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Biology and Human Welfare - 1

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Antibiotic(s) obtained from bacillus species is/are

  1. penicillin

  2. polymyxin B and polymyxin E

  3. cephalosporin

  4. fluoroquinolone


Correct Option: B
Explanation:

Polymyxin B and polymyxin E have been ultimately considered as the last resort treatment of such infections.

Chronic inflammation of eye occurs in the case of

  1. rabies

  2. dengue

  3. chickenpox

  4. trachoma


Correct Option: D
Explanation:

It causes inflammation of eyes and effects the conjunctiva and cornea.

Sarcoma is cancer of

  1. epithelial cells

  2. mesodermal cells

  3. blood cells

  4. polycythemia


Correct Option: B
Explanation:

This includes cancer of bones, cartilages, tendons, adipose and tissues, etc.

HIV mainly attacks

  1. B-cells

  2. cytotoxic T-cells

  3. stem cells

  4. helper T-cells


Correct Option: D
Explanation:

HIV enters helper T-cells and replicates inside to produce more virus.

Which of the following is a high-yielding variety of soybean?

  1. Pusa Ageti

  2. MH 2

  3. Pusa 24

  4. Pusa Bold


Correct Option: C
Explanation:

This variety of soybean has been developed by Pusa Research Institute, New Delhi. So, it is the correct answer. 

Bacteriology is the study of

  1. bacteria

  2. bacterial plasma membrane

  3. bacterial pillus

  4. bacterial capsule


Correct Option: A
Explanation:

Bacteriology is the study of bacteria. It comprises the identification, classification and characterisation of bacterial species. 

Polio is caused by

  1. enterovirus

  2. paramyxovirus

  3. varicella

  4. rubeola


Correct Option: A
Explanation:

This is the correct option. Poliomyelitis, often called polio or infantile paralysis, is an infectious disease caused by the enterovirus.

Directions: The following question has four choices out of which ONLY ONE is correct.

Which one of the following is an anaerobic gram negative cocci?

  1. Peptococcus

  2. Peptostreptococcus

  3. Sarcina

  4. Veillonella


Correct Option: D
Explanation:

Veillonella is anaerobic gram negative cocci.

Filariasis is caused by

  1. culex mosquito

  2. Ascaris lumbricoids

  3. Taenia solium

  4. Wuchereria bancrofti


Correct Option: D
Explanation:

The microfilarae larva of this helminth causes filaria.

Directions: The following question has four choices out of which ONLY ONE is correct.

Which of the following diseases is caused by heliminth?

  1. Filariasis

  2. Malaria

  3. Giardiasis

  4. Mumps


Correct Option: A
Explanation:

It is caused by Wuchereria bancrofti . It is commonly known as elephantiasis due to swelling of legs, scrotum, etc.

Directions: The following question has four choices out of which ONLY ONE is correct.

Which of these viral diseases in humans is caused by a DNA virus?

  1. Common cold

  2. Smallpox

  3. Mump

  4. Measles


Correct Option: B
Explanation:

Smallpox is caused by poxvirus, it is a DNA virus.

Directions: The following question has four choices out of which ONLY ONE is correct.

Which of the following is a tick borne viral disease?

  1. Kyasanur Forest Disease

  2. Chickungunya

  3. Mayaro

  4. Semliki Forest


Correct Option: A
Explanation:

Kyasanur Forest Disease - It is a haemorrhagic fever caused by flavi virus and transmitted by tick.

In the human immune system, interferon is a part of

  1. cellular barrier

  2. physical barrier

  3. physiological barrier

  4. cytokine barrier


Correct Option: D
Explanation:

Interferon is a cytokine barrier.

Which of the following is not an RNA virus?

  1. Herpes virus

  2. Reovirus

  3. Deltavirus

  4. Rota virus


Correct Option: A
Explanation:

It is one of the viruses of a family of double-stranded DNA viruses.

The intermediate host of Trypanosoma is

  1. sand fly

  2. tse-tse fly

  3. aedes aegyptis

  4. anopheles mosquito


Correct Option: B
Explanation:

It is a blood sucking parasite.

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