What is the natural tendency of molecules To spread To spread from an area of high concentration to an area of low concentration

What is a gene ? a) a section of a protein that codes for dna. b) the alternate version of a trait. c) the visible trait in the f1 generation. d) a section of dna that codes for a specific trait .

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

In an hydrogen ion pump the energy is used to join small molecules together to make larger ones which factor most likely has the greatest effect on the number of molecules mitochondria can produce