Home
Class 12
BIOLOGY
Diphtheria is caused by...

Diphtheria is caused by

A

Poisons released by living bacterial cell into the host tissue

B

Poision released from dead bacterial cell into the host tissue

C

Poisons released by virus into the host tissues

D

Excessive immune response by the host's body

Text Solution

Verified by Experts

The correct Answer is:
A
Toxins released from cyanobactrium diphtheriae cause diphtheria bacterial cells do not contain gene for toxin production, a phage carries the gene for it. Only those lysogenised cells of C. diphtheriae, which carry `beta`-phage, can produce the toxin and cause diphtheria.
Promotional Banner

Topper's Solved these Questions

  • HUMAN HEALTH AND DISEASES

    ARIHANT NEET|Exercise CHAPTER EXCERCISES ((B) MEDICAL ENTRANCES SPECIAL FORMAT QUESTIONS (ASSERTION AND REASON))|6 Videos

  • HUMAN GENETICS

    ARIHANT NEET|Exercise Chapter Exercise (c) Medical entrances gallery (Collection of questions asked in NEET & Various Medical Entrance Exams)|83 Videos

  • HUMAN REPRODUCTION

    ARIHANT NEET|Exercise MEDICAL ENTRANCES GALLERY (COLLECTION OF QUESTIONS ASKED IN NEET & VARIOUS MEDICAL ENTRANCE EXAMS)|69 Videos

Similar Questions

Explore conceptually related problems

Diphteria is caused by

Malaria is caused by

Malaria is caused by

Elephantiasis is caused by………………