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A bilayer of phospholipids regulates cell traffic. There are five methods of transport across the membrane; diffusion, facilitated diffusion, active transport, co transport and endocytosis/exocytosis.
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∙ 9y ago
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∙ 9y agoCell membranes must control the exchange of nutrients, waste, water, and communication signals. Whether it's one cell or many cells, each cell is completely surrounded by a protective membrane.
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∙ 14y agocancer cells
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∙ 11y agoIt takes place across the cell membrane
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∙ 13y agoacross the cell membrane
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∙ 13y agomembrane
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∙ 13y agoCentriols
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Why is a cell's size limited?
because the diffusion of a cell. and the volume surface area of the cell.
Have very thin walls to allow exchange of materials between blood and body cells?
Capillaries have cell walls that are onlt one cell thich to allow nutrients to pass through and into the body cells and back again. I hope this helps :-)
What is the main function of the cell membrane?
Controls exchange of materials such as nutrients and waste between cells and their environment. Has other important functions for example to enable cells to receive hormones.
How does the movement of materials across the cell membrane relate to an organism's survival?
A cell has to have some thing moving across it or the cell will most certanly die.
What would happen to a cell if materials could not move across the cell membrane?
it will died
What vessels exchange materials with the extra cellular fluid and the blood?
Capillaries. Since they are only once endothelial cell thick, they can exchange gas, nutrients, and waste across their membrane. Capillaries in the brain have endothelial cells close together to onyl allow a slecetive exchange of materials, while capillaries in the kidney or liver have gaps between the endothelial cells to allow the exchange of a lot of materials.
Why can smaller cells exchange materials faster than larger cells?
Because the materials can go through the small cell faster
Why must the cell divide?
Cells Must divide: for health (white blood cells will increase in #'s in response to a virus attack) for regeneration (replacement of aging cells) for growth (accumulation of cells) for repair for differentiation or specialization of cell type reproduction (single-celled) organisms efficiency of exchange of materials across cell membrane
What would happen if materials could not move across the cell membrane?
Isolation. And most materials can NOT move across the cell membrane. (For many things your cells have special proteins within the membrane for transport.)
How does the movement of materials across the cells membrane relate to an organisms survival?
If your cells can't get a steady stream of glucose, the cell will die.
How does the movement of the materials across the cell membrane relate to an organisms survival?
If your cells can't get a steady stream of glucose, the cell will die.
How does the movement of materials across the cell membrane relate to an organisms survival?
If your cells can't get a steady stream of glucose, the cell will die.
How does the movement of materials across the cell membrane related to an organisms survival?
If your cells can't get a steady stream of glucose, the cell will die.
Why is a cell's size limited?
because the diffusion of a cell. and the volume surface area of the cell.
Which body system Transportsneeded materials to the cellsand carrying the wastes away from cells?
The circulatory system - capillaries exchange oxygen for carbon dioxide, as well as transport materials into and out of the cell.
Which organelle helps to maintain homeostasis within a multicellular organism through the exchange of materials with other nearby cells?
what is the organelle that maintains homeostasis by transporting materials throughout the cell
What do plant cells use their different cells parts for?
mitochondria for aerobic respiration. chloroplast (which has chlorophyll) for photosynthesis. cell membrane for exchange of materials. cell wall to maintain the shape of the cell. vacuole for storage of various substance including waste products.
