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Which of the following are located in the nucleus of atoms?
Protons and Neutrons
Electrons and Protons
Neutrons and Electrons
Protons, Electrons, and Neutrons
All life on Earth is composed mostly of_______.
Elements are pure substances made up of _________ with the same number of protons.
Fats, oils, and waxes are classified as_______.
Amino acids are the building blocks of __________.
_________ are made up of chains of nucleotides.
Atoms that have more electrons than protons are_______.
Which of the following consisits of a sugar, a base, and a phosphate group?
an amino acid
a saturated lipid
_________ causes surface tension in water.
Organisms only need an extremely small amount of _____________.