Biology
Surgical procedure in which a small portion of sperm duct is removed and cut end ligated in male is called

Psycotomy
Tube cotomy
Neurotomy
Vascotomy

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Biology
One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?

You are infected by a virus
You need to be vaccinated instead of taking an antibiotic
You need an antiseptic, not an antibiotic
Having waited a day, it is too late to take an antibiotic

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