Viruses seem to be made of nucleic acid like the dna shown here, and coated by a layer of a). starch b). protein c). sugar d). fat

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

What is the difference between bacterial infections and viral infections?

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.