This is because the melanocytes are located in the stratum basale. Lighter-skinned people usually have low basal levels, and exposure to UV radiation causes an increase which makes skin darker.
1.) It is True that when a cell is put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane.
2) It is False that a when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell.
3) It is True that when a cell is out into a hypotonic solution, there is net movement.
4) It is False that the movement of any solvent across a semi-permeable membrane is called osmosis.
Answer:
The person would be more prone to illness
Explanation:
White blood cells are also known as Leukocytes. (which is where the name Leukemia came from) They help protect the body from illnesses and foreign invaders by engulfing and destroying them. If the body cannot create enough white blood cells, then there are less cells to fight off infection.
