There are 3 methods that materials are transported across cell membranes in basic. Diffusion, osmosis and active transport.
In diffusion, the net movement of fluid is from a region of higher concentration to lower concentration, down the concentration gradient , resulting from the random movement of particles. They do not require extra energy and there will be no more net movement when both sides has a equal concentration.
For osmosis, its the net movement of water molecules only from a region of higher water potential to lower, down the concentration gradient, but must be through a semi permeable membrane (cell membrane in this case). Also, it doesn't require extra energy.
And for active transport, it's the movement of particles against the concentration gradient, by using extra energy provide from for example cellular respiration. It also requires protein carriers.
The correct answer should be A) Cell theory explains cell behavior where a law would describe it
Theories are used to explain phenomena, while laws just describe what will always happen. Such as the law of thermodynamics that describes what is going on inside a room when heat leaves it.
Death. On 14 February 2003, Dolly was euthanised because she had a progressive lung disease and severe arthritis. A Finn Dorset such as Dolly has a life expectancy of around 11 to 12 years, but Dolly lived 6.5 years.
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Answer:
3f3 a job 4th in the world and the 44 year old has 444t46565y43 and the y5r 5 is 46th 75 to be 5th in 355756th to
D is the answer because carbondioxide and oxygen are both needed for plants or green plants to survive.
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