Sperm activation in female reproductive tract is also known as:
In the female genital tract, some lipid is removed from the sperm surface to make it active or allow easy removal of enzyme.
Capacitation occurs in:
Capacitation occur in Vagina to remove lipid from surface of sperm to make active.
Cortical granules release from ovum to prevent
Cortical granule release From ovum due to penetration of one sperm which is responsible for preventing polyspermy
Enzyme for fertilization present in -
Acrosome of Sperm have enzyme for Sperm wall digestion.
Location of fertilization is -
Fertilization occurs in Ampulla region of fallopian tube
Meiosis II completed in female when-
Fertilization of ovum induce meiosis II in Secondary oocyte to form ootid
Number of meiosis II in female is Equal to -
Total no of meiosis II is equal to total no of fertilization
Which of the following is generally least in no-
Second polar body is result of meiosis II occur after fertilization so least in number
Anaphase promoting complex get active in Ovum or Secondary oocyte when-
Sperm entry activate APC which promote ovum nuclei from metaphase II to Anaphase II so that meiosis II get completed.
Polyspermy is prevented by:
Polyspermy is prevented by Depolarization of membrane due to entry of sperm lead to influx of Ca and then cortical granules release to form fertilization membrane.
Which is true about Fertilizin -
Antifetilizin is located on:
Antifertilizin is located on sperm head which promote Fertilizin and antifertilizin reaction between sperm and ovum
The chemical substance called fertilizin performs which of the following function:
The most important significance of fertilizin & antifertilizin reaction is to:
In which of the following fertilization occurs externally in water?
Amphibian produce unfertilized egg
Fertilization can be correctly defined as fusion of:
Fertilization is defined as a process of fusion of male and female gametes. The gametes are special haploid cells. The most widely accepted definition of species is the biological species- according to which members of same species alone can carry on the process of sexual reproduction (including fertilization) and produce fertile offspring.
Polyspermy is normally prevented by:
The fertilization of the ovum with only one sperm is termed as monospermy causes the fertilization membrane to prevent the entry of other sperm. So, the correct answer is, 'Formation of fertilization membrane. '.
Ectopic pregnancy can occur in: