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 bio-chemistry immunity and blood groups blood group blood groups and compatibility advance blood groups and transfusion compatibility of blood groups

Which blood group called as universal donar?

  1. $AB$
  2. $A$
  3. $B$
  4. $O$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Type O ( specifically O negative ) blood is called the universal donor type because it is compatible with any blood type. O blood group does not contain any antigen hence does not result in transfusion reactions.


So, the correct option is 'O'.

Multiple choice bio-chemistry immunology blood group blood groups and compatibility advance blood groups and transfusion

Between persons of which two blood groups is the blood transfusion not possible

  1. 0 and AB (AB recipient)

  2. 0 and A (0 donor)

  3. 0 and B (0 donor)

  4. 0 and AB (AB donor)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The people of blood group AB can receive transfusions of blood from people of any of the four blood groups, are called universal recipients.

Multiple choice bio-chemistry immunology blood group blood groups and compatibility advance blood groups and transfusion

Which is true of blood group agglutination test?

  1. Blood group AB when coagulation occurs with antiserum A

  2. Blood group B when coagulation occurs with antiserum B

  3. Blood group O when coagulation occurs with antiserum A as well as B

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

Agglutination occurs when an antibody binds to its corresponding antigen. Blood group B has B antigens, so it will agglutinate when mixed with anti-B antiserum.

Multiple choice biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

Which of the following statements is/are incorrect about lymph?
(i)Lymph is colourful as it has haemoglobin but no RBC.
(ii)It contains specialised lymphocytes which are responsible for immunity of the body.
(iii)Lymph is an important carrier for nutrients and hormones.
(iv)Fats are absorbed through lymph in the lacteals present in the intestinal villi.

  1. i only

  2. iii and iv

  3. ii and iii

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

Lymph is colourless as it does not contain RBC, in higher animals the respiratory pigment haemoglobin is contained only in the RBC and does not occur dispersed in body fluids. Therefore, statement i is wrong.

So, the correct answer is 'i only'

Multiple choice biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

Compared to blood our lymph has

  1. Plasma without proteins

  2. More WBCs and no RBCs

  3. More RBCs and less WBCs

  4. No plasma.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lymph consists of proteins- albumin, fibrinogen etc, nitrogenous waste, WBCs, lymphocytes, carbohydrates, fats and 94% water. It does not contain RBCs that are found in abundance in blood and platelets.

So, the correct answer is 'More WBCs and no RBCs'

Multiple choice biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

Which of the following statements is true for lymph?

  1. WBCs + serum

  2. Blood - RBCs and some proteins

  3. RBCs + WBCs + plasma

  4. RBCs + proteins + platelets
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lymph has a pale yellow colour due to absence of RBCs and platelets,  it has abundance of WBCs, Lymphocytes, carbohydrates, proteins, fats and nitrogenous waste.

So, the correct answer is 'WBCs + serum'

Multiple choice biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

Lymph is

  1. Blood minus R.B.C

  2. Blood minus W.B.C

  3. Blood minus cells

  4. Plasma minus protein
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lymph is a liquid made up of plasma, WBCs, clotting factors but does not contain RBCs and form a system in a body known as lymphatic system and flows in lymph capillaries. It transports fatty acid in the form of chyle through the digestive system and WBCs through lymph nodes to bones.

So the correct option is 'Blood minus R.B.C.'

Multiple choice biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

Which of the following cells of connective tissue is/are absent in blood and lymph?

  1. Antibody secreting cells

  2. Phagocytic cells

  3. Histamine secreting cells

  4. Fibre secreting cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blood and lymph are specialized connective tissues. They lack the fiber-secreting cells (fibroblasts) found in other connective tissues because they are fluid and do not require a structural matrix of fibers.

Multiple choice biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

One of the difference between blood and lymph is that

  1. Blood has RBCs and WBCs while lymph has lymphocytes.

  2. Blood has RBCs while lymph has no WBCs.

  3. Blood has WBCs while lymph has RBCs.

  4. Blood has dissolved organic salts while lymph has no such inorganic salt.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blood is red in colour due to presence of RBCs. Blood plasma contains RBCs, WBCs and platelets. It can clot due to presence of more amount of fibrinogen. Lymphs are colourless due to absence of RBCs. The lymph plasma contains WBCs and lymphocytes. It contains diffusible proteins. It clots slowly due to presence of less fibrinogen.

Multiple choice biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

Blood is stored in

  1. Lymph

  2. Kidney

  3. Spleen

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

The spleen is a brownish fist-sized organ located in the upper left side of the abdomen, tucked into a space between the stomach, pancreas and left kidney. It’s one of those organs that people know about, but aren’t sure what it does. Essentially, the spleen is a storage container and filter for blood, though it is part of the lymphatic system. In fact, it’s the largest lymph node in the body. One of its tasks is to remove harmful bacteria and viruses in the blood stream. Its other major task is removing or storing certain blood cells. Blood is not stored in heart, kidney and lymph. Thus, option C is correct.

Multiple choice biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

The graveyard of RBC is

  1. Liver

  2. Gall bladder

  3. Bone marrow

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

Spleen is one of the most important organ of the body. Here are few of its functions
1) In fetal and some part of the neonatal period the spleen works not only as the storehouse of red blood cells or RBCs , but also is one of the important organ for hematopoiesis I.e., the formation of new RBCs. 
2) It also acts as a storehouse of various types of white blood cells or WBCs which are used to fight against various infections like pneumococcus, meningococcus etc.
3) It is also known as graveyard of RBC as old and damaged RBC are destroyed in spleen.