A cell membrane is selectively permeable because it only allows particles to move across them due to different concentrations. Molecules move from areas of low concentration to high concentration.The cell needs to control what enters and leaves. It needs to keep somethings in and other things out. However, only the Selectively cells can enter and go out of the cell! This is why the selectively permeable membrane is permeable!
A cell membrane (the outer casing or inner casing in a plant cell) is selectively permeable because some materials can pass freely through the cell membrane while others cannot.
Answer: The Lipid bi-layer of the cellular membrane allows simple molecules to pass through. However, for certain proteins, a special transportation mode is needed.
Answer:
taste and smell
Explanation:
triggers taste
example
hold your nose put a fruit candy in your mouth you will notice there will be a slight different taste
these molecules trigger basic taste
Answer:
Tyrone
Explanation:
Although Dwayne fathered the most cubs, many of these cubs died before reaching adulthood, suggesting they were not genetically fit. Tyrone and George fathered the same number of cubs, but more of Tyrone's cubs survived to adulthood, meaning they are capable of finding a mate and passing their genetic information on to future generations.
Fitness is not related to size.
I cant fully answer, but i know that the phospholipids being amphipathic in nature is important and plays a role in fluidity.