Q: When blood vessels in the head dilate, what kind of severe headache can occur? Choices: - malignant - chronic headache - tension headache - migraine A:
migraine

(Question)
Q: Temporal and spatial summation at the axon hillock determines whether a neuron generates what? Choices: - hidden potential - change potential - false potential - action potential A:
(Answer)
action potential

Ques: Q: What is used to recrystallize excess dissolved solute in a supersaturated solution? Choices: - starter crystal - energy crystal - fertilizer crystal - seed crystal A:
Ans: seed crystal

(Q).
Q: Upon reaching the postsynaptic membrane, what type of chemical messenger binds to and activates a specific receptor? Choices: - hormone - neuropeptide - pheromone - neurotransmitter A:
(A).
neurotransmitter

Ques:Q: What is a compound in which all of the atoms are connected to one another by covalent bonds? Choices: - covalent bond element - covalent mixture - compound metal - covalent network solid A:

Ans:covalent network solid

Question: Q: Does an increase in temperature speed up or slow down reactions? Choices: - end reaction - slow down - remain the same - speed up A:
Answer:
speed up