Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology immune system active and passive immunity immunity related disorders and problems diseases and immunity

Rejection of a transplant is an immune response of the type?

  1. B-lymphocyte mediated humoral response

  2. Helper T lymphocytes mediated humoral response

  3. Cell mediated involving cytotoxic T lymphocytes

  4. Cell mediated involving memory T lymphocytes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

During transplantation of organs, rejection reactions may occur due to the activity of cytotoxic T lymphocytes in the recipient.

So, the correct option is 'Cell-mediated involving cytotoxic T lymphocytes'.

Multiple choice zoology immune system active and passive immunity immunity related disorders and problems diseases and immunity

Major complication/s associated with prolonged glucocorticoidtherapy is/are

  1. Gastrointestinal ulcers

  2. Ostroporosis

  3. Increased secretion of HCI in stomach and pepsinogen

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Prolonged glucocorticoid therapy causes multiple complications including gastrointestinal ulcers, osteoporosis (not 'Ostroporosis'), and increased gastric acid and pepsinogen secretion. The question has a typo ('Ostroporosis') but the intent is clear.

Multiple choice zoology immune system active and passive immunity immunity related disorders and problems diseases and immunity

Immunosuppressive drugs possess great risk of infection because

  1. These act against specific antigen

  2. These act against all the antigens

  3. These act on antigenic receptors

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The immunosuppressive drugs are given to treat individuals with autoimmune disorders and to suppress immunity in order prevent host immune responses against antigens on the transplanted organ, thereby avoiding rejection. There are various kinds of immunosuppressive drugs; some drugs like Calcineurin inhibitors act on some of the immune cells which synthesize the receptors for antigen binding. None of the immunosuppressive drugs acts against antigens. However, use of the immunosuppressive drugs pose a risk of infection because they don't specifically inhibit certain cells that cause autoimmunity or transplant rejection, they inhibit the entire immune system making us vulnerable to infections. Thus, the correct answer is option D.

Multiple choice zoology immune system active and passive immunity immunity related disorders and problems diseases and immunity

Prolonged use of  which of the following immunosuppresants may cause immunosuppression of both innate and adaptive immunity?

  1. Tetracycline

  2. Opioids

  3. Analgesics

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chronic opioid use is known to suppress both innate and adaptive immune responses, affecting cytokine production and lymphocyte proliferation. Tetracyclines are antibiotics and analgesics are a broad class, neither of which are primarily classified as immunosuppressants.

Multiple choice zoology immune system active and passive immunity immunity related disorders and problems diseases and immunity

 ............ is a immunosuppressant which is mainly used as a folic acid analogue.

  1. Methotrexate

  2. Tetracycline

  3. Azathioprine

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Methotrexate is an immunosuppressant mainly used as a folic acid analogue. It is known as amethopterin is a chemotherapy agent and immune system suppressant. It is used to treat cancer, autoimmune diseases, ectopic pregnancy and medical abortions. Used for include breast cancer, leukemia, lung cancer, lymphoma.

Multiple choice zoology immune system active and passive immunity immunity related disorders and problems diseases and immunity

 Which of the following immunosuppressant drugs is used is to slow down the progression of multiple sclerosis?

  1. IFN

  2. Mycophenolate

  3. Beta blocker

  4. Both A and B
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

IFN is the immunosuppressive drug to slow down the progression of multiple sclerosis. It is used to treat various cancers and virus infections. It is same as protein that your body naturally produces. It is through to work by affecting cell function and body's natural defenses in many ways.

Multiple choice zoology immune system active and passive immunity immunity related disorders and problems diseases and immunity

 ............. is a self-tissue transferred from one body site to another in the same individual.

  1. Autograft

  2. Isograft

  3. Xenograft

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An autograft involves transferring tissue from one site to another within the same individual, ensuring genetic identity and preventing rejection. Isografts occur between genetically identical individuals, while xenografts occur between different species.

Multiple choice zoology immune system active and passive immunity immunity related disorders and problems diseases and immunity

An organ donation from one person to another can be categorized as 

  1. Allograft.

  2. Xenograft.

  3. Autograft.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A- Allograft or allotransplant is the transplant of cells, tissues, or organs to a recipient from a genetically non-identical donor of same species. Most of the organ or tissue transplants in human are allografts.