Question 1

Which one of the following sets includes the bacterial diseases?

Accepted Answer

Cholera is a bacteria infection caused by eating food or drinking water contaminated with Vibrio cholerae. Typhoid fever is caused by Salmonella typhi bacteria. Mumps is a viral disease caused by the mumps virus. Tetanus is bacteria infection caused by Clostridium tetani. Tuberculosis is caused by bacterium Mycobacterium tuberculosis. Measles is caused by virus paramyxovirus. Malaria is a disease caused by Plasmodium parasite. Poliomyelitis is infectious disease caused by the poliovirus. Diphtheria is an infection caused by the Corynebacterium diphtheriae bacterium. Leprosy is caused by bacteria Mycobacterium leprae. Plague is a bacterial infection caused by bacterial strain Yersinia pestis. Thus, the correct answer is 'Diphtheria, Leprosy, Plague.'

Question 2

Which one of the following is not a bacterial disease?

Accepted Answer

Causative agent of cholera is Vibrio cholerae. Vibrio cholerae is a bacterium. Tuberculosis is caused by bacteria, Mycobacterium tuberculosis.Anthrax is caused by bacteria Bacillus anthracis. Influenza is caused by influenza virus.

Question 3

Which of the following sets of diseases is caused by bacteria?

Accepted Answer

Tetanus is caused by Clostridium tetani bacteria and Cholera is caused by Vibrio cholerae. Mumps, herpes (herpes simplex virus), influenza (influenza viruses) and small pox (variola strain) are viral diseases.Therefore, the correct answer is option C.

Question 4

Which among the following diseases is not sexually transmitted ?

Accepted Answer

Hepatitis is the infection which results in the inflammation of the liver. Generally, the hepatitis virus is the reason for this condition. This disease is not transmitted sexually. Syphilis, HIV-AIDS and Gonorrhea are the sexually transmitted diseases which get transferred from the infected person during intercourse. Thus, the correct answer is option B.

Question 5

Under which of the following conditions is a person most likely to fall sick?
(a) When she is recovering from malaria.
(b) When she has recovered from malaria and is taking care of someone suffering from chicken-pox.
(c) When she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chicken-pox. Why?

Accepted Answer

A person is more likely to fall sick when she is on a four-day fast after recovering from malaria and is taking care someone suffering from chicken pox. This is because since she has suffered from malaria and is in the recovery phase, it means that she is still not completely diseases-free. Fasting affects the immune system as the body is deprived of essential nutrients required to maintain a healthy body. Chicken pox is a contagious diseases, this also makes her susceptible in contracting the disease while taking care of a person suffering of chicken pox.

Question 6

Which of the following is a bacterial disease?

Accepted Answer

Measles, smallpox, and rabies are viral diseases. Tuberculosis is a bacterial disease and it is caused by Mycobacterium tuberculosis.So, the correct answer is (D).

Question 7

Give reason, majority of children in many parts of India are already immune to Hepatitis A.

Accepted Answer

The virus of Hepatitis A spreads through contaminated water and there are many children below the age of 5 who get infected to this disease through the polluted water. The infection of this disease is mild during early stages of life, that is, childhood and they develop  antibodies for this disease, as a result majority of children in many parts of India are already immune to Hepatitis A. This is an example of active immunity.

Question 8

Viruses, which cause hepatitis, are transmitted through:

Accepted Answer

Hepititis is the inflammation of the Liver, it is generally caused by viral infection. Hepatitis is of 5 types based on their mode of transmission, symptoms caused, recovery period etc. They are named as Hepatitis A, B, C,D and E respectively. Hepatitis A and E are caused by consumption of contaminated water.So, the correct answer is 'Water'

Question 9

Which bacterium causes peptic ulcers ? Who discovered the peptic ulcer pathogen for the first time?

Accepted Answer

(i) Helicobacter pylori causes peptic ulcers(ii) It was first discovered by two Australian doctors Marshall and Warren in the year 1982.

Question 10

Which of the following groups represents the bacterial diseases?

Accepted Answer

Causative organism Disease Bacteria- Vibrio cholerae Cholera Bacteria- Mycobacterium tuberculosis Tuberculosis Protozoan - Plasmodium vivax Malaria Virus- Measles virus Measles Virus -  Variola  Small pox Bacteria- Salmonella typhimurium Bacteria - Bacillus anthracis Typhoid Anthrax

Revise with Concepts

Bacterial Diseases

Intermediate Knowledge of Viral Diseases

Quick Summary With Stories

Introduction of viral diseases.

Bacterial diseases in humans