Why Do We Fall Ill MCQ
1. Which one of the following is not a viral disease?
(a) Dengue
(b) AIDS
(c) Typhoid
(d) Influenza
Ans. (c) Typhoid
Explanation: Typhoid is a bacterial disease.
2. Which one of the following is not a bacterial disease?
(a) Cholera
(b) Tuberculosis
(c) Anthrax
(d) Influenza
Ans. (d) Influenza
Explanation: Influenza is a viral disease.
3. Which one of the following disease is not transmitted by mosquito?
(a) Brain fever
(b) Malaria
(c) Typhoid
(d) Dengue
Ans. (c) Typhoid
Explanation: Typhoid does not need a vector for transmission. It is transmitted through contaminated food and water.
4. Which one of the following disease is not caused by bacteria?
(a) Typhoid
(b) Anthrax
(c) Tuberculosis
(d) Malaria
Ans. (d) Malaria
Explanation: Malaria is cause by protozoa.
5. Which one of the following diseases is caused by protozoans?
(a) Malaria
(b) Influenza
(c) AIDS
(d) Cholera
Ans. (a) Malaria
6. Which one of the following has a long-term effect on the health of an individual?
(a) Common cold
(b) Chicken pox
(c) Chewing tobacco
(d) Stress
Ans. (c) Chewing tobacco
Explanation: Common cold and chicken pox are acute diseases and hence do not have long term effects. Stress can be managed by making certain changes in lifestyle. But the effect of chewing tobacco remains for a long time even after giving it up.
7. Which of the following can make you ill if you come in contact with an infected person?
(a) High blood pressure
(b) Genetic abnormalities
(c) Sneezing
(d) Blood cancer
Ans. (c) Sneezing
Explanation: Diseases in other options are non-infectious diseases. Sneezing is one of the symptoms of common cold and many other respiratory diseases. All these diseases are infectious diseases. Hence, sneezing can spread infectious disease from one person to another.
8. AIDS cannot be transmitted by
(a) sexual contact
(b) hugs
(c) breast feeding
(d) blood transfusion
Ans. (b) hugs
Explanation: Exchange of body fluids is necessary for transmission of AIDS. Exchange of body fluids is not possible through hugs. Hence, AIDS does not get transmitted by hugging.
9. Making anti-viral drugs is more difficult than making anti-bacterial medicines because
(a) viruses make use of host machinery
(b) viruses are on the border line of living and non-living
(c) viruses have very few biochemical mechanisms of their own
(d) viruses have a protein coat
Ans. (c) viruses have very few biochemical mechanisms of their own
Explanation: All anti-bacterial medicines stop some or the other metabolism in bacteria and thus are effective in controlling further spread of bacteria. Since viruses have very few biochemical mechanisms of their own, it is highly difficult to make medicines to act against a particular metabolism. Hence, making anti-viral drugs is more difficult than making anti-bacterial medicines.
10. Which one of the following causes kala-azar?
(a) Ascaris
(b) Trypanosoma
(c) Leishmania
(d) Bacteria
Ans. (c) Leishmania
Explanation: Leishmania is a protozoan which causes kala-azar.
