Scarlet fever occurs when the strain of streptococcus causing the sore throat pr

ID: 300047 • Letter: S

Question

Scarlet fever occurs when the strain of streptococcus causing the sore throat produces streptococcal pyrogenic toxin, and hypersensitive to the toxin, the host toxin as well the host is immune to the toxin the host is not immune to the toxin. A positive tuberculin skin test does not necessarily mean that the person has tuberculosis indicates that the person has been infected by M tuberculosis at some point m the past answers (a) and (b) are correct answers (a) and (b) are false Pneumonic plague is brought about by a. inhalation of airborne Yersinia pestis. dissemination of Yersinia pestis to the lungs in late stages of bubonic plague. dissemination of Yersinia pestis to the lungs immediately following a bite from an infected flea. dissemination of Yersinia pestis to the lungs immediately following a bite by an infected rat. Formation of a pseudo-membrane is characteristic of whooping cough pneumonic plague diphtheria Q fever Which of the following diseases is not caused by a virus? pertussis influenza chickenpox mumps Mumps is a viral infection that typically begins in the thyroid gland sublingual glands. submaxillary glands. parotid glands. Bright red lesions in the mouth and throat known as Koplik spots are seen in measles rubella. mumps diphtheria Shingles is a recurrent infection with the chickenpox virus that has persisted in latent form in salivary glands, macrophages, lymph nodes nerve ganglia Aspirin should not be given to children with chickenpox because of the risk of excessive bleeding. Reye syndrome Guilain-Barre syndrome excessively high fever. Burkill's lymphoma. Gastroenteritis may be caused by ingestion of viruses, bacteria. Preformed toxins all of these True or false (true=A; false=B). The hygiene hypothesis proposes that insufficient exposure to microbes can lead to allergies True or False (true=A; false=B) All nucleated cells produce MHC class I molecules, but only specialized cells types (antigen presenting cells) make MHC class II molecules Salmonella and Shigella do not ferment glucose. do not ferment lactose. do not grow in standard laboratory culture media do not produce acid from fermentation of carbohydrates.

Explanation / Answer

Question

Answer

Explanation

(64) Scarlet fever occurs when the strain of streptococcus causing the sore throat produces streptococcal pyrogenic toxin, and

Scarlet fever is the result of a group A Streptococcus infection and is caused by secretion of pyrogenic exotoxins by Streptococcus bacteria.

(65) A positive tuberculin skin test

(a) does not necessarily mean that the person has tuberculosis

A positive reaction will not confirm that the person has TB germs, he may not have active disease. He might be having latent TB infection and he will not become sick because of this.

(66) Pneumonic plague is brought about by

(a)inhalation of airborne Yersinia pestis

Plague is caused by spreading of Yersinia pestis bacteria into the lungs.

(68) Which of the following diseases is not caused by virus?

d) Diphtheria

Whooping cough or diphtheria is caused by Bordetella pertussis. This bacteria releases toxin after attaching to the lining of the airways in the upper respiratory system.

(69) Mumps is a viral infection that typically begins in the

d. parotid gland

One or both parotid glands will swell and starts paining in case of parotid gland.

(70) Bright red lesion in the mouth and throat known as koplik spots are seen in

a)Measles

Koplik spots are the characteristics of measles infection.