There isn't a single molecule which is metabolized to produce energy, since any organic compounds such as sugars, fats, or proteins may be used. However, the most common one is glucose sugar.
You can differentiate them as vertebrates.
Bats are mammals
Doves are birds
Prokaryotic<span> cells are a group of organisms whose cells don't have a cell, nucleus, or any other membrane bound organelles. A </span>virus<span> is a small infectious agent that can replicate only inside the living cells .</span>
Answer:
D
Explanation:
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