Selective permeability, made possible in cells by the phospholipid bilayer that makes up the plasma membrane, is basically monitoring and regulating what can and can't enter the cell. It is carried out by a series of membrane proteins that act as channels to polar molecules, opening to allow them in and closing to prevent their entry. This is possible because the hydrophobic tails of the phospholipid molecules repel polar molecules and so prevent their entry unless through a channel.
Answer:
Community: A group of populations living together and interacting with each other within a given area.
Homeotic genes are master regulator genes that direct the development of particular body segments or structures. ... Most animal homeotic genes encode transcription factor proteins that contain a region called the homeodomain and are called Hox genes.
The answer is differentially permeable or semi-permeable, both are the same meaning. It is usually about cell membrane, and for example osmosis has to occur under this kind of membrane
Answer:
An electrogenic effect
Explanation:
An electrogenic transport is a process where there is a translocation of net charge across the membrane. E.g of electrogenic channels are Na+, K+, Ca2+, and Cl− channels.
