What is in the cells of plants and in animals and all other eukaryotes

eukaryote is any organism whose cells have a cell nucleus and other organelles enclosed within membranes. Eukaryotes belong to the domain Eukaryota or Eukarya, and can be single-celled or multi-cellular.

Or:

Eukaryotes are made up of eukaryotic cells. Eukaryotic cells contain a nucleus and membrane-bound organelles.

b is dominant over the allele for the white fur.

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.