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प्रश्न
Enlist any two features of Acquired immunity.
Give any two unique features of acquired immunity.
Explain unique features of acquired immunity.
उत्तर
- Specificity: It can produce a specific antibody or T-lymphocyte against a particular antigen/pathogen.
- Diversity: It can recognize a vast variety of diversity pathogens or foreign molecules.
- Discrimination between self and non-self: It differentiates between the own body (self) and foreign (non-self) molecules.
- Memory: When the immune system encounters a specific foreign agent for the first time, it generates an immune response and eliminates the invader. This is called a first encounter. The immune system retains the memory of the first encounter. As a result, a second encounter with the same pathogen brings about quicker.
संबंधित प्रश्न
A heavily bleeding and bruised road accident victim was brought to a nursing home. The doctor immediately gave him an injection to protect him against a deadly disease.
(a) Write what did the doctor inject into the patient’s body.
(b) How do you think this injection would protect the patient against the disease?
(c) Name the disease against which this injection was given and the kind of immunity it provides.
How does the human body respond when vaccine is introduced into it?
Write the full forms of AIDS.
Differentiate between: Innate immunity and acquired immunity
Write the full forms of: ATS
Mention if the following statement is true (T) or false (F).
Treatment by the use of chemicals is known as allopathy.
Enlist any four barriers that contribute to innate immunity.
In acquired immunity there is a specific mechanism for each foreign molecule. This property is known as _______.
Toxins released by bacteria like tetanus toxin undergo______.
Match column I with column II and choose the correct option.
| Column I | Column II | ||
| i. | Specificity | a. | Lymphocytes produced against each particular foreign molecule |
| ii. | Diversity | b. | Self-cells are not attacked by immune system of the own body |
| iii. | Memory | c. | Immune system works against multiple pathogens |
| iv. | Discrimination between self and non-self | d. | Stronger immune response on second encounter |
