Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: Phosphate groups are found within phospholipids and nucleotides.

A: Phosphate groups are found within phospholipids and what else?
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Q: When a sperm penetrates the egg, it triggers the egg to complete meiosis.

A: When a sperm penetrates the egg, it triggers the egg to complete what?
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Q: Reptiles are a class of tetrapod vertebrates that produce amniotic eggs called.

A:
What are a class of tetrapod vertebrates that produce amniotic eggs called?
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