Answer:
Molecules naturally disperse from areas of higher concentration to lower concentration.
As oxygen-rich (and carbon dioxide-poor) blood travels by a cell the oxygen diffuses through the cell membrane to the area of lower concentration inside the cell. It can do this easily because the oxygen molecule (O2) is very small and has no charge or polarity. The oxygen is used up rapidly by mitochondria. This rapid consumption causes oxygen to constantly move into the cell from the blood.
The mitochondria creates carbon dioxide (CO2) as a waste product of cellular respiration (the process that makes energy for your body). Because the CO2 is of a higher concentration in the cell than in the blood passing by, this gas continually diffuses out of the cell. It too is small and uncharged so it can pass through cell membranes easily.
These movements require no energy (in the form of ATP) on behalf of the cell.
Explanation:
Answer:
problems actually start when some of the prion proteins get misfolded into a form that aggregates (the infectious form), which also induces misfolding in the native protein, increasing the amount of aggregates, and inducing more and more of the native form to misfold.
Explanation:
Answer:
Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel. These primary producers form the base of an ecosystem and fuel the next trophic levels.
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A) a spurt in the number of jellyfish because there will be a decreased number of turtles to feed on them
Photosynthesis is a series of chemical reactions that take place in the chloroplasts, which are specialized structures found in plant cells. Through this series of reactions, carbon dioxide and water are converted to glucose and oxygen.
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