1.3. the model below illustrates a small portion of the molecules that make up a cell structure,
cholesterol
phospholipid

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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