It'd be the second answer, a virus, which attacks the white blood cells.
The first step is The replication fork forms (d)
Answer:
The binding of ACh to the muscarinic receptor indirectly affects the permeability of K⁺channels. This can produce hyper polarization in some organs if channels are opened, and depolarization in others if channels are closed.
Explanation:
For example, in the heart it is the beta-gamma compound that fixes to the K+ channels of heart muscle and sources them to exposed. This leads to K+ dispersion out of the cell and the cell converts into hyper polarized consequential in a reduction in heart rate. In contrast, in smooth muscle of the stomach the alpha sub unit fixes to K+ channels producing them to close. This decreases the external diffusion of K+ and the cell converts depolarized ensuing in smooth muscle contraction.
Answer:
Seeds disperse in four main ways, by air, water, animals and self propulsion:
Wind dispersal. Wind can carry seeds away from their parent plant.
Water dispersal. A few species use water to disperse their seeds.
Animal dispersal. Animals find fruits a rich source of food and as a result aid seed dispersal.
Explosion.
Explanation:
Stream channeled flow of water,regardless of size
