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प्रश्न
Differentiate between Innate and acquired immunity.
उत्तर
| Innate Immunity | Acquired Immunity | |
| 1. | It is a non-pathogen specific type of defense mechanism | It is a pathogen specific type of defense mechanism. |
| 2. | It is inherited from parents and protects the individual from birth. | It is acquired after the birth of an individual. |
| 3. | It operates by providing barriers against the entry of foreign infectious agents. | It operates by producing primary and secondary responses, which are mediated by B−lymphocytes and T-lymphocytes. |
| 4. | It does not have a specific memory. | It is characterized by an immunological memory. |
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संबंधित प्रश्न
Draw a well-labelled diagram of an antibody molecule.
Which of the following is a type of vaccine which generates artificially acquired passive immunity?
Fever plays a major role in innate immunity by
The entire body is protected from attack from its own immune system due to the ______
Which of the following are characters of acquired immunity?
The type of immunity developed in response to vaccination is ______.
Expand the term ADA.
Crypts of lieberkuhn are present in ______.
Which of the following immunoglobulin constitute the largest percentage in human milk?
Which of the following acts as a physiological barrier to the entry of microorganisms into the human body?
Acquired immunity is due to ______
Antibodies present in colostrum which protect the new born from certain diseases is of ______.
Antivenom against snake poison contains ______.
Why is mother's milk considered the most appropriate food for a new born infant?
Why is an antibody molecule represented as H2L2?
Differentiate between active immunity and passive immunity.
Highlight the structural importance of an antibody molecule with a diagram. Name the four types of antibodies found to give a humoral immune response, mentioning the functions of two of them you have studied.
Why do doctors have to carry many tests for selecting a person to be a suitable donor for someone who is going for an organ transplant and not take the organ from just any body? Explain giving reason.
| When a microorganism invades a host, a definite sequence of events usually occurs leading to infection and disease, causing suffering to the host. This process is called pathogenesis. Once a microorganism overcomes the defence system of the host, development of the disease follows a certain sequence of events as shown in the graph. Study the graph given below for the sequence of events leading to the appearance of a disease and answer the questions that follow: |
(a) In which period, according to the graph there are maximum chances of a person transmitting a disease/infection and why? (1)
(b) Study the graph and write what is an incubation period. Name a sexually transmitted disease that can be easily transmitted during this period. Name the specific type of lymphocytes that are attacked by the pathogen of this disease. (2)
OR
(b) Draw a schematic labelled diagram of an antibody. (2)
(c) In which period, the number of immune cells forming antibodies will be the highest in a person suffering from pneumonia? Name the immune cells that produce antibodies. (1)
Tetanus antitoxin (Tetanus toxoid) when injected into the human body it immediately provides ______.
