Answer:
Because of the chemical and structural nature of the phospholipid lipid by layer the lipid soluble molecule can just pass the lipid membrane and some small molecules can also pass freely.
Explanation:
as we know that the homeostasis is an important process for a living cell to maintain it self so for the the exchange of materials between the external and internal environment is must so for that it exchange material with the outside environment of the cell.as the cell membrane is semipermeable(mean allow some molecule to pass(lipid soluble) and not others(lipid non soluble) to pass through the membrane.the cell membrane is selectively permeable due to its nature and chemical composition the chemical composition is lipid and phosphate and glycerol(head) with fatty acid that may b saturated or unsaturated(tail).so finally all those molecule which are polar can not pass through the membrane and non polar can pass the membrane.The size of the molecule is also a factor on which the permeability depends.
Answer:
All the soil remains wet for several days after a heavy rain. Most of the grass is blown flat by a strong wind. Many grass plants die after a long period of no rainfall
Explanation:
The frequency of the homozygous dominants will go down, the
frequency of the heterozygous genotype will go down, and the frequency of the
homozygous recessives will go up. This is because the hunting by the humans
reduces the population of individuals with the dominant trait and reduces their
chances of reproduction and the passing of their genes to the subsequent
generation.
Answer:
rift valley
Explanation:
when two plates spread apart or diverge they create a valley
