Tag: immunity related disorders and problems

Questions Related to immunity related disorders and problems

The human immuno deficiency virus (HIV) is a living entity because it can

zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

  1. Undergoes reproduction in the host cell

  2. Disturb host cell respiration

  3. Excrete in human serum

  4. Move from one cell to another

Show answer
Correct Option: A
Explanation:
HIV infects a type of white blood cell in the body’s immune system called a T-helper cell (also called a $CD _4$ cell). These vital cells keep us healthy by fighting off infections and diseases. HIV cannot grow or reproduce on its own. Instead, the virus attaches itself to a T-helper cell and fuses with it. It then takes control of the cell’s DNA, replicates itself inside the cell, and finally releases more HIV into the blood – continuing the multiplication process. This is the HIV life cycle. 
So the correct option is 'Undergoes reproduction in the host cell'

At which stage of HIV infection does on usually show symptoms of AIDS?

zoology infectious diseases cancer and aids hiv and aids immunity related disorders and problems

  1. When the infecting retrovirus enters host cells

  2. When vital DNA is produced by reverse transcriptase

  3. When HIV replicates rapidly in helper T-lymphocytes and damage large number of these

  4. Within $15$ days of sexual contact with an infected person

Show answer
Correct Option: A

AIDS is caused by

biology blood circulation cancer and aids hiv and aids immunity related disorders and problems

  1. Corynebacterium diphtheriae

  2. Human immuno deficiency virus

  3. Rubella virus

  4. Varicella virus

Show answer
Correct Option: B
Explanation:

Corynebacterium diphtheriae is a virus causing diphtheria. 
Rubella virus causes measles. 
Varicella virus causes chickenpox.
Human immunodeficiency virus infection is a disease of human immune system, which causes acquired immune deficiency syndrome. It is transmitted through sexual contact, breastfeeding and blood transfusion.
Thus, the correct answer is option B.

AIDS days is on?

biology blood circulation cancer and aids hiv and aids immunity related disorders and problems

  1. $1$st November

  2. $10$ December

  3. $1$st December

  4. $4$th June

Show answer
Correct Option: C
Explanation:
  • World AIDS Day, designated on 1 December every year since 1988.
  • It is dedicated to raise awareness, educate and improve the understanding of HIV as a global public health problem.

In India, AIDS was reported in

biology blood circulation cancer and aids hiv and aids immunity related disorders and problems

  1. 1932

  2. 1986

  3. 1990

  4. 1992

Show answer
Correct Option: B
Explanation:

The first AIDS case in India was detected in Solomon, a professor of microbiology in Government general hospital in Chennai in 1986 and since then HIV infection has been reported in all states and union territories.
Therefore, the correct answer is option B.

World AIDS Day is celebrated on

biology blood circulation cancer and aids hiv and aids immunity related disorders and problems

  1. 1  December

  2. 29 December

  3. 3 October

  4. 22 March

Show answer
Correct Option: A
Explanation:

1 December is World AIDS Day, 29 December is Biological Diversity Day, 3 October is World Animal Day and 22 March is World Water Day.

AIDS can be transmitted through

biology blood circulation cancer and aids hiv and aids immunity related disorders and problems

  1. Blood transfusion

  2. Hand shake

  3. Courtship

  4. All of the above

Show answer
Correct Option: A
Explanation:

HIV (Human Immunodeficiency Virus) is the causative agent of AIDS. HIV is spread from an infected person to another person through direct contact with some of the body’s fluids like mother milk, blood, lymph and semen through sexual intercourse or by sharing the drug equipment like needles or from mother to child during childbirth or breastfeeding or via blood transfusion.
Thus, the correct answer is option A.

Who discovered ''reverse transcription''?

biology blood circulation cancer and aids hiv and aids immunity related disorders and problems

  1. Watson and Crick

  2. Beadle and Tatum

  3. Temin and Baltimore

  4. Khorana

Show answer
Correct Option: C
Explanation:

Reverse transcriptase is an enzyme used to produced complementary strand of RNA, called as cDNA. This process occurs in RNA viruses. It was discovered by Howard Temin at the University of Wisconsin–Madison in RSV virions and independently isolated by David Baltimore in 1970 at MIT from RNA tumour viruses such as R-MLV and RSV. In 1975 Nobel Prize was awarded in Physiology or Medicine to both of them along with Renato Dulbecco. 

Hence, the correct answer is option C.

Number of AIDS patients believed to be present in India is currently

biology blood circulation cancer and aids hiv and aids immunity related disorders and problems

  1. 20,000

  2. 2,00,000

  3. 20,00,000

  4. 3,000,000

Show answer
Correct Option: D

AIDS was first reported in U.S.A in

biology blood circulation cancer and aids hiv and aids immunity related disorders and problems

  1. 1981

  2. 1971

  3. 1984

  4. 1986

Show answer
Correct Option: A
Explanation:

  • AIDS(acquired immunodeficiency syndrome) is caused by the HIV virus. It breaks down the body immune system, leaving the patient vulnerable to a host of life-threatening opportunistic infections.
  • The first AIDS cases were reported in the United States in June 1981.
  • Hence AIDS was first reported in U.S.A in 1981.
  • So, the correct answer is '1981'.