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agasfer [191]
3 years ago
12

All models have limitations

Biology
1 answer:
ale4655 [162]3 years ago
6 0
That is true, you limit on what you can do with them.
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This type of membrane transport moves substances against the concentration gradient from an area of low concentration to an area
sashaice [31]

<u>Answer</u>:- Active transport

<u>Explanation</u>:-

There are two types of membrane transports

1. Passive transport - this type of transport occurs without the input of any energy and the molecules move along the concentration gradients that is from <em>high concetration to low concentration.</em>

2. Active transport- this type of transport takes place to move the molecules against the concentration gradient that is from <em>low concentration to high concentration.</em>

<em>The active transport is of two types:</em>

1. <em>Primary active transport-</em> in this type of transport <em>ATP</em> is used as an energy source to move the substances against the concentration gradient.

2.<em>Secondary active transport</em> - in this type of transport the gradient formed by the active transport is utilized and it involves the movement of 2 substances at a time aross the membrane. That is the movement of one molecule is coupled to another.


  • The membrane proteins that are associated with active transport are called as <em>carrier proteins</em>. These proteins have a binding site for the molecules that they transport. Once they bind to the specific molecules, a conformation change is induced and this leads to the transport of the molecule across the membrane.

So, the <em>active transport is basically responsible for utilizing the energy from ATP and carrier proteins to move the substances across the membrane against their concentration gradient i.e. from low concentration to high concentration.</em>

5 0
3 years ago
What is the advantage of using an iodophor rather than iodine or an iodine tincture?
siniylev [52]

Explanation:

Iodophor -

Iodophor is a complex of iodine , with solubilizing agents , such as the povidone , surfactant .

And forms a water - soluble material which can release free iodine in the solution phase .

Dilute form of  iodophor is  used by winemakers and brewers to sanitize their equipment and bottles .

The major advantage of iodophor over other is that , it increases the stability of iodine .  

7 0
3 years ago
Many farmers in less densely populated areas, such as amazonia, practice _______________, also known as shifting cultivation or
Norma-Jean [14]
Many farmers in less densely populated area, such as Amazonia, practice slash and burn agriculture, also known as shifting cultivation or swidden agriculture where an area is cleared and then burned for the vegetative remains to release nutrients back into the soil. Shifting cultivation is a system where a farmer uses a piece of land, only to abandon or alter the initial use a short time later. Advantages of shifting cultivation includes; enhance control of pest and disease, inorganic matter addition which provide nutrient to crop, an effective way of weed control
7 0
3 years ago
Which pair shares the same function?
kirza4 [7]

the answer is b

Explanation:

8 0
3 years ago
Help me plss!!!! I don’t understand it!
Naily [24]

Answer:

water fleas

Explanation:

the fish eat tht water fleas for energy...

4 0
3 years ago
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