The brain and nervous system function essentially as an information processing system, powered by electrical impulses and chemical messengers. When an impulse travels down a neuron, it does so electrically. When that impulse gets to the end of the line, it communicates with the next neuron using .

What type of cell is produced after fertilization occurs and the gametes combines ?

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

Vessels draining the myocardium of the heart, open primarily ,into which chamber?