Answer:
A proton gradient is generated by the transport of protons into the thylakoid lumen.
Protons move from the thylakoid lumen to the stroma through ATP synthase, producing ATP.
Explanation:
During photosynthesis, the environment is made acidic inside the lumen i.e. H⁺ are pumped into thylakoid lumen from stroma as a result of which more H⁺ are present in the thylakoid lumen as compared to stroma. It happens during light dependent reaction of photosynthesis. The concentration of H⁺ is already higher in lumen and transfer of more and more H⁺ from stroma increases the concentration of H⁺ even more leading to generation of a potential gradient. These H⁺ subsequently tend to move freely from lumen to stroma via "reverse pumps known as ATP synthase". The reason why these are known as reverse pumps is because pumps usually move particles from lower to higher concentration which is an active movement i.e. not natural so such movement requires energy. Naturally particles move from higher to lower concentration gradient until the concentration becomes equal on both the sides but pumps act opposite of this natural process and move particles from lower to higher concentration and utilize energy to do it. But here H⁺ are moving from higher to lower concentration which occurs naturally so ATP synthase rather than using energy tend to generate energy and this free energy is used to generate ATP from ADP & Pi (inorganic phosphate).
Answer:
light dependent reactions occur at the lumen of the thylakoids present in the chloroplast.
<h2>Specialists and Generalists </h2>
Explanation:
Niche is the role played by an organism that how it lives in an environment
Specialists
- Species that have narrow niches are called specialists and this type of niche is called realized niche
- It is narrow because of the presence of ecological barriers and is the space where a species actually lives
Generalists
- Species that have broad niche are called generalists and this type of niche is called fundamental niche
- It is larger than the realized niche due to absence of ecological barriers
- It represents all the environmental conditions where a species is able to live or can live
Answer:
Option B is correct.
Explanation:
There are <u>thousands</u> of proteins and only 20 amino acids.
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