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Human Health and Disease Test - 41

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Human Health and Disease Test - 41
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Weekly Quiz Competition
  • Question 1
    1 / -0
    AIDS virus contains
    Solution
    • AIDS (Acquired Immunodeficiency Syndrome) is caused by HIV (Human Immunodeficiency Virus), which has a viral envelope, matrix proteins, and core. 
    • The viral envelope consists of two layers of lipids with embedded proteins. Matrix proteins are present between envelope and core. The viral core consists of two single strands of RNA for its genome
    So, the correct answer is 'RNA with protein'.
  • Question 2
    1 / -0
    Genetic material found in human Immunodeficiency virus (HIV) is
    Solution
    Human immunodeficiency virus (HIV) is the causal organism of AIDS (Acquired Immuno Deficiency Syndrome.) It is a retrovirus belonging to the family of Retroviridae. The core of HIV contains two molecules of single straned RNA (as genetic material) and reverse transcriptase. Hence, option B is correct.
  • Question 3
    1 / -0
    Alcoholism may leads to
    Solution
    Liver cells contain enzymes which metabolise alcohol. These enzymes break down alcohol into other chemicals which in turn are then converted to water and carbon dioxide. These are then passed out in the urine and from the lungs. The liver cells can process only a certain amount of alcohol per hour. When the consumption of alcohol is more the liver cannot process a large amount of it fast leading to liver cirrhosis i.e. liver damage. Thus the correct answer is option B.
  • Question 4
    1 / -0
    Who among the following is considered to be healthy person.
    Solution
    According to WHO health is a state of complete physical, mental and social well being of a person and not just absence of disease. Drugs and alcohol makes a person weaker. Typhoid is a diseases condition.
    Hence the correct option is D.
  • Question 5
    1 / -0
    __________ affect personal and community health.
  • Question 6
    1 / -0
    _________ is prepared by killing the microorganisms.
  • Question 7
    1 / -0
    Which of these diseases are transmitted through body fluids ?
    Solution
    AIDS and hepatitis-B are sexually transmitted diseases that are spread by contact with infected body fluids which include blood, semen, vaginal fluid or other body fluids through the mucous. Thus the correct answer is option A.
  • Question 8
    1 / -0
    Which of the following provides non-specific immunity?
    Solution
    Pathogens are the disease causing organisms. The surface molecules of the pathogen that are recognized by the immune system to initiate immune response are termed as antigens. B cells are responsible for the production of antigen-specific antibodies while T cells serve in cell-mediated immunity. Fibrinogen is involved in blood clotting process. Phagocytes are the component of non-specific immune response and kill the pathogens that invade the body. Phagocyte cell engulfs the pathogen like bacteria or other small cells and digests them e.g., macrophage cells. Thus, the correct answer is D.
  • Question 9
    1 / -0
    Which of the following is used by Human immunodeficiency virus (HIV) to integrate its own DNA into a host cell's genome?
    Solution
    HIV (Human Immunodeficiency Virus) has a viral envelope, matrix proteins and core. The viral core consists of two single strands of RNA. RNA genome containing retroviruses have reverse transcriptase enzyme that synthesizes a DNA copy (cDNA) of viral RNA. This cDNA can be introduced in the hosts' genome and allowed to replicate to form viral proteins.
    Thus, the correct answer is option 'Reverse transcriptase'.
  • Question 10
    1 / -0
    Cell-mediated immunity involves the activation of lymphocytes in an antigen-specific manner.
    Which of the following would be a likely trigger for this immune response pathway?
    Solution
    Cell mediated immunity is  macrophage providing an antigen for the T cells, so that the infected cells can be targeted
    So, the correct answer is 'A macrophage presenting antigen to a T-cell'
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