What is the main function of your kidneys? a: secrete excess water as sweat b: protect against pathogens c: convert waste products into urine d: facilitate gas exchange

Which type of bacterial reproduction is depicted in the diagram?

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

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.