Zinc is important for the regulation of:

a) Cholesterol absorption and storage
b) Muscle contraction and relaxation
c) Gene expression and protein structure
d) Oxygen uptake and transfer

How do the uv rays cause damage?   what exactly causes the skin to burn;   can you be more specific about this mechanism?   3. how do photosensitive medications increase a person's sensitivity to sunlight and therefore increase their risk of getting burned?     what kind of medications can increase photo-sensitivity, can you think of some examples?

Excess cells due to an increased rate of cell division is termed: hypercytosis hyperchondria hypertrophy hyperplasia

Arah is eating lunch with friends outside in the commons area of her school. one of sarah’s friends offers to share a marijuana joint with her. what could be the outcome if sarah were caught smoking marijuana at school? nothing will happen because she did not buy the joint. she could be suspended from school. nothing will happen because she is underage. the consequences would be up to sarah’s parents.