Dictionary » P » Passive transport

Passive transport

Definition

noun

A kind of transport by which ions or molecules move along a concentration gradient, which means movement from an area of higher concentration to an area of lower concentration.


Supplement

Since the movement of substances is by passive transport, this process does not require chemical energy (in contrast to active transport).

In moving substances across a biological membrane, a passive transport may or may not need the assistance of a membrane protein.

There are four major types of passive transport:


Compare: active transport

See also: concentration gradient


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Results from our forum


Too many ions inside a neuron cell. What happens?

Since it's passive transport, the concentration will never be higher than in extracellular space.

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by JackBean
Tue Feb 25, 2014 9:20 am
 
Forum: General Discussion
Topic: Too many ions inside a neuron cell. What happens?
Replies: 1
Views: 1128

Re: Compare and Contrast Active and Passive Transport?

In active transport mollecules or ions move from at the region of lower concentration to the region ... until concentration becomes equal on both sides.This process require energy(ATP). In passive transport molecules or ions move at the region of higher concentration to the region ...

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by kumar985
Sun Nov 18, 2012 9:12 am
 
Forum: Cell Biology
Topic: Compare and Contrast Active and Passive Transport?
Replies: 6
Views: 11492

Compare and Contrast Active and Passive Transport?

active transport involves usage of ATP molecules \passive transport does not. active transport takes place against conc.gradient\it takes place along the gradient. ...

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by super17
Sat Nov 10, 2012 7:49 am
 
Forum: Cell Biology
Topic: Compare and Contrast Active and Passive Transport?
Replies: 6
Views: 11492

Re: Compare and Contrast Active and Passive Transport?

Nice surprise about this shorter form. Can you tell us what it is you are talking/writing about? Has any info. about this shorter form been posted before (and i just missed it)?

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by angileena
Sat Nov 10, 2012 6:47 am
 
Forum: Cell Biology
Topic: Compare and Contrast Active and Passive Transport?
Replies: 6
Views: 11492

Biochemistry

Quick Question Here... Which type of transport relied on the driving energy of a gradient? a. Active b. Facilitated c. Passive d. Pumped e. ATP mediated

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by snjaved1
Thu Nov 08, 2012 9:16 pm
 
Forum: Molecular Biology
Topic: Biochemistry
Replies: 1
Views: 1244
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