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Which one of the following statements about human sperm is correct?
1. Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilisation
2. The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
3. Acrosome serves as a sensory structure leading the sperm towards the ovum
4. Acrosome serves no particular function.
The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
DEMOGRAPHIC CYCLE - 1 . First stage - B high - D high = 0 2 . Second stage - B high - D lo w = G more eg.
Q. Why does not a long lasting vaccine against common cold exist yet? Viruses that present a high mutation rate like the virus that causes the common cold escape easily from th
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