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

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$X - \text{symport}, Y - \text{antiport}$

(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 $antiport$.

Class 11 Biology Transport in Plants Means of transport

Easy

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

A
$X - \text{antiport}, Y - \text{symport}$
B
$X - \text{uniport}, Y - \text{antiport}$
C
$X - \text{symport}, Y - \text{antiport}$
D
$X - \text{uniport}, Y - \text{symport}$

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Class 11

Biology Questions

Chapter

Transport in Plants

Subtopic

Means of transport

Describe the role played by protein pumps during active transport in plants.

Medium

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When does the rate of active transport reach its maximum?

Medium

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Choose the correct sentences for diffusion:
$(1)$ In diffusion,molecules move in a random fashion.
$(2)$ Diffusion rates are affected by the gradient of concentration.
$(3)$ Diffusion is a slow process and is dependent on a 'living system'.
$(4)$ Movement by diffusion is passive.

Medium

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Match the following columns regarding membrane transport mechanisms:

Column-$I$ Column-$II$

$P$. Uniport $I$. $A$ molecule moves across the membrane independent of other molecules.

$Q$. Symport $II$. Two molecules move in opposite directions.

$R$. Antiport $III$. Two molecules cross the membrane in the same direction.

Column-$I$	Column-$II$
$P$. Uniport	$I$. $A$ molecule moves across the membrane independent of other molecules.
$Q$. Symport	$II$. Two molecules move in opposite directions.
$R$. Antiport	$III$. Two molecules cross the membrane in the same direction.

Medium

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State the characteristics of facilitated diffusion.

Medium

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

Similar Questions

Describe the role played by protein pumps during active transport in plants.

When does the rate of active transport reach its maximum?

Choose the correct sentences for diffusion:$(1)$ In diffusion,molecules move in a random fashion.$(2)$ Diffusion rates are affected by the gradient of concentration.$(3)$ Diffusion is a slow process and is dependent on a 'living system'.$(4)$ Movement by diffusion is passive.

State the characteristics of facilitated diffusion.

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Choose the correct sentences for diffusion:
$(1)$ In diffusion,molecules move in a random fashion.
$(2)$ Diffusion rates are affected by the gradient of concentration.
$(3)$ Diffusion is a slow process and is dependent on a 'living system'.
$(4)$ Movement by diffusion is passive.