Question

What is the function of acrosome?

Answer 1

Hint: The top of sperm is understood as acrosome. Acrosome may be a bag of general protein and carbohydrate digesting enzymes, present in inactive form within the head region below the sperm membrane.

Complete step by step answer:
The acrosome first interacts with the ovum and sequectional reaction results in formation of membrane. The head contains the nucleus and therefore the enzyme- filled acrosome. Acrosome enzymes permitts the sperm to penetrate the egg's barriers. The neck encloses a centriole. The centriole will fuse with a second centriole, contributed by the egg, to make the centrosome.

Additional Information:
- Acrosome reaction may be a sum of reactions; it's not one reaction.
- Steps in acrosome reaction:
Acrosome fusion with sperm membrane
Activation of acrosome vesicle
Acrosome filament formation
Loading of fusogenic proteins on acrosome filament
- Acrosome fusion with sperm membrane by the second messenger mechanism which ends up in calcium channels open .
- Enzymes activation for fusion advantage of fusing acrosome membrane with sperm membrane during which just one membrane has got to be destroyed.
- In this reaction less enzymes will use and less damage will happen to sperm.
- Activation of acrosome bag or head by acrosome bag synthesis where factor IV source and Ion channels. Leads the enzymes for activation of acrosomes.
- Formation of acrosome filament may be a calcium dependent reaction during which these enzymes bind alpha and beta tubulin and convert the actin cluster into acrosomal filament.
- Loading of Fusogenic proteins, during this tread on acrosomal filament fusogenic or binding protein are loaded for attachment to binding receptors ,that is present on specific sites on egg membrane.

Note:
- Exocytosis occurs when the cell wall of the sperm fuses with the outer acrosomal membrane, forming many small openings to the acrosome.
- Contents of the acrosome, which are hydrolytic enzymes, spill over and degrade the zone near the sperm head. This forms a tunnel within the zona, through which the sperm begins to move.
- Degradation of the sperm cell wall during the acrosome reaction causes the loss of ZP3 receptors.