Answer:
C. Osmosis
Explanation:
Osmosis is the net movement of solvent molecules, usually water, from a region of lower solute concentration to a region of higher solute concentration through a partially permeable membrane. Osmosis is a very useful for moving materials in and out of the cell.
Solutions are mixtures of solutes and solvents. The main aim of osmosis is for all the mixture part to be uniform and the solvent equally dispersed to all the part of the solution.
Osmosis is controlled to a large extent by concentration gradient.
Diffusion on the otherhand is the movement of molecules of a substance from one position to another.
Facilitated diffusion and active transport are just mechanisms for transport within a cell or a body.
3.13 x 10 ^9
This is because only 1 number is front of the decimal and 2 numbers should be after
If he studied a small sample it wouldn't be a representative sample. since he got such a large sample there is a chance most likely all organisms follow the rules of evolution.
carbohydrates
fats
proteins
fiber
vitamins
water
Minerals
Explanation:
Food is complex of different minerals. These minerals helps to meet our body demand for materials important for sustenance.
There are different classes of food based on their chemical properties and functions. These classifications are based on the complex nutritive substances that can be derived from them.
- Carbohydrates supplies energy to the body.
- Proteins also provides energy and it helps to repair worn out body tissues.
- Fibers are needed to aid digestion
- Vitamins provides enzymes for the body
- water is an essential life compound.
- Minerals are used for several metabolic processes and they are good electrolytes in the body.
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