In a X, both molecules cross the membrane in | vedclass

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(C) In facilitated diffusion, some carrier proteins allow transport only if two types of molecules move together.$1$. In a $symport$, both molecules c

Vedclass · Accepted Answer

$X - 	ext{symport}, Y - 	ext{antiport}$

Vedclass · Answer

(C) In facilitated diffusion, some carrier proteins allow transport only if two types of molecules move together.$1$. In a $symport$, both molecules cross the membrane in the same direction.$2$. In an $antiport$, the molecules move in opposite directions.$3$. In a $uniport$, a molecule moves across a membrane independent of other molecules.Therefore, $X$ is $symport$ and $Y$ is $antiport$.

Property	Simple Diffusion	Facilitated Transport	Active Transport
Transport Saturation	$P$	Yes	Yes
Uphill Transport	No	No	$Q$
Requirement of Energy	No	$R$	Yes

In a $X$, both molecules cross the membrane in the same direction; in an $Y$, they move in opposite directions.

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Choose the correct option for $P, Q$ and $R$.
Property Simple Diffusion Facilitated Transport Active Transport
Transport Saturation $P$ Yes Yes
Uphill Transport No No $Q$
Requirement of Energy No $R$ Yes

$P, Q$ and $R$ respectively are:

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