Maintaining acidity- <span>In case the pH in the environment drops a lot (becomes very acidic), there is a flux of H ions from the cell's cytoplasm into the cell's vacuole thereby increasing acidity to required level and thus maintaining the </span><span>specific pH </span><span>in the cells internal environment as well.
Turgidity- </span><span>Vacuoles regulate the turgidity by regulating the amount of water inside the cell. </span>
cell has excessive water:<span> vacuole absorbs the water and then diffuses it out of the cell.</span>
cell lacks water<span>: water from the vacuole gets passed back into the cell thereby maintaining turgidity.
And here's a video </span>https://youtu.be/3tqjITi8S8s
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution.
The answer is A. They have a hydrocarbon backbone that can be chemically altered.
Answer:
The correct answer is "sea star living deep in the ocean".
Explanation:
A sea star living deep in the ocean isaAn example of an ectothermic organism that is not able to control its body temperature. However, sea stars are able to sense temperature and have few behavioral options to regulate it. Usually, a sea star lives in waters that are between 72 and 78 degrees Fahrenheit. If the water reaches 88 to 95 degrees Fahrenheit, the sea star responds by shucking their limbs.
