Steps of transportation in order

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? )

Why is it incorrect to say that mitochondria function only as energy factories with cell

Thyroid-stimulating hormone stimulates the thyroid gland to secrete sex hormones. true or false