A patient bitten by a venomous snake is injected with antiserum containing ready made antibodies. This provides
Correct answer: C. immediate but temporary passive immunity
- A. active immunity lasting many years
- B. a vaccination effect
- C. immediate but temporary passive immunity
- D. permanent genetic resistance
Explanation
Borrowed antibodies neutralise the venom at once but are gradually broken down over weeks, giving no memory. In an emergency that speed is worth more than durability, which is exactly why antiserum is used.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Specific Defense Mechanism
Specific defense mechanisms provide targeted immunity through B lymphocytes, T lymphocytes, antibodies and memory cells that recognize particular antigens. Questions cover humoral and cell mediated responses, clonal selection, primary and secondary immune responses, vaccination and passive immunity, while distinguishing adaptive defenses from the immediate, non specific innate response.
Practise Immunity
139 free Immunity MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Specific Defense Mechanism questions
A person who recovers from measles is immune to it for life. This is an example of
White blood cells such as neutrophils and macrophages that engulf and digest bacteria are called
An antibody binds only to the antigen that stimulated its production because
The part of an antibody molecule that binds the antigen is located in the
Booster doses of a vaccine are given in order to
Histamine released by mast cells at a wound causes