Biology

Human Immunity and Blood

2,096 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

Which of the following is a type of marker beacon for ILS?

  1. Outer Marker

  2. Inner Marker

  3. Middle Marker

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

ILS uses three types of marker beacons: the Outer Marker (OM) located approximately 4-7 miles from threshold, the Middle Marker (MM) about 0.5-0.8 miles out, and the Inner Marker (IM) closer to the runway (mostly for Category II/III operations). All three serve as position fixes during approach.

Multiple choice

There are ______ blood groups.

  1. 3

  2. 4

  3. 5

  4. 6
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The ABO blood grouping system classifies human blood into four main types: A, B, AB, and O. This classification is based on the presence or absence of A and B antigens on red blood cells. Type A has A antigens, Type B has B antigens, Type AB has both, and Type O has neither.

Multiple choice

Plasma proteins are made by

  1. liver

  2. thymus

  3. spleen

  4. bone marrow
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Plasma proteins like albumin and globulin are made by the liver.

Multiple choice

The expanded form of MALT is

  1. Mucosal Associated Leucocyte Tissue

  2. Mucosal Associated Lymphoid Tissue

  3. Mucosal Accelerated Lymphoid Tissue

  4. Mucosal Arranged Lymphoid Tissue
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

MALT is Mucosal Associated Lymphoid Tissue.

Multiple choice

Antiserum contains

  1. antigen

  2. antibodies

  3. blood cells

  4. fibrinogens
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Antiserum is blood serum containing antibodies. It is usually used in passive immunisation. Antibodies are proteins produced against antigen.

Multiple choice

Radhika met with a serious accident and she was immediately rushed to the hospital. The doctor advised for the transfusion of the blood. Radhika's blood group is B. Which type of blood group can be transfused to Radhika, other than group B?

  1. AB

  2. Only group B can be given

  3. O

  4. Any type of blood can be given

  5. NA
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Apart from B group, O can also be transfused as it is an universal donor and does not contain any antigens.

Multiple choice

Which of the following occurs in case of thymus damage?

  1. Loss of antibody-mediated immunity

  2. Production of blood cells

  3. Reduction of haemoglobin content in the body

  4. Loss of cell-mediated immunity

  5. NA
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Thymus plays a major role in the development of the immune system.

Multiple choice

Leukemia is a diseases related to

  1. blood

  2. heart

  3. liver

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

Leukemia is a cancer of blood-forming tissues, primarily the bone marrow and lymphatic system. It involves the overproduction of abnormal white blood cells, which crowd out healthy blood cells and cannot function properly. While it can spread to other organs, it originates in and primarily affects the blood and blood-producing tissues.

Multiple choice

Cell mediated immunity involves

  1. B lymphocytes

  2. erythrocytes

  3. T lymphocytes

  4. thrombocytes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 T  lymphocytes are a type of white blood cells involved in cell mediated immunity.