Explain Sperm
Explain the term Sperm. Also describes its structures with the help of diagram.
Expert
The sperm cell is the smallest of all human cells – to give you an idea of how small they are – there are 60 to 90 million (yes, million) sperm in a single millilitre of what exits the man’s body as semen. If this number falls to below 30 million the man is said to have a low sperm count – if it falls to 10 million or lower the man is said to be infertile. A man produces over 100 million sperm cells each day. The sperm’s average length is about 0.05 mm and consists of three main parts: the head, the midpiece or body and the tail.
The tip of the head has a cap called an ACROSOME which contains digestive enzymes. After the sperm has entered the vagina of the woman and has travelled the designated path, the digestive enzymes will eat away the covering of the egg allowing the sperm to fertilize the egg. At any one time there is a multitude of sperm “attacking” the egg trying to be the first one to eat through the protective layer. But what happens when they get through? More to come later! The rest of the head of the sperm contains the nucleus and the 23 chromosomes needed to connect with the egg to form a human fetus. The body of the sperm contains the mitochondria which produce the ATP which the sperm needs for energy. There is a lot of movement in the tiny sperm and they need a lot of energy! The tail of the sperm whips like a flagella and produces the swimming action propelling the sperm forward on its short but important journey.
Demonstrate the formula DPD = SF – TP.
What do you mean by the term bench line or berm? Explain briefly. Also state the types of ponds based on the utilization?
Briefly define the term Interferon?
Give a brief description of the term commensalism?
Give a brief explanation of auto immunity.
Product Line: It termed as a number of products which are related and developed through similar manufacturer. These are not to be confused with product bundling that combines different items in one kind of product. Items inside a product line normally
On an average what is the life duration of red blood cells? Where are they damaged? Describe the destination of heme groups subsequent to the destruction of hemoglobin molecules?
in bioremediation Gibberella fusarium is used to break down
Briefly differentiate the term paratope and epitope.
Explain the term mixed gland? What is purpose the pancreas is considered as a mixed gland?
18,76,764
1924267 Asked
3,689
Active Tutors
1457729
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!