If an organism's diploid number is 12, its haploid number is

6

Explanation:

To find the haploid number you divide the diploid number in half, and you get the answer for the haploid number. EX: Diploid number: 78. 78 divide by 2 equals 39. Haploid number: 39

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.

i think its white blood cells

i hope this