Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Spermiogenesis - Spermatogenesis
At the end of the meiosis the spermatids appear as simple spherical cells with a centrally located nucleus. Their differentiation into sperm requires an extensive morphological transformation. The various cellular organelles like mitochondria, golgi body and centrosomes contribute to such a transformation. The first step involves the formation of an acrosomal structure from the Golgi body. The acrosome lies proximal to the nucleus and forms a cap over the sperm nucleus. As the cap is formed the nucleus rotates and the acrosomal cap faces the basal membrane of the seminiferous tubule. This rotation is essential because the flagellum is to arise from the centriole on the other side of the nucleus. Subsequently the nucleus flattens-and condenses and there is a loss of cytoplasm. The mitochondria tend to form a ring around the base of the flagellum and become the neck region of the sperm. The fully formed sperm enters the lumen of the seminiferous tubule.
Explain about the Electrophoresis? Electrophoresis refers to the movement of charged particles because of an external electric field. Because charged molecules can be made to m
Define Body Composition - Geriatric Nutrition? After 30 years of age 1-2% decline in lean body mass annually is observed. The total body water, bone mass and lean body mass
Q. What is the name given to conditions in which the own immune system of the individual is the agent of diseases? What are some examples of these conditions? Diseases caused b
What is Ancient Gondwanaland? Did you know that the land surface of the earth was once comprised of two super continents called Gondwana and Laurasia? Click on the Multimedia b
Response to Cold - Responses of Plants to Stress Let us first see what happen to a plant when it is exposed to a cold climate with temperatures below 0°C. If the temperature i
Porifera - Regeneration in Invertebrates Sponges have immense regenerating ability and show two ways of doing so as displayed below. : (a) Regeneration from small segments-
Production Efficiency - Ecosystem The maximum amount of solar energy harvested by plants is about 5 per cent but the average for green plants, on the whole is only a small fra
Q. How can a great biological diversity protect an ecosystem from environmental damage? Why are less biodiverse ecosystems at risk of suffering deep biological harm if submitted to
Munch Pressure Flow Model Munch, a German plant physiologist, proposed in 1930, a simple physical model which can be tested in the laboratory for the mechanism of phloem trans
Disease and Pathogenesis Disease management is a complex and challenging undertaking. Not only are new pathogens and treatments constantly being discovered by effective
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd