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1. How many nuclei does each cell have?
2. Most cells have 3 parts. Name them
and

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?