Answer:
Whether a cell uses facilitated diffusion or active transport depends on the specific needs of the cell. For example, the sugar glucose is transported by active transport from the gut into intestinal epithelial cells, but by facilitated diffusion across the membrane of red blood cells.
Explanation:
The heart, lungs, blood vessels, and blood
Solute is the substance that dissolves
- Solute is a minor component
- Solvent is a major component
- Solutions is a mixture where the solute is uniformly distributed in the solvent.
- Solution is homogeneous mixture that contains particles the size of a typical ion or small molecule.
- The mass of the solute dissolved per unit volume of solvent is called Concentration
- Solubility is The concentration of a saturated solution
- Solutes lower the freezing point and raise the boiling point of a solvent.
- Saturated Solution is a solution in which no more solid can be dissolved
- Unsaturated Solution is solution in which more solid can be dissolved
- Precipitate is a solid that crystallizes out of a saturated solution as it is cooled.
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An action potential involves the transfer SODIUM and POTASSIUM ions across an axon's membrane.
During depolarization, when the ion channels open, they allow the influx of sodium ions into the cell, thus changing the electro-chemical gradient of the cell, in order to counter balance this, potassium ions will be allowed to flow out of the cell.<span />
Microorganisms that are involved in the nitrogen cycle are able to break the triple of elemental nitrogen using special enzymes that they have developed and make ammonium. Other organisms like plants are unable to break the triple bond and therefore rely on these microorganisms so that they can absorb the ammonia
