What defines the difference between benign and malignant tumors? cells in a malignant tumor do not respond to density-dependent inhibition signals while cells in a benign tumor stop proliferating when they reach appropriate density. cells in a malignant tumor do not need to replicate their dna before division while cells in a benign tumor must. cells in a malignant tumor are unable to respond to any extracellular signals while cells in a benign tumor can still respond to some signaling cells in a malignant tumor can survive and proliferate at another site in the body while cells in a benign tumor cannot

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.