The division of the cytoplasm takes place after or at the end of
1) mitosis
2) the synthesis stage
3) the gap2 stage
4) interphase

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? )

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.