The difference in concentration between solutions on either side of a cell membrane is a concentration gradient.
In the field of biology, a concentration gradient can be described as a difference in the concentration of molecules inside and outside of a cell. It is due to concentration gradient that molecules move into and out of a cell through the cell membrane.
Some molecules move from an area of higher concentration gradient to an area of lower concentration along the concentration gradient. Diffusion is an example of such a process.
On the other hand, some molecules move from an area of lower concentration to an area of higher concentration against the concentration gradient. Active transport is an example of such a process.
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Answer:
Cystitis is most often caused by <em>Escherichia coli.</em> It is a urinary tract infection and can occur due to sexual intercourse too. Women suffers with cystitis more than men as women have shorted urethra and bacteria reaches the bladder faster.
Explanation:
Cystitis is caused by bacteria <em>Escherichia coli </em>and lead to swelling of the bladder. It can also lead to irritation and damage to the bladder. The infected person has the urge to urinate more frequently and has the burning sensation. Cystitis can lead to complications such as blood in the urine and kidney infection. The other types of cystits are drug-induced, intestinal, radiation, and chemical cystitis. It can also develop as a result of diabetes, and kidney stone.
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The correct answer is: D) H2O… CO2
Redox reactions are reactions of reduction (molecules tend to gain electrons) and oxidation (molecules tend to lose electrons).
Photosynthesis is a set of redox reactions. In photosynthesis electrons are removed from water (H2O) to carbon dioxide CO2 and then used to turn CO2 into organic compounds.
The first step: Oxygen in water is oxidized (light energy required)
The second step: Carbon in CO2 is reduced; sugar is formed (dark reaction).
Answer:
D
Explanation:
all living things are made up of many cells
