The pituitary gland is located in the brain and controls .A. skin conditionsB. the rest of the endocrine glandsC. the regeneration of nerve cellsD. involuntary motor skills

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

Some substances but not other can cross the (blank) membrane of a cell

Why does sexual reproduction result in more genetic variation in a species