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osmosis
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∙ 11y ago
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Who is helped by the british heart foundation?
its helped by celebrities and they do it for charity
How has Britain helped India?
britain helped india for sucking
Who helped slaves escape to freedom?
It was Harriet Tubman who helped the slaves escape.
What were 5 effects of the revlutionary war?
* It helped people from slavery . * it stoped most taxations. * helped whitesand blacks get alonng. * it helped make peace in some colonys. * it also helped debpters
When south Korea invaded north Korea what country helped?
China helped the North Koreans and NATO helped the South Koreans.
What channel proteins allow water to pass across the membrane?
Aquaporins
Water may move through membrane pores constructed by transmembrane proteins called?
aquaporins
Does transporting aquaporins proteins require ATP?
no
What channels does water cross plasma membranes?
Aquaporins.
Are aquaporins involved in osmosis or facilitated diffusion?
facilitated diffusion
What substance is transported by aquaporins?
The correct answer is water. Aquaporins are a newly discovered class of transport proteins that transport water in cells with very high water permeability needs. - Vance Austin Neely
How does water reabsorption in kidneys occur?
by osmosis through tubular aquaporins
What are membrane proteins that create a passageway across cell membranes?
Aquaporins
Why does water pass quickly through cell?
it moves through aquaporins in the membrane.
What condition might result from an excess of aquaporins?
fluid retention in pregnant woman
What is aquaporins?
Aquaporins are protein molecules embedded in the phospholipid bilayer (cell membrane ) of some cells. They transport water across the cell membrane.
What is the role of aquaporins in a cell membrane?
Aquaporins are protein molecules embedded in the phospholipid bilayer of some cells. They transport water across the cell membrane. A certain amount of water can cross the phospholipid bilayer of the membrane, but aquaporins considerably increase the rate of passage of water. One type of cell in which aquaporins are found is in the epithelium of the human kidney, in the distal and collecting tubules. The antidiuretic hormone (ADH) stimulates epithelial cells to incorporate aquaporins into their membranes, increasing the uptake of water from the tubule into the cells, and therefore increasing the reabsorption of water into the body. Aquaporins are also important in plant cells, facilitating the symplastic movement of water through the plant, i.e. the movement of water from cell to cell via cytoplasm.
