Tag: classification of microbes

Questions Related to classification of microbes

Which of the following disease is 100% fatal and mode of transmission is through infected animals?

  1. AIDS

  2. Rabies

  3. Tetanus

  4. Hepatitis-B


Correct Option: B
Explanation:

AIDS is transmitted sexually or through blood transfusion or from mother to fetus.
Tetanus is not transmitted from person to person or from animal to person.
Hepatitis-B is transmitted through blood and infected bodily fluids.
Rabies is a fatal viral disease of mammals, most often transmitted through the bite of a rabid animal.
Therefore, the correct answer is option b.

Which one of the following is an example of zoonosis disease?

  1. Measles

  2. Diptheria

  3. Leprosy

  4. Rabies


Correct Option: D
Explanation:

A zoonotic disease is a disease that is transmitted from animals to humans. They can be caused by viruses, bacteria, parasites and fungi. Measles is a viral disease in humans. Diptheria is caused by bacterium Corynebacterium diptheriae. Leprosy is chronic infection caused by bacteria Mycobacterium leprae.
Rabies is one such zoonotic disease caused by the rabies virus of the genus Lyssavirus.
Thus, the correct answer is option (D), 'Rabies'.

Dengue fever is transmitted by

  1. Aedes aegypti

  2. Culex fatigans

  3. Anopheles

  4. Aedes donovoni


Correct Option: A
Explanation:

Dengue fever is a mosquito-borne disease caused by the dengue virus. There is a characteristic skin rash that is similar to measles. It is transmitted by several species of mosquito within the genus Aedes, mainly Aedes aegypti.
Therefore, the correct answer is option A.

The vector of 'break bone fever' is

  1. Culex

  2. Aedes

  3. Anopheles

  4. None of the above


Correct Option: B
Explanation:

Break bone fever is another name for dengue fever. It is a mosquito-borne tropical disease caused by the dengue virus. It is transmitted by several species of the mosquito within the genus Aedes aegypti.
Therefore, the correct answer is option B.

Influenza is caused by 

  1. Virus

  2. Bacteria

  3. Algae

  4. Fungus


Correct Option: A
Explanation:

Influenza is commonly known as 'flu' and is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness and at times can lead to death. The best way to prevent the flu is by getting a flu vaccination each year.

Dengue is transmitted by

  1. Aedes

  2. Male Anopheles

  3. Female Anopheles

  4. Tsetse fly


Correct Option: A
Explanation:

Aedes aegypti, the principal mosquito vector of dengue viruses is an insect closely associated with humans and their dwellings. People not only provide the mosquitoes with blood meals but also water-holding containers in and around the home needed to complete their development. The mosquito lays her eggs on the sides of containers with water and eggs hatch into larvae after a rain or flooding. A larva changes into a pupa in about a week and into a mosquito in two days. 

Match the following with refernce to the insects and diseases.

List I List II
(A) Aedes (I) Dermatobiasis
(B) Cimex (II) Typhoid
(C) Psorophora (III) Encephalitis
(D) Musca (IV) Bubonic plague
(V) Break bone fever

Identify the sequence of list II with respect to List I.

  1. A- (V), B- (I), C- (III), D- (II)

  2. A- (IV), B- (V), C- (III), D- (I)

  3. A- (V), B- (IV), C- (I), D- (II)

  4. A- (V), B- (IV), C- (II), D- (I)


Correct Option: A
Explanation:

The Aedes aegypti mosquito can transmit the viruses that cause dengue fever or breakbone fever.
Psorophora columbiae mosquito is a known vector of encephalitis.
Diseases carried by house flies (musca domestica) include typhoid, cholera and dysentery.
Cimex (bed bug) causes dermatobiasis.

The disease pneumonia in humans which infects the alveoli of the lungs is caused by

  1. Plasmodium

  2. Haemophilus influenzae

  3. Salmonella typhii

  4. None of the above


Correct Option: B
Explanation:

Haemophilus influenzae is a small, pleomorphic bacteria which is the most often cause of pneumonia, a lung infection.
Therefore, the correct answer is option B.

Dengue is caused by 

  1. Female Anopheles

  2. Female Aedes

  3. Male Anopheles

  4. All of the above


Correct Option: B
Explanation:

Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Dengue is spread by several species of a mosquito of the female Aedes type, principally Aedes aegypti. Symptoms include high fever, headache, vomiting, muscle and joint pains, characteristic skin rash, bleeding, low levels of blood platelets and blood plasma leakage. So, the correct answer is 'Female Aedes'.

Aedes spreads 

  1. Malaria

  2. Dengue

  3. Sleeping sickness

  4. Kala-azar


Correct Option: B
Explanation:
  • Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Dengue is spread by several species of a mosquito of the  Aedes Type, principally A.aegypti.
  • Symptoms typically begin three to fourteen days after infection.[2] This may include a high fever, headache, vomiting, muscle and joint pains, and a characteristic skin rash
  • Arbovirus is an informal name used to refer to any viruses that are transmitted by arthropod vectors. As dengue is transmitted by an arthropod vector(mosquito) its causative organism is called arbovirus. Hence Aedes spreads Dengue'.
  • So,the correct answer is 'Dengue'.