A sperm cell's structure is very specialized. Its flagellum is used for locomotive function, to rapidly swim directly through the egg cell. While the cytoplasm, it contains organelles, such as the Mitochondria, wherein respiration occurs, to release the energy needed for the sperm's journey towards the egg cell. Sperm cells, contain special enzymes known as acrosomes, this special enzymes allows the sperm to break through the cell membrane of the egg.
You must just analyze the words. Replication is a synonym of copy, so the only possible answer is C.
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Answer:
They are located in the ribosomes.
Glucose and oxygen!!!
CO2 + Water in the presence of sunlight results in glucose + oxygen
are in 
we can simply divide 
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