Sugar is converted into starch when the pH of | vedclass

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Question

(A) According to the starch-sugar interconversion theory proposed by Sayre,the opening and closing of stomata are regulated by the $pH$ of guard cells

Vedclass · Accepted Answer

$H^+$ ions concentration of guard cells decreases

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(A) According to the starch-sugar interconversion theory proposed by Sayre,the opening and closing of stomata are regulated by the $pH$ of guard cells.When the $pH$ of guard cells increases (becomes more alkaline),the enzyme phosphorylase converts glucose$-1-$phosphate into starch,which is insoluble and leads to the closing of stomata.An increase in $pH$ corresponds to a decrease in the concentration of $H^+$ ions in the guard cells.Therefore,sugar is converted into starch when the $H^+$ ion concentration decreases.

Sugar is converted into starch when the $pH$ of guard cells increases,which is associated with:

Similar Questions

$A$: Normal expiration during quiet breathing,unlike inspiration,is a passive process because no muscular contractions are involved.
$R$: Normal expiration results from the elastic recoil of the chest wall and lungs.

Assertion : Inspiration occurs due to muscular relaxation.
Reason : During inspiration,the diaphragm and external intercostal muscle contract simultaneously.

What happens during expiration?

Arrange the given steps of expiration in the sequence of events occurring first:
$I.$ Relaxation of the diaphragm and sternum
$II.$ Reduction of the pulmonary volume
$III.$ Expulsion of air from the lungs
$IV.$ Increase in intra-pulmonary pressure
Choose the correct option.

Which of the following statements is incorrect regarding the human lungs?

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