Find out the correct sequence of substrate, enzyme and product

A

S m a l l i n t e s t i n e : P r o t e i n s p e p s i n - --- \to A m i n o a c i d s

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B

S t o m a c h : F a t s L i p a s e - --- \to m i c e l l e s

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C

D u o d e n u m : T r i g l y c e r i d e s t r y p s i n - --- \to M o n o g l y c e r i d e s

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D

S m a l l i n t e s t i n e : S t a r c h a - a m y l a s e - ----- \to M a l t o s e

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Solution

The correct option is D $S m a l l i n t e s t i n e : S t a r c h a - a m y l a s e - ----- \to M a l t o s e$
The saliva contains an enzyme called salivary amylase which hydrolyses starch into maltose. The complete digestion of starch occurs only in the small intestine by the action of pancreatic amylase. The activity of enzymes is strongly affected by several factors, such as temperature and pH.

So, the correct option is 'Option D'.

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Similar questions

Q. The catalytic cycle of an enzyme action can be described by the steps given below:

(A) The active site of enzyme, now in close proximity of the substrate, breaks the chemical bonds of the substrate and the new enzyme-product complex is formed.
(B) The binding of the substrate induces the enzymes to alter its shape, fitting more tighty around the substrate.
(C) The substrate binds to the active site of the enzyme, fitting into the active site.
(D) The enzyme releases the products of the reaction and the free enzyme is ready to bind to another molecule of the substrate and run through the catalytic cycle once again.

Arrange them in the correct sequence.

Q. Find out the incorrect combination of enzyme, source, substrate and product obtained :-

	Enzyme	Source	Substrate	Product
(1)	pepsin	Stomach chief cells	Protein	proteoses, peptone
(2)	Amino peptidase	small intestine	peptide	dipeptide, AA
(3)	Enterokinase	small intestine	Trypsin	Trypsinogen
(4)	$α -$ Amylase	sallvary glands	starch	Maltose

Q. A child took sugarcane and sucked its juice. Regarding this which of the following match is correct?
Substrate Enzyme Site of secretion of enzyme Products formed

Q. Assertion :Each enzyme has a substrate binding site in its molecule which forms highly reactive enzyme- substrate complex. Reason: The enzyme-substrate complex is long- lived and dissociates into its product and unchanged enzyme.

Q. Arrange the steps of catalytic action of an enzyme in right order and select the correct option.
(i) The enzyme releases the products of the reaction and the enzyme is free to bind to another substrate.
(ii) The active site of enzyme is in close proximity of the substrate and breaks the chemical bonds of the substrate.
(iii) The binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate.
(iv) The substrate binds to the active site of the enzyme fitting into the active site.

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