Advertisements
Advertisements
प्रश्न
A patient was given an anti-retroviral drug by the doctor.
Give the scientific name of the causative agent of HIV disease
उत्तर
Human immunodeficiency virus
APPEARS IN
संबंधित प्रश्न
Draw a well-labelled diagram of an antibody molecule.
Fever plays a major role in innate immunity by
Which type of resistance against pathogens does a human acquire through life?
Expand the term ADA.
Which one engulfs pathogens rapidly?
Differentiate between active immunity and passive immunity.
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.
Vaccines prepared by genetic engineering are safe to man because they are ______.
| 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)
The following is well-known abbreviation, which have been used in this chapter. Expand to its full form:
CMI
