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What motion of particles across a membrane requires energy?
Movement across a membrane that does require energy is called active transport.
What hormone aids the diffusion of glucose across the cell membrane?
Insulin is the hormone that aids in the diffusion of glucose across the cell membrane by facilitating the uptake of glucose into cells, particularly in muscle and fat tissue. In the absence of insulin or in conditions of insulin resistance, glucose uptake is impaired, leading to high blood sugar levels.
Does osmosis or facilitated diffusion require the presence of membrane channels?
Facilitated diffusion requires the presence of membrane channels or transporters to move molecules across the membrane. Osmosis, on the other hand, does not require membrane channels as it involves the passive movement of water molecules through the lipid bilayer of the membrane.
Carrier proteins do not require energy to transport amino acids into a cell?
Carrier proteins facilitate the movement of amino acids across the cell membrane through facilitated diffusion, which does not require energy input. This process relies on the concentration gradient of amino acids across the membrane.
A nonsteroid hormone enters a target cell by passing across its cell membrane?
The nonsteroid hormone binds to a receptor on the cell membrane, triggering a signaling cascade inside the cell without needing to enter the cell itself. This cascade leads to various cellular responses and changes in gene expression. This mechanism allows for rapid and precise cellular responses to the hormone signal.
Does facilitated diffusion require energy for the movement of molecules across the cell membrane?
No, facilitated diffusion does not require energy for the movement of molecules across the cell membrane.
Does facilitated diffusion require energy for the transportation of molecules across the cell membrane?
Facilitated diffusion does not require energy for the transportation of molecules across the cell membrane.
Does facilitated diffusion require energy to transport molecules across the cell membrane?
Facilitated diffusion does not require energy to transport molecules across the cell membrane.
Does passive transport require ATP for the movement of molecules across the cell membrane?
No, passive transport does not require ATP for the movement of molecules across the cell membrane.
Does facilitated transport require energy for the movement of molecules across the cell membrane?
Yes, facilitated transport does require energy for the movement of molecules across the cell membrane.
Why is a second messenger not necessary in a steroid hormone?
Steroid hormones act in the transcriptional level in the nucleus of a cell, due to their ability to travel through cell membranes (hydrophillic). Second messengers are necessary for hormones that cannot penetrate cell membranes (peptides).
What are the types of membrane transport across the cell membrane require a protein carrier?
The brain
What kind of transport across membrane does not require energy?
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Does facilitated diffusion require a transport protein for the movement of molecules across the cell membrane?
Yes, facilitated diffusion does require a transport protein for the movement of molecules across the cell membrane.
What motion of particles across a membrane requires energy?
Movement across a membrane that does require energy is called active transport.
What require the use of energy to move a molecule across a cell membrane?
Active transport
What does gas exchange across a membrane require?
Gas exchange across a membrane requires a concentration gradient of the gases involved, a permeable membrane that allows for the passage of gases, and a surface area large enough to facilitate the diffusion of gases. Additionally, a mechanism such as diffusion or active transport is necessary to facilitate the movement of gases across the membrane.
