The answer is b had it before chose c but that didnt made senc at the time
The correct answer is A I believe
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:
Nocturnal animals are important pollinators. What niche do they specifically fill? They eat the nectars of angiosperm flowers.
Explanation:
The answer is In the last trimester of pregnancy. While the senses
of the fetus start to develop in the 8th week, the different sense mature
at different stages. Vision is the last sense to mature. After the 26th
week, after the eyelids of the fetus have
fully developed, the fetus begins to blink (even experience REM while involves rapid
eyelid movements ).
