When you touch something hot, a neuron in your finger senses the temperature. which best describes the first reaction the neuron has? a. sodium atoms travel through the veins. b. neurotransmitters cross a synapse. c. an action potential forms. d. ions flow out of the neuron.

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

What organelle other than the nucleus houses dna in a eukaryotic cell?

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d