Biology

Human Immunity and Blood

2,051 Questions

Human immunity and blood questions cover the physiological mechanisms protecting the body against diseases and the components of blood. Topics include blood groups, cell mediated immunity, monoclonal antibodies, and blood coagulation. These biology topics frequently appear in general science sections of competitive exams.

Blood groupsCell mediated immunityMonoclonal antibodiesBlood coagulationCancer immunology

Human Immunity and Blood Questions

Multiple choice

What type of cancer affects the blood-forming tissues, including bone marrow and lymph nodes?

  1. Melanoma

  2. Lymphoma

  3. Sarcoma

  4. Leukemia
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Leukemia is a type of cancer that affects the blood-forming tissues, disrupting the production of healthy blood cells.

Multiple choice

Which cancer is associated with the uncontrolled growth of cells in the liver, the organ responsible for filtering toxins from the blood?

  1. Liver Cancer

  2. Pancreatic Cancer

  3. Gallbladder Cancer

  4. Stomach Cancer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Liver cancer arises from the abnormal proliferation of cells in the liver, often leading to the formation of malignant tumors.

Multiple choice

Which of the following is a type of innate immune response?

  1. Adaptive immunity

  2. Humoral immunity

  3. Cell-mediated immunity

  4. Natural immunity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Natural immunity is a type of innate immune response that is present from birth and does not require prior exposure to a pathogen.

Multiple choice

Which of the following is a chemical barrier of innate immunity?

  1. Lysozyme

  2. Interferon

  3. Complement system

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

Lysozyme, interferon, and the complement system are all chemical barriers of innate immunity that help to kill or inactivate pathogens.

Multiple choice

Which of the following is a cellular component of innate immunity?

  1. Neutrophils

  2. Macrophages

  3. Natural killer cells

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

Neutrophils, macrophages, and natural killer cells are all cellular components of innate immunity that help to kill or phagocytize pathogens.

Multiple choice

Which of the following is a type of pattern recognition receptor (PRR)?

  1. Toll-like receptors (TLRs)

  2. C-type lectin receptors (CLRs)

  3. NOD-like receptors (NLRs)

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

Toll-like receptors (TLRs), C-type lectin receptors (CLRs), and NOD-like receptors (NLRs) are all types of pattern recognition receptors (PRRs) that help to recognize pathogens and trigger innate immune responses.

Multiple choice

Which of the following is a type of cytokine that is produced by innate immune cells?

  1. Interleukin-1 (IL-1)

  2. Interleukin-6 (IL-6)

  3. Tumor necrosis factor-alpha (TNF-alpha)

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

Interleukin-1 (IL-1), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-alpha) are all types of cytokines that are produced by innate immune cells and help to regulate the immune response.

Multiple choice

Which of the following is a type of natural killer (NK) cell?

  1. CD56bright NK cells

  2. CD56dim NK cells

  3. NKT cells

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

CD56bright NK cells, CD56dim NK cells, and NKT cells are all types of natural killer (NK) cells that help to kill or inactivate pathogens.

Multiple choice

Which of the following is a type of dendritic cell?

  1. Conventional dendritic cells (cDCs)

  2. Plasmacytoid dendritic cells (pDCs)

  3. Myeloid dendritic cells (mDCs)

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

Conventional dendritic cells (cDCs), plasmacytoid dendritic cells (pDCs), and myeloid dendritic cells (mDCs) are all types of dendritic cells that help to activate adaptive immune responses.

Multiple choice

Which of the following is a type of innate lymphoid cell (ILC)?

  1. Natural killer (NK) cells

  2. Group 1 ILCs

  3. Group 2 ILCs

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

Natural killer (NK) cells, group 1 ILCs, and group 2 ILCs are all types of innate lymphoid cells (ILCs) that help to regulate the immune response.

Multiple choice

Which of the following is a type of pattern recognition receptor (PRR) that is expressed on the surface of phagocytes?

  1. Toll-like receptors (TLRs)

  2. C-type lectin receptors (CLRs)

  3. NOD-like receptors (NLRs)

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

Toll-like receptors (TLRs), C-type lectin receptors (CLRs), and NOD-like receptors (NLRs) are all types of pattern recognition receptors (PRRs) that are expressed on the surface of phagocytes and help to recognize pathogens.

Multiple choice

Which of the following is a type of phagocyte?

  1. Neutrophils

  2. Macrophages

  3. Dendritic cells

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

Neutrophils, macrophages, and dendritic cells are all types of phagocytes that help to engulf and destroy pathogens.

Multiple choice

Which of the following is a type of cytokine that is produced by macrophages?

  1. Interleukin-1 (IL-1)

  2. Interleukin-6 (IL-6)

  3. Tumor necrosis factor-alpha (TNF-alpha)

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

Interleukin-1 (IL-1), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-alpha) are all types of cytokines that are produced by macrophages and help to regulate the immune response.

Multiple choice

Which type of immune response is primarily responsible for transplant rejection?

  1. Humoral immune response

  2. Cell-mediated immune response

  3. Innate immune response

  4. Adaptive immune response
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The cell-mediated immune response, particularly the activation of cytotoxic T cells, plays a crucial role in transplant rejection by recognizing and destroying foreign tissues.

Multiple choice

Which cell type plays a critical role in inducing immune tolerance to transplanted tissues?

  1. Regulatory T cells (Tregs)

  2. Cytotoxic T cells (CTLs)

  3. Helper T cells (Th cells)

  4. Natural killer (NK) cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Regulatory T cells (Tregs) play a crucial role in inducing immune tolerance by suppressing the activation and proliferation of other immune cells, thereby preventing immune rejection.