Question 1

Which blood corpuscle help in Coagulation of blood?

Solution:

 

Oops! Wrong answer!

Coagulation is a complex process by which the blood forms clots to block and then heal a lesion/wound/cut and stop the bleeding. It is a crucial part of hemostasis- stopping blood loss from damaged blood vessels. In hemostasis a damaged blood vessel wall is plugged by a platelet and a fibrin-containing clot to stop the bleeding, so that the damage can be repaired. Coagulation involves a cellular (platelet) and protein (coagulation factor) component. When the lining of a blood vessel (endothelium) is damaged, platelets immediately form a plug at the site of the injury, while at the same time proteins in the blood plasma respond in a complex chemical reaction, rather like a waterfall, to form fibrin strands which reinforce the platelet plug.
Difficulty Level: Hard
Correct Attempts: 0%
Topic: How things work

Question 2

White blood cells act

Solution:

 

Correct Answer

White blood cells(WBCs), also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. All white blood cells are produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell. Leukocytes are found throughout the body, including the blood and lymphatic system.
Difficulty Level: Hard
Correct Attempts: 0%
Topic: Biology

Question 3

Which among the following is the largest part of the blood?

Solution:

 

Correct Answer

Plasma is the liquid (fluid) part of the blood. It makes the largest part of the blood. Plasma is pale in colour.
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Healths & Diseases

Question 4

Which among the following statements is true regarding clotting of blood?

Solution:

 

Oops! Wrong answer!

Platelets are responsible for clotting or coagulation of blood. In case of an injury, the blood clots after some time. This prevents excess loss of blood. Clotting of blood is a defense mechanism in the body.
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Healths & Diseases

Question 5

Match the following:
I. White blood cells
II. Haemoglobin
III. Platelets
IV. Blood
1) Oxygen
2) Blood clot
3) RBC
4) Immune system

Solution:

 

Oops! Wrong answer!

White blood cells make the immune system of the body.
Red blood cells contain a red pigment called haemoglobin
Platelets are responsible for clotting or coagulation of blood. In case of an injury, the blood clots after some time. This prevents excess loss of blood. Clotting of blood is a defence mechanism in the body
Blood carries oxygen from lungs to various parts of the body
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Healths & Diseases

Question 6

The person of which of the following blood groups can accept the blood of any group?

Solution:

 

Correct Answer

Blood group O – Universal donor
Blood group AB – Universal receptor
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Biology

Question 7

For human blood transfusion, which blood group is known as universal donor?

Solution:

 

Correct Answer

The “O” blood group is a universal donor for human blood donation and the person with blood group AB is the universal acceptor.
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Biology in Day to Day Use

Question 8

Blood group was discovered by :

Solution:

 

Oops! Wrong answer!

The A,B,O blood group system is widely credited to have been discovered by the Austrian scientist Karl Landsteiner, who identified the O, A, and B blood types in 1900.
Difficulty Level: Easy
Correct Attempts: 0%
Topic: Biology

Question 9

The pH of human blood is between—

Solution:

 

Correct Answer

Blood pH is regulated to stay within the narrow range of 7.35 to 7.45, making it slightly basic. This ideal blood 7.4 pH measurement means it is just slightly more alkaline than acid. The pH in the human digestive tract varies greatly (see Human Digestive Tract pH Range Chart on the left side). The pH of saliva is usually between 6.5 – 7.5.
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Biology

Question 10

Life of RBC in human blood is

Solution:

 

Correct Answer

After about 100-120 days of being in the circulation, RBCs are removed from through a process called “eryptosis”. Erythropoiesis is the process by which human erythrocytes are produced. Erythrocytes have a life-span of 100-120 days. Human erythrocytes are produced through a process named erythropoiesis, developing from committed stem cells to mature erythrocytes in about 7 days. When matured, in a healthy individual these cells live in blood circulation for about 100 to 120 days (and 80 to 90 days in a full term infant).
Difficulty Level: Medium
Correct Attempts: 0%
Topic: The World of the Living

Question 11

Neutrophils and lymphocytes orginate form

Solution:

 

Oops! Wrong answer!

  • Neutrophils and lymphocytes orginate from the bone marrow.
  • B-lymphocytes, originate in the bone marrow, produce antibodies to fight off infection. The antibody attaches to the microbe, tagging it as “foreign”. Infection-fighting cells called neutrophils can now recognize the microbe, engulf and digest it.
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Biology

Question 12

The life span of RBC of man is

Solution:

 

Correct Answer

Red blood cells (RBCs), also called erythrocytes, develop in the Bone marrow and circulate for about 100-120 days in the body before their components are recycled by macrophages.
Difficulty Level: Easy
Correct Attempts: 0%
Topic: Biology

Question 13

Other name of Platelets is?

Solution:

 

Oops! Wrong answer!

    • Platelets also called thrombocytes (Thromb + cyte, “blood clot cell”), are a component of blood whose functionis to stop bleeding by clumping and clotting blood vessel injuries.

 

    • Platelets have no cell nucleus: they are fragments of cytoplasm that are derived from the megakaryocytes of the bone marrow, and then enter the circulation.

 

    • Platelets are found only in mammals, whereas in other animals (e.g. birds, amphibians) thrombocytes circulate as intact mononuclear cells.

 

Difficulty Level: Medium
Correct Attempts: 0%
Topic: Biology

Question 14

Which of the following is known as the graveyard of RBC

Solution:

 

Oops! Wrong answer!

Spleen is also known as the graveyard of RBC, if it helps u1Stem cells in bone marrow make all blood cells. RBC lives about 120 days. Spleen mainly acts as a filter for purifying the blood, removing microbes and worn out or damaged red blood cells. It is also an important organ in the immune system, producing the white blood cells that fight infection and synthesize antibodies.
Difficulty Level: Easy
Correct Attempts: 0%
Topic: Biology

Question 15

Prothrombin, responsible for clotting of blood is released by_____.

Solution:

 

Correct Answer

  • Prothrombin, responsible for clotting of blood is released by blood platelets.
  • It is plasma protein produced in the liver in the presence of Vitamin k and converted into thrombin during blood clotting mechanism.
  • It gets converted into thrombin during normal injury to tissue or circulatory system.
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Biology

Question 16

Which Vitamin is required for in clotting of blood?

Solution:

 

Correct Answer

Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. Vitamin K deficiency is manifest as a tendency to bleed excessively.
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Chemistry

Question 17

Blood fails to clot white flowing in the blood vessel because of the presence of ?

Solution:

 

Oops! Wrong answer!

  •  Heparin is an anticoagulant (blood thinner) that prevents the formation of blood clots in blood vessel. Heparin is used to treat and prevent blood clots in the veins, arteries, or lung.
  • Heparin also known as unfractionated heparin, a highly sulfated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
Difficulty Level: Easy
Correct Attempts: 0%
Topic: Biology

Question 18

Which of following is function of blood?

Solution:

 

Correct Answer

Blood performs many important functions within the body:-
* Supply of nutrients and oxygen
* Regulation of core body temperature
* Hydraulic functions
* Removal of waste such as carbon dioxide, urea, and lactic acid
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Biology

Question 19

A+ blood group can only receive red blood cells from

Solution:

 

Correct Answer

• A blood group is a classification of blood
• Antibodies, i.e. absence and presence and in the blood also presence or absence of inherited antigenic substances on the surface of red blood cells (RBCs).
• These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depends on the blood group.
• A+ can give red blood cells to other A+ and AB+ recipients.
• A+ blood group can only receive red blood cells from A or O blood types.
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Biology

Question 20

Which one of the following statements about lymph is correct?

Solution:

 

Oops! Wrong answer!

The lymphatic system is a complex system of fluid drainage and transport, and immune response and disease resistance.
Fluid that is forced out of the bloodstream during normal circulation is filtered through lymph nodes to remove bacteria, abnormal cells and other matter.
This fluid is then transported back into the bloodstream via the lymph vessels.
Lymph only moves in one direction, toward the heart.
Difficulty Level: Medium
Correct Attempts: 0%
Topic: Biology

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