At which stage of HIV infection does one usually shows symptoms of AIDS?
When viral DNA is produced by reverse transcriptase
When HIV replicates rapidly in helper T- lymphocytes and damages large number of these
With 15 days of sexual contact with an infected person
With 15 days of sexual contact with an infected person
C.
With 15 days of sexual contact with an infected person
HIV enters into T -lymphocytes replicates and produces progeny viruses. The progeny viruses released in the blood other helper T-lymphocytes.This is repeated leading to a progressive decrease in the body of the infected person. During this period, the person suffers from bouts of fever, diarrhoea and weight loss. The person starts suffering from an infection.
About which day in a normal human menstrual cycle does rapid secretion of LH (popularly called LH surge) normally occurs?
14th day
20th day
5th day
5th day
Which one of the following is the most widely accepted method of contraception in India, as at present?
Tubectomy
Diaphragms
IUDs (Intra Uterine Devices)
IUDs (Intra Uterine Devices)
What happens during fertilisation in humans after many sperms reach close to the ovum?
Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida
All sperms excepts the one nearest to the ovum lose their tails
Cells of corona radiata trap all the sperms excepts one
Cells of corona radiata trap all the sperms excepts one
The technique called gamete intra-fallopian transfer (GIFT) is recommended for those females
who cannot produce an ovum
who cannot retain the foetus inside uterus
who cervical canal is too narrow to allow passage for the sperms
who cervical canal is too narrow to allow passage for the sperms
