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Blood - Biology, General Science Video Lecture | General Awareness & Knowledge - Bank Exams

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FAQs on Blood - Biology, General Science Video Lecture - General Awareness & Knowledge - Bank Exams

1. What is the role of blood in the human body?
Ans. Blood plays a crucial role in the human body as it transports oxygen, nutrients, hormones, and waste products throughout the body. It helps regulate body temperature, maintain pH balance, and supports the immune system.
2. How is blood classified based on its type?
Ans. Blood is classified into different types based on the presence or absence of certain proteins on the surface of red blood cells. The most common classification system is the ABO system, which categorizes blood types as A, B, AB, or O. Additionally, blood is also classified based on the presence of another protein called the Rh factor, resulting in positive (+) or negative (-) blood types.
3. What are the components of blood?
Ans. Blood is composed of various components, including red blood cells, white blood cells, platelets, and plasma. Red blood cells carry oxygen and carbon dioxide, white blood cells are involved in immune responses, platelets help in blood clotting, and plasma is a liquid that carries nutrients, hormones, and waste products.
4. How is blood produced in the body?
Ans. Blood cells are produced in the bone marrow through a process called hematopoiesis. Stem cells in the bone marrow differentiate and develop into red blood cells, white blood cells, and platelets. This continuous production ensures a constant supply of new blood cells to replace old or damaged ones.
5. What are the common blood disorders?
Ans. Some common blood disorders include anemia, where there is a decrease in the number of red blood cells or lack of hemoglobin, hemophilia, a genetic disorder that impairs the blood's ability to clot, and leukemia, a type of cancer that affects the bone marrow and leads to an abnormal production of white blood cells. Other disorders include thrombocytopenia, where there is a low platelet count, and polycythemia, an excessive production of red blood cells.
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