Estrogens are hormones that are play important roles in the reproductive system.
<h3>What are the roles played by estrogen?</h3>
The environmental estrogen introduced to the male cells has the ability to recognise the binding sites of the receptors on the male cells.
They are able to attach the the cell membranes by its ability to bind to the cell receptors.
When the binding occurs, there would be a conformational change within the cell leading to:
- modulation of protein synthesis and
- development of the female secondary reproductive characteristics.
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Explanation:
A balanced diet is a diet that contains all the classes of food in the right proportion. They are made up of the essential elements needed for nutrition by the body.
Someone might tend to not to choose a diet that addresses all of the essential element because:
- such diet might not be palatable to them. People often tend to eat more food that are sweet and pleasant to taste. Some food that contains essential elements might not just be good to taste.
- Also, due to some health conditions, Doctors might restrict a patient from consuming a particular type of food.
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Redi carried out his experiment in the year 0f 1668
Answer:
D. It keeps the temperature lower for sperm development
Explanation:
<u>Semineferous epithelium ,of the seminiferous tubules, of the testis is the site of sperm production (Spermatogenesis) , and highly sensitive to elevated and fluctuating body temperature of man. Elevated temperature affect the survival of spermatids , the spermatozaon, and therefore affects spermatogenesis</u>.
To avoid this the testis is located outside the body in the scrotal sack.This positioning aids shielding away of the elevated body temperature; thereby survival of spermatozoan.
The attachment in the scrotal sack is done by the cremasteric muscles of the scrotum. This muscle positions the testis in the best angle to reduce temperature conduct from the body.
It also help by contracting and relaxing, to adjusts the temperature of the testis depending on the environmental temperature.During cold showers,it constricts pulling it close to the abdomen, and after, relaxes returning it to normal position.
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