A)Protein-amino acids
B)Nucleic acids-nucleotides
C)Polysaccharides - simple sugars
D)Fats-aldehyde

A)carbon-organic compounds
B)glucose- hydrogen bonds
C)ions-covalent bonds
D)phosphate-enzyme

A)Radioisotopes have unstable nuclei that emit subatomic particles and radiation.
B)All radioisotopes have gained electrons.
C)Radioisotopes are useful to guard against radioactive elements.
D)Radioisotopes contain particles too large to form true solutions.