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Q: What Many substances move through cell membranes from areas of higher concentration to areas of lower concentration in the process of?
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What is osmosis used for?

osmosis is the process of water moving from high concentration to low concentration through semi-permeable membranes. it is used to get water to the plant for photosyntesis


Which molecules help control movement of substances through cell membranes?

proteins help control movement of substances through cell membranes.


What are membranes that allow only certain substances to pass through them?

Semi permeable membranes.


Is facilitated diffusion?

Facilitated Diffusion is the movement of molecules across cell membranes through protein channels and carrier proteins.Facilitated diffusion is a passive transport process, aka no energy required, where substances move down their concentration gradient (high concentration to low concentration) across a protein through a membrane protein because it is unable to diffuse directly through the phospholipid portion of the membrane itself.Diffusion of molecules assisted by protein channels that pierce a cell membrane


What substances that can pass through call membranes by diffusion include?

Oxygen


Membranes that allow only certain substances to pass through are called semipermeable and?

selectively-permeable membrane and the process of this type of diffusion is called fascilitated diffusion


Does a permeable membrane will let substances pass through it?

Yes it does permeable membranes are membranes that allows all substances to pass through.


Name two substances which are moved by active transport through membranes?

Sodium and Potassium. There is something called a sodium-potassium pump which transports 3 ions of Na+ out of the cell and 2 ions of K+ into the cell. This is facilitated by the breakdown of ATP to provide energy.


What regulates the flow of water through a cell membranes?

concentration of water A concentration of solutes regulates the flow of water through a cell membrane.


What are the functions that cell membranes perform?

they help transport some substances through the membrane


What are osmotic gradients?

When water flows from areas of high concentration to areas of low concentration through semi-permeable membranes; down it'd concentration gradient.


What is an example of diffussion in everyday life?

diffussion is an uptaking of substances bycells through their cell membranes