According to the who, what percentage of all infectious disease is caused by parasites?

34%

Explanation:

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.