The electrons of an atom Select one:
a. have a positive charge.
b. are attracted to the positive charge of neutrons.
c. orbit the nucleus in various energy levels.
d. are found in the nucleus along with the protons.

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

What condition is kept close to its set point in osmoregulation? a. body temperature b.platelet count c.blood glucose level d.water balance

What is the role of dna ligase in the elongation of the lagging strand during dna replication?