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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
If a plant of genotype A/a is selfed, and numerous offsprings are scored, what proportion of the progeny is expected to have homozygous genotypes?
Why is a weekly acidic drug best absorbed in an acidic environment?
what are the two main classes into which fish are divided
Briefly describe the principal lines of defence against bacteria entering the blood system. A blood clot forms a barrier to entry by bacteria. White cells ingest and kill bacte
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vulture undergo which type of nutrition
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