By the end of a prophase, each of the following has ocurres except a. a tighter coiling of the chromosome b. breaking down of the nuclear envelope c. lining up of chromosomes in the cell d. disappearing of the nucleolus

You arrive late to a biological seminar. however, just as you enter the room, you hear the speaker referring to the "five-prime end" and the "three-prime end" of a macromolecule. immediately, you know that they are talking about a: ]

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences

The tubes transporting minerals and water upward are called ?