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!
Tail - Structure of the Sperm
The tail or flagellum is the longest part of the sperm. By its movement it causes the sperm to swim with the head forward. It consists of a thin layer of cytoplasm surrounded by plasmalemma. The axial filament is the main part of the tail or flagellum. Its structure is essentially similar to a typical flagellum or cilium with the arrangement of 9 peripheral pairs and one central pair of longitudinal fibers. The major portion of the flagellum is called 'axoneme'. An axoneme is formed by the microtubules emerging out of the centriole at the base of sperm nucleus. The core of the axoneme consists of two central microtubules surrounded by a row of nine doublet microtubules. In fact, only one microtubule is complete having thirteen protofilaments; the other is C-shaped having only eleven protofilaments. The protofilaments are exclusively made of the dimeric protein-tubulin. Another protein dynein is attached to microtubule. The dynein is capable of hydrolysing ATP molecule and can convert chemical energy into mechanical energy that propels the sperm.
What is the difference between the amphibian heart and the reptile heart? The reptiles have double and incomplete circulation too, three heart chambers (two atria and one ventr
HACCP Control Point HACCP Control Point : Any step at which biological, chemical or physical factors can be controlled.
1 list the names of the phyla of animalike protists that have only free-living members
Given an individual who is heterozygous at 6 loci, how many different gametic Genotypes are possible? A. 36 B. 12 C. 32 D. 48 E. 64
Define about the Metabolism of Selenium compounds? Selenium compounds' are generally very efficiently absorbed by humans and selenium absorption does not appear to be' under ho
Assessment You can observe it visually at birth. The anterior abdominal wall is absent and the posterior bladder lining which is bright red in colour is exposed. Urine seeps
Hypodermic-Subcutaneous Injection By this route the drug is mainly absorbed into the blood stream by way of the lymphatic drainage. Absorption is slower by this route
Place a slide of Amoeba (common species is A. proteus) under tlie lnicroscope and focus it under low power (5x x 5x), and observe it carefully. Amoeba looks like an irregular colou
Q What are the two major types of endocytosis? Endocytosis is the entry of material in the cell engulfed by portions of the cell membrane. Endocytosis can be classified as p
Define the metabolism and respiration of cornea. Metabolism and Respiration of Cornea The cornea requires energy for the maintenance of its transparency. Energy in
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