The cell membrane slows the movement of water into or out of the cell and this is vital when treating diseases.
<h3>
What is a cell membrane?</h3>
The cell membrane provides protection for a cell and also provides a fixed environment inside the cell. It transports nutrients into the cell and transports toxic substances out of the cell.
The cell membrane is simply one of the major barriers that pathogens need to conquer e.g. a virus first needs to attach itself to the cell membrane and injects its genetic material into the host cell before replication.
Estrogens passively diffuse across the plasma membrane and then bind to their receptor proteins in the cytoplasm of the target cells.
When estrogen enters the nucleus, it binds to the estrogen receptor, causing it to pair up and form a dimer. Then this dimer then binds to several dozen specific sites in the DNA, strategically placed next to the genes that need to be activated.
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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:
Aerobic respiration<span>, a process that uses oxygen, and </span>anaerobic respiration, a process thatdoesn't<span> use oxygen, are two forms of cellular respiration. Although some cells may engage in just one type of respiration, most cells use both types, depending on an organism's needs. Cellular respiration also occurs outside of macro-organisms, as chemical processes — for example, in fermentation. In general, respiration is used to eliminate waste products and generate energy.</span>
<span>When you are on
standby and it happens that a nearby infant suddenly begins to cough, you need
to give your attention to the infant just to check the infants’ condition. If
you have the medical knowledge, you can assess the infant by checking if there
is an obstruction to his/her mouth and if it is conscious. Then, you can give
sets of 5 back slaps and 5 chest thrusts to remove the object.</span>
Its a solid because it would melt
