<span>ATP is called the energy currency of the cell, and of life, because it is the energy molecule that all cells need in order to do anything within the human body. Themolecule is used like a battery within cells and allows the consumption of one of its phosphorous molecules.
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Answer:
Phylum platyhelminthe
Explanation:
Although a few of the free living marine and terrestrial species are very beautiful, most species are not particularly attractive to the human mind. Their body is dorso-ventrally flattened.
They exhibit bilateral symmetry. They do not have a body cavity and are acoelomate. The movement of most platyhelminthes is using a wavelike motion that is controlled by longitudinal, circular, and oblique layers of muscle as they contract and relax simultaneously.
Acrosome (the head of the male gamete)
If A. is caves then A would be your answer.