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Masteriza [31]
3 years ago
15

What is the most important distinction between the membrane transporters known as channel proteins and those known as carrier pr

oteins?
Biology
1 answer:
-Dominant- [34]3 years ago
6 0

Answer:

Channel proteins form hydrophilic channels to passively transport substances down the concentration gradient.

Carrier proteins bind to substances to transport them actively against the concentration gradient. They do not form channels.

Explanation:

Channel proteins are the membrane proteins that serve in transport of small polar molecules and/or ions by making a hydrophilic pore across the membrane. These molecules diffusion through the pore and exhibit facilitated diffusion.  

Carrier proteins are the membrane proteins that transport the substances across the membrane by binding to them. They do not form the hydrophilic channels. Carrier proteins serve in the active transport of molecules against the concentration gradient.

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Ganezh [65]
External respiration (correct answer) involves the exchange of oxygen and carbon dioxide within the environment.

The exchange of wastes through the skin is just called excretion by sweating. 

There is no exchange of nutrients that occur in the lungs but rather absorption of nutrients is the function of the gastrointestinal tract.

The exchange of oxygen and carbon dioxide within the cell is called cellular respiration and involves carrying oxygen from the blood to the cell then the cell uses it as the final electron acceptor in the electron transport chain. The metabolic wastes of the cell, primarily carbon dioxide, goes now to the bloodstream to be exchanged for oxygen in the lungs.
8 0
3 years ago
What are the independent,dependent, and controlled variables
Marizza181 [45]
A dependent variable is how they are recording, measuring or keeping track of the science experiment their doing.

A independent variable is the things/types there using to compare what is the most/least affective in the experiment.

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8 0
1 year ago
Select all that apply. Cell structures that plant and animal cells don't share are _____.
olga_2 [115]
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5 0
3 years ago
Read 2 more answers
is the fluid portion of a blood sample that has been drawn in the presence of an anticoagulant compound.
Svetlanka [38]

Answer:

Plasma.

Explanation:

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Thus, the answer is plasma.

6 0
3 years ago
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Radda [10]

By conserving the residential water by recycling we can keep the fresh water as a renewable resource.

<u>Explanation:</u>

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3 years ago
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