Answer:
obviously listening and hearing
In photosynthesis, the movement of protons from the stroma to the thylakoid lumen is proton gradient and is coupled to<u> transfer of </u><u>protons</u>.
Protons are transported across the thylakoid membrane and into the lumen through the electron transport chain (the space inside the thylakoid disk). Protons are simultaneously removed from the stroma by reduction of NADPH and added to the lumen via water splitting (the space outside the thylakoids). Protons are pumped from the stroma to the thylakoid lumen as a result of the electron passing through the first link in the electron transport chain. A fourth protein complex in the thylakoid membrane, ATP synthase, then uses the energy stored in this proton gradient to produce ATP. This protein complex, like the mitochondrial enzyme, links proton flow back across the membrane to the creation of ATP.
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It depends on the organism, they all vary, they can reach up to 90% but I’m not sure so pick C:70%
Ans: maintain homeostasis
Homeostasis is any
self-regulating process by which biological systems tend to maintain stability
while adjusting to conditions that are optimal for survival. It is the stable
state of an organism and of its internal environment. Maintenance of
homeostasis usually involves negative feedback loops. These loops act to oppose
the stimulus, or cue, that triggers them. The stable condition is the condition
of optimal functioning for the organism, and is dependent on many variables,
such as body temperature and fluid balance, being kept within certain pre-set
limits.
