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Human Health and Disease Test - 61

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Human Health and Disease Test - 61
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  • Question 1
    1 / -0
    Note the following features and choose the ones applicable to Wuchereria bancrofti.
    I. Coelozoic parasite
    II. Histozoic parasite
    III. Monogenetic parasite
    IV. Digenetic parasite
    V. Monomorphic, acoelomate parasite
    VI. Dimorphic, pseudocoelomate parasite
    Solution
    • Statements II, IV, VI are correct. Wuchereria bancrofti commonly called filarial worm is a digenetic, dimorphic, pseudocoelomate, histozoic and pathogenic parasite. 
    • It is digenetic because it has two stages of multiplication in two different hosts, one sexual in the mature form, the other asexual in larval stages. 
    • It is a histozoic parasite as it lives in the tissue outside of a cell body.
      Hence, the correct answer is C.
  • Question 2
    1 / -0
    Skin-prick test on the forearm is conducted to identify the responsible allergen. This is because
    Solution
    Skin prick testing is an allergy test conducted to identify the responsible allergens for triggering symptoms in allergic diseases. This test is done to identify allergies to dust, pollen, foods, dust mites, etc. In this test, the small amount of particular allergen is introduced under the skin where mast cells coated with IgE are located. After administration, IgE cells recognizes the allergen and stimulate the mast cells to release the contents. This results in redness and itchiness of the skin. The skin-prick test only picks up true allergies mediated by IgE and mast cells. 
    Thus, the correct answer is option A.
  • Question 3
    1 / -0
    Which of the below given statements are true?
    Solution
    AIDS is a disorder of cell-mediated immune system of the body. AIDS is transmitted only by a contact of infected cells containing the blood of a patient with the blood of a healthy person as in :
    1. Unprotected sexual intercourse with an infected partner if there is tissue injury to permit blood contact.
    2. Use of contaminated needles and syringes to inject drugs and vaccines.
    3. Use of contaminated razors for shaving.
    4. Use of contaminated needles for boring pina or tattooing.
    5. Transfusion of infected blood. 
    6. Artificial insemination.
    7. Parturition from mother to baby due to rupturing of blood vessels.
    AIDS is not a contagious disease. It does not spread by casual contact such as a handshake, working together, sharing meals, clothes. It is also not spread by coughing or sneezing. Even the blood donation to an infected person will not contract the disease as blood from a healthy person is going to the body of the diseased person and there is no entry of infected blood into the healthy person.
    Thus, the correct answer is option D. 
  • Question 4
    1 / -0
    Vision problem occurring in old age is 
    Solution
    Presbyopia is a condition that occurs due to the loss of the flexibility of lens with the old age. It creates difficulty in focussing on near objects. It can be corrected by using convex lens. 
    Myopia or nearsightedness is a condition in which the eyeball is longer than normal. Light rays converge in front of retina forming a blurred image. The condition can be corrected by using concave lens. 
    Hypermetropia or farsightedness is a condition in which the eyeball is shorter than the normal. Light rays strike the retina before converging causing a blurred image. The condition can be corrected by using convex lens. 
    Anepia is a cognitive disorder marked by an impaired ability to comprehend or express language in its written or spoken form. 
    Thus, the correct answer is option B.
  • Question 5
    1 / -0
    Filariasis is caused by
    Solution
    Correct Option: D
    Explanation:
    • Filariasis affects the lymph nodes and lymph vessels.
    • It is spread by infected mosquitoes. Their bites deposit a parasite that travels to the lymph system.
    • The round worm parasite Wuchereria bancrofti is responsible for the cause of Filariasis.
    Hence, Filariasis is caused by Wuchereria bancrofi.

  • Question 6
    1 / -0
    Given below are four statements (a-d) each with one or two blanks. Select the option which correctly fills up the blanks in the two statements.
    (a) Plague is caused by .....(i)..... a deadly bacterium.  .....(ii)..... the most common form of plague is characterized by high fever, weakness and acute painful swellings of the lymph nodes.
    (b) Filariasis is characterized by swelling of the .....(i)..... and of other parts of the body. The disease, therefore, is commonly known as .....(ii)..... due to its resemblance to the leg of an elephant.
    (c) .....(i).....is the resistance to infection which an individual possesses by virtue of his/her genetic and constitutional makeup.
    (d) .....(i)..... literally means "protection against self"; .....(ii)..... is an example of it.
    Solution
    1. Plague is a disease caused by the bacterium Yersinia pestis and can infect humans by rat flea by bitting and the three types of plague are pneumonic, septicemic and most common is bubonic plague.
    2. Filariasis is the disease caused by $$Wuchereria$$ worm and effects the lower limbs(leg) and genitals and by chronic inflammation and hence also called elephantiasis.
    3. Innate immunity is a non-specific type of defense, which is present in a person since birth.
    4. Sometimes due to disbalance in genes, the immune system attacks the cell of own body. Rheumatoid arthritis primarily affects joints is along term autoimmune disorder.
    So the correct option is"C".
  • Question 7
    1 / -0
    Active immunity development is related to ______________.
  • Question 8
    1 / -0
    An antifertility drug is:
    Solution
    Antifertility drugs are chemical substances which suppress the action of hormones that promote pregnancy.

    An antifertility drug is novestrol (Ethynylestradiol). Another example of antifertility drugs is norethindrone.

    Veranal and Equanil are tranquillizers. Histamine is not a drug. Histamine stimulates the secretion of HCl and pepsin in the stomach.

    Hence, option A is correct.
  • Question 9
    1 / -0
    Which one of the following is incapable of curing Pellagra?
  • Question 10
    1 / -0
    Ring worm is caused by
    Solution

    Correct Option: C

    Explanation:

    • Ringworm is a common fungal infection of the skin.
    • It causes a scaly, crusted rash that may appear round, red patches on the skin.

    Hence, ring worm is caused by fungi.

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