Protection of female gametes from male gametes
Explain, how the male gametes go through the egg cell? How the female gametes guard itself from entry of more gametes after the first sperm cell?
Expert
Sperm cell which reaches the egg cell activates the acrosome reaction, a procedure where the hydrolytic enzymes of the acrosome are liberated on the external surface of zona pellucida (a protective layer that surrounds the egg cell). Portion of this layer is digested by acrosomal enzymes offering the sperm cell to arrive at the plasma membrane of the egg cell performing the fecundation.
At the moment, that sperm cell forms the contact with egg cell membrane a chemical alteration of this membrane takes place. Enzymes liberated by the exocytosis form the zona pellucida not capable to bind to other sperm cells and other male gametes are not able to enter the egg cell.
What is the defense method which starts to work whenever inflammation fails to stop an infection?
Give a brief explanation of the term nekton, plankton, and benthos.
What is the chromosome area where the centromere is situated is termed as? How are chromosomes categorized in relation to the place of their centromere?
What occurs when the oxygen supply is inadequate to maintain aerobic cellular respiration throughout muscle exercise?
plz i need the description of this topic soon
What kind of exoskeleton do some molluscs present?
How does sodium-potassium pump existed in the cell membrane work? Also state what is the significance of this protein for cell?
Write down the some examples of inter-specific competition?
I. Distortion of message. II. Delays in transmission. III. Overload or unload message. IV.&nb
Briefly state the functions of spleen.
18,76,764
1925491 Asked
3,689
Active Tutors
1451196
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!