Q: Q: A nerve cell that carries messages is called a? Choices: - mitochondria - stem cell - platelet - neuron A:
A: neuron

Q: Q: On what basis are lipoproteins classified? Choices: - diameter - mass - weight - density A:
A: density

Q: Q: In classical physics, momentum is a simple product of mass and this? Choices: - acceleration - speed - direction - velocity A:
A: velocity

Q: Q: What is the study of the interaction between matter and energy called? Choices: - astronomy - climatology - geology - chemistry A:
A: chemistry