Which cells in your body contain dna

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Which of these is not a nucleotide base found in dna?

Which diagram best represents the chromosomes that would be found in a two new skin cells produced as a result of this process?