What is a characteristic of cardiac muscle that is not true of skeletal muscle?

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? )

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

How would you expect the mrna codons that code for the amino acids that make up hemoglobin to compare between humans