Tag: zoology

Questions Related to zoology

How many sentences is/are true among the following sentences?
(a) Allergy is due to release of histamine and serotonin from mast cells.
(b) Cell mediated immunity is responsible for rejection of graft.
(c) Principles of vaccination is based on diversity of immune system.
(d) Both bone marrow and thymus provides micro environment for development and maturation of T-lymphocytes.

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. One

  2. Two

  3. Three

  4. Four

Show answer
Correct Option: A

Write true or false and correct the incorrect statement.
Allergens are the antibodies which include dust, pollen, certain foods, drugs and fur.

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. True

  2. False

Show answer
Correct Option: A

Antihistamine drugs are effective against

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Bacterial infection

  2. Viral infection

  3. Paraplegia

  4. Allergy

Show answer
Correct Option: D
Explanation:

Antihistamines are drugs that inhibit the action of histamine in the body by blocking the receptors of histamine. When the histamine recepotrs are stimulated by histamine, it may produce allergic reactions, such as itching, hay fever and rash or hives. Antihistamines treat the symptoms of such allergic reactions.
Thus, the correct answer is option (D), 'Allergy'.

Which of the following are the symptoms of eczema, a common skin disease?

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Skin becomes thickened and reddish brown colour

  2. Skin drops off in the form of small scales

  3. There will be an intense itching

  4. All of the above

Show answer
Correct Option: D
Explanation:
The classic symptoms of eczema are: itching - this is the worst aspect because it can make the person scratch causing further rawness of the skin and possible infections to develop; redness - caused by extra blood flowing through the blood vessels in the skin in the affected area; a grainy appearance to the skin, caused by tiny fluid filled blisters just under the skin called vesicles; weeping when the blisters burst, either by themselves or because of scratching, and the fluid oozes on to the surface of the skin; crusts or scabs that form when the fluid dries; dry, scaly skin - this may be the result of the disease or it may also be the natural skin type of the family; dry skin can be a predisposing factor to developing eczema; pale patches of skin may appear because eczema can disturb the production of pigment which controls skin colour; lichenification - a leathery, thicker skin area in response to scratching.  
Therefore, the correct answer is option B.

Which of the following is a cause of allergy which is stored in mast cells?

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Interferons

  2. Histamine

  3. Immunoglobulins

  4. None of the above

Show answer
Correct Option: B
Explanation:

Allergies are the reactions or the response given to the antigens which are in the form of particles. Allergy is also termed as hypersensitivity. The cells release IgE antibodies, histamines and other cytokines which manifest the symptoms of the reaction. When the allergen is encountered, the mast cells and basophils undergo degranulation which releases histamine. Histamine is the inflammatory agent. 

Thus, the correct answer is option B. 

Which of the following affects H$ _1$ receptor?

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Agglutination

  2. Allergic manifestations

  3. Opsonization

  4. None of the above

Show answer
Correct Option: B

Specific allergen immunotherapy is also known as

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Desensitization.

  2. Immunization.

  3. Agglutination.

  4. Both A and C.

Show answer
Correct Option: A

Which of the following is a symptom of allergy?

zoology important and common human diseases allergy and autoimmune diseases allergy non infectious diseases

  1. Urticaria

  2. Rhintis

  3. Asthma

  4. All of the above

Show answer
Correct Option: D
Explanation:

Allergies are the reactions or the response given to the antigens which are in the form of particles. Allergy is also termed as hypersensitivity. The cells release IgE antibodies, histamines and other cytokines which manifest the symptoms of the reaction. Allergy may result in urticaria which is the development of skin rash with reddening and swelling of the regions. The allergen results in stimulation of mucus secretion and sneezing which causes rhinitis. The common example of allergy is asthma which results in the constriction of the bronchi and shortness of breath due to the blocking of the airway.  

Thus, the correct answer is option D. 

The immune system which works against self is

zoology immune system allergy and autoimmune diseases allergy non infectious diseases

  1. Self immune system

  2. Autoimmunity

  3. Specific immunity

  4. None of the above

Show answer
Correct Option: B
Explanation:

Autoimmunity is the system of immune responses of an organism against its own cells and tissues. It is the abnormal immune response in which immune system attacks healthy cells.
Thus, the correct answer is option B.

Which of the following is an autoimmune disease?

zoology immune system allergy and autoimmune diseases allergy non infectious diseases

  1. Rheumatoid arthritis

  2. Grave's disease

  3. Hashimoto's disease

  4. All of the above

Show answer
Correct Option: D
Explanation:

Autoimmune disease is a condition in which our own immune system attacks our own tissues. Rheumatoid arthritis is an autoimmune disease that causes chronic inflammation of the joints.
Grave's disease is an autoimmune disease in which the patient;s own immune system attacks the thyroid gland causing it to produce too much of thyroid hormone.
Hashimoto's disease is an autoimmune condition caused by inflammation of the thyroid gland.
Thus, the correct answer is option D.