Name: Cell Membrane Transport
Uploaded: 2019-07-19
Duration: 10 min 50 s
Description: Substances move in and out of a cell through several different processes called membrane transport. Passive and active transport are two types of membrane transport.

Question

Suggest three reasons why exchange between the cell and its environment is essential.

Accepted Answer

The plasma membrane allows the exchange of material between the cell and its environment through some basic mechanisms: diffusion, facilitated diffusion, osmosis, active transport, and bulk transport. The exchange between the cell and its environment is essential for so many reasons, out of which three are listed below.

The exchange of respiratory gasses such as oxygen and carbon dioxide is necessary to regulate cellular respiration and other processes in the body. In plants, stomata carry out such gaseous exchange.

Large biological molecules are hydrolysed to smaller molecules during digestion, which is then absorbed across cell membranes. This type of exchange is necessary to fulfil the daily need for nutrients, perform respiration, etc.

Cells present in the root absorb water and mineral by osmosis and active transport, which is then transported to different parts of the plant.

Mary Jones, Richard Fosbery, Dennis Taylor and, Jennifer Gregory Solutions for Chapter: Cell Membranes and Transport, Exercise 5: Question

Mary Jones Biology Solutions for Exercise - Mary Jones, Richard Fosbery, Dennis Taylor and, Jennifer Gregory Solutions for Chapter: Cell Membranes and Transport, Exercise 5: Question

Questions from Mary Jones, Richard Fosbery, Dennis Taylor and, Jennifer Gregory Solutions for Chapter: Cell Membranes and Transport, Exercise 5: Question with Hints & Solutions

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