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True/False :
In a mature human spermatozoan:
1. the middle piece contains the chromosomes.
2. the tail contains the mitochondria.
3. the acrosome is next to the tail.
4. the head contains 46 chromosomes.
5. the acrosome is next to the nucleus, and the head contains 23 chromosomes.

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Respuesta :

Answer:

1. the middle piece contains the chromosomes.  FALSE

2. the tail contains the mitochondria.  FALSE

3. the acrosome is next to the tail.  FALSE

4. the head contains 46 chromosomes.  FALSE

5. the acrosome is next to the nucleus, and the head contains 23 chromosomes. TRUE

Explanation:

The major parts of a mature spermatozoan in human males are the head, middle piece and the tail. The head of the sperm is a flattened and pointed structure that contains a nucleus. There are 23 chromosomes present in the nucleus. Chromosome surrounds the anterior two-thirds of the nucleus. The acrosome is a caplike vesicle and is filled with hydrolytic enzymes that help a sperm during fertilization. The middle piece contains mitochondria that provide the energy (ATP) for locomotion of sperm to the site of fertilization and for sperm metabolism.

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