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kirill [66]
2 years ago
10

J.o.i.n.g.u.y.s.acs-meyd-mdf​

Biology
1 answer:
Eva8 [605]2 years ago
5 0

Answer

Hello <em><u> </u></em>

<em><u>How</u></em><em><u> </u></em><em><u>are</u></em><em><u> </u></em><em><u>u</u></em><em><u> </u></em><em><u>doing</u></em>

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In which case would facilitated diffusion be needed?
melomori [17]

Answer:

The voltage-gated potassium channels associated with an action potential provide an example of what type of membrane transport?

A. Simple diffusion.

B.<u> Facilitated diffusion. </u>

C. Coupled transport.

D. Active transport.

You are studying the entry of a small molecule into red blood cells. You determine the rate of movement across the membrane under a variety of conditions and make the following observations:

i. The molecules can move across the membrane in either direction.

ii. The molecules always move down their concentration gradient.

iii. No energy source is required for the molecules to move across the membrane.

iv. As the difference in concentration across the membrane increases, the rate of transport reaches a maximum.

The mechanism used to get this molecule across the membrane is most likely:

A. simple diffusion.

<u>B. facilitated diffusion. </u>

C. active transport.

D. There is not enough information to determine a mechanism.

Carrier proteins - exist in two conformations, altered by high affinity binding of the transported molecule. Moves material in either direction, down concentration gradient (facilitated diffusion). EXAMPLE: GluT1 erythrocyte glucose transporter.

Channel proteins - primarily for ion transport. Form an aqueous pore through the lipid bilayer. May be gated. Moves material in either direction, down concentration gradient (facilitated diffusion). EXAMPLES: Voltage-gated sodium channel, erytrhocyte bicarbonate exchange protein.

This might be helpful... because I don't know anything about facilitated diffusion.

5 0
3 years ago
when you open a solid room air fresher the solid slowly loses mass and volume. how do you think this happens
LenKa [72]
Because the air freshener is being released out in to open, so it spreads everywhere.
Hope that helps :)
8 0
3 years ago
The thick, flat sheet of tendon deep to the scalp is called the
Oxana [17]

Answer:

epicranial aponeurosis.

Explanation:

epicranial aponeurosis.

6 0
3 years ago
Explain how the structure of the cell membrane allows it to be selectively permeable. Make sure to include the specific componen
Liula [17]

the phospholipids are tightly packed togther and the membrane has a hydrophobic interior.

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Which unbalanced equation below describes aerobic cellular respiration
Andrei [34K]
It is C6H12O6+CO2+H20+energy
Hope this helped and be safe
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3 years ago
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