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 production of blood cells body fluids and circulation biology

Process of formation of blood is

  1. Haemolysis

  2. Plasmolysis

  3. Haemopoiesis

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

Blood is a special connective tissue consisting of a fluid matrix, plasma, and formed elements. The process of formation of blood is called Hemopoiesis. It takes place in red bone marrow found in the epiphysis of long bones.flat bones(ribs and cranial bones), vertebrae and pelvis.

So, the correct answer is 'Haemopoises'.

Multiple choice production of blood cells body fluids and circulation biology

Bone marrow takes part in __________________.

  1. Controlling blood pressure

  2. As haemopoietic tissue

  3. Assisting kidneys

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

Bone marrow is a semi-solid tissue which may be found within the spongy or cancellous portions of bones. In birds and mammals, bone marrow is the primary site of new blood cell production or hematopoiesis. It is composed of hematopoietic cells, marrow adipose tissue, and supportive stromal cells.


So, the correct answer is 'As hemopoietic tissue'.

Multiple choice production of blood cells body fluids and circulation biology

Granulocytes are formed inside _____________.

  1. Liver

  2. Red bone marrow

  3. Kidney

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

Granulocytes are a category of white blood cells characterized by the presence of granules in their cytoplasm. Granulocytes are produced via granulopoiesis in the bone marrow.


So, the correct answer is 'Red bone marrow'.

Multiple choice production of blood cells body fluids and circulation biology

Red blood cells are produced$/$  erythropoiesis occurs in _____________.

  1. Bone marrow

  2. Spleen

  3. Liver

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

Erythropoiesis is the process which produces red blood cells, which is the development from erythropoietic stem cell to mature red blood cell. this usually occurs within the red bone marrow. In the early fetus, erythropoiesis takes place in the mesodermal cells of the yolk sac. By the third or fourth month, erythropoiesis moves to the liver. After seven months, erythropoiesis occurs in the bone marrow.


So, the correct answer is 'Bone marrow'.

Multiple choice production of blood cells body fluids and circulation biology

Both erythrocytes and leucocytes are formed in ___________.

  1. Thymus

  2. Bone marrow

  3. Arterial walls

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

Red blood cells, most white blood cells, and platelets are produced in the bone marrow, the soft fatty tissue inside bone cavities


So, the correct answer is 'Bone marrow'.

Multiple choice production of blood cells body fluids and circulation biology

Platelet plug is associated with.

  1. Clot retraction

  2. Haemostasis

  3. Fibrin formation

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

The platelet plug, also known as the hemostatic plug or platelet thrombus, is an aggregation of platelets formed during the earlier stage of hemostasis in response to blood vessel wall injury.  After platelets are recruited and begin to accumulate around the breakage, their “sticky” nature allows them to adhere to each other. This forms a platelet plug, which prevents more blood from leaving the body as well as any outside contaminants from getting in. The plug provides a temporary blockage of the break in the vasculature. As such, platelet plug formation occurs after vasoconstriction of the blood vessels but before the creation of the fibrin mesh clot, which is the more permanent solution to the injury. The result of the platelet plug formation is the coagulation of blood. It can also be referred to as primary hemostasis.


So, the correct answer is 'Haemostasis'.

Multiple choice production of blood cells body fluids and circulation biology

Bone marrow of long bones are the sites of 

  1. Production of WBC's

  2. Production of RBC's

  3. Production of blood

  4. Breakdown of RBC's
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A) There are two types of white blood cells, T and B cells (lymphocytes). T cells are produced and mature in the thymus gland while B cells are produced and mature in the bone marrow.
B) RBCs are produced in the bone marrow.
C) RBCs, some WBCs, and platelets are formed in the bone marrow, but the plasma is not formed in the bone marrow.
D) Old or damaged RBCs are broken down by macrophages in the spleen and liver.
So the correct answer is 'Production of RBC's'.

Multiple choice production of blood cells body fluids and circulation biology

Formation of red blood is called _____________.

  1. Haemocytosis

  2. Haemolysis

  3. Haemopoiesis

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

Blood cell formation also called Hematopoiesis, or Hemopoiesis is a continuous process by which the cellular constituents of blood are replenished as needed. It occurs in the bone marrow.


So, the correct answer is 'Haemopoiesis'.

Multiple choice production of blood cells body fluids and circulation biology

Formation of blood corpuscles is known as

  1. Haemolysis

  2. Rouleaux

  3. Haemopoiesis

  4. Phagocytosis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Haemopoiesis is the formation of cellular components of blood (i.e. blood cells) which are derived from haematopoietic stem cells (HSC). These cells are present in the medulla of bone marrow and have the capability of self renewal. They differentiate into blood cells and some of the daughter cells remain as HSCs and thus, it's a never ending process. In foetus, this process takes place in liver whereas after birth, it occurs in bone marrow.
So, the correct answer is 'Haemopoiesis'.
Multiple choice production of blood cells body fluids and circulation biology

Which of the following cells are derived from myeloid progenitors?

  1. Macrophages

  2. Megakaryocytes

  3. Granulocyte

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Hematopoietic stem cells of bone marrow give rise to myeloid and lymphoid progenitor cells.  Myeloid progenitor cells include macrophages, megakaryocytes, granulocytes, platelets, and erythrocytes. Thus the correct answer is option D.
Multiple choice production of blood cells body fluids and circulation biology

Blood bank of human body is

  1. Spleen

  2. Liver

  3. Bone

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

Spleen is the blood bank of human body as it has the capacity to store considerable amount blood, that can be released in a situation of emergency (about a cup).

So, the correct answer is 'Spleen'

Multiple choice production of blood cells body fluids and circulation biology

Choose correct alternative in the following statements:
Nucleus is absent in

  1. RBCs

  2. WBCs

  3. All blood cells

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

The nucleus is absent in red blood cells in order to accomodate more space for haemoglobin. It also allows the cell to maintain its biconcave shape which aids diffusion. 

Hence, the correct answer is 'RBCs' .

Multiple choice production of blood cells body fluids and circulation biology

Cells formed in bone marrow include

  1. RBC

  2. RBC and leucocytes

  3. Leucocytes

  4. Lymphocytes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
RBCs (Red blood cells) or erythrocytes transport oxygen in the body and formed in bone marrow. They are roughly circular and lack nucleus and other organelles.
Leucocytes or white blood cells (WBCs) may be granular or agranular. Granulocytes include basophils, eosinophils, neutrophils and agranulocytes include monocytes and lymphocytes. These cells are also formed in bone marrow. 
So, the correct answer is 'RBC and leucocytes'.
Multiple choice hepatic portal system components of the circulatory system transport in animals the circulatory system biology

Mark the correct statement about lymph.

  1. It Maintains the volume of blood.

  2. It destroys the invading microbes.

  3. Both A and B are true for lymph

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

Lymph acts as middle man which transports food materials, oxygen, hormones etc. to the body cells and brings carbon dioxide and other metabolic wastes from the body cells to blood and then finally pours the same into venous system. It destroys the invading germs and it maintains the volume of blood.