Juan picks up a steel utensil and immediately drops it because it’s extremely hot. how does the reflex arc work to protect juan from a worse burn?

in a reflex arc, __a__ neuron carries the action potential from the

a. *motor
*relay
*sensory

b. *brain to the spinal cord
*sense organ to the brain
*spinal cord to the muscle

Choose a mutation from those in model 2 that would be neutral for a cell. explain your reasoning by relating the mutation to the cellular respiration process.

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.

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species