MEDIUM
12th CBSE
IMPORTANT
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Cancer-causing genes are called
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Important Questions on Human Health and Diseases
EASY
12th CBSE
IMPORTANT
In malignant tumours, the cells proliferate, grow rapidly and move to other parts of the body to form new tumours. This stage of disease is called
EASY
12th CBSE
IMPORTANT
When an apparently healthy person is diagnosed as unhealthy by a psychiatrist, the reason could be that
HARD
12th CBSE
IMPORTANT
Which of the following are the reason(s) for Rheumatoid arthritis? Choose the correct option.
i. The ability to differentiate pathogens or foreign molecules from self cells increases
ii. Body attacks self cells
iii. More antibodies are produced in the body
iv. The ability to differentiate pathogens or foreign molecules from self cells is lost
MEDIUM
12th CBSE
IMPORTANT
AlDS is caused by HIV. Among the following, which one is not a mode of transmission of HIV?
MEDIUM
12th CBSE
IMPORTANT
'Smack' is a drug obtained from the
HARD
12th CBSE
IMPORTANT
The substance produced by a cell in viral infection that can protect other cells from further infection is
HARD
12th CBSE
IMPORTANT
Transplantation of tissues/organs to save certain patients often fails due to the rejection of such tissues/organs by the patient. Which type of immune response is responsible for such rejections?
MEDIUM
12th CBSE
IMPORTANT
Antibodies present in colostrum which protect the newborn from certain diseases is of
