What enzyme breaks the hydrogen bonds between bases?
helicase
dna polymerase
amylase
pepsin

About __ of the mass of the cell is water

Approximately percent of the energy created by cell metabolism is used by the body to carry on its normal functions, such as respiration, digestion, reproduction, muscular movement, circulation, and cellular regrowth.

Which type of stimulus do mechanoreceptors detect? sound pain heat light