How does pressure exerted in a gas affect it’s volume?

Aneuron is stimulated with an electric pulse. the action potential is detected at a point 3.70 cm down the axon 0.0052 s later. when the action potential is detected 7.20 cm from the point of stimulation, the time required is 0.0063 s. what is the speed of the electric pulse along the axon? (why are two measurements needed instead of only one? )

What is the next step in muscle contraction after the actin changes shape? (apex)

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.