Answer:
980
Explanation:
Because if the bacterium doubles every 20 mins it will multiply 7 times to get to 140 mins.
I hope this was right. Have a nice day! <3
Answer:
they are of the same genus but not of the same species and therefore they cannot mate to give rise to fertile off springs only organisms from the same species are able to give rise to fertile offsprings
Answer:
It grows, what else (jk)
Explanation:
As a cell grows bigger, its internal volume enlarges and the cell membrane expands. Unfortunately, the volume increases more rapidly than does the surface area, and so the relative amount of surface area available to pass materials to a unit volume of the cell steadily decreases.
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.
