The genes causing cancer are called

1. structural genes                         
2. expressor genes
3. oncogenes                               
4. regulatory genes

Subtopic:  Cancer |
 97%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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:

1. metagenesis 
2. metastasis   
3. teratogenesis     
4. mitosis

Subtopic:  Cancer |
 89%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

When an apparently healthy person is diagnosed as unhealthy by a psychiatrist, the reason could be that
 

1. the patient was not efficient at his work
2. the patient was not economically prosperous
3. the patient shows behavioural and social maladjustment
4. he does not take interest in sports

Subtopic:  Introduction |
 85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Which of the following are the reason(s) for rheumatoid arthritis? Choose the correct option.
 

I. Lymphocytes become more active
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



1. l and Il
2. II and IV
3. III and IV
4. I and III

Subtopic:  Allergies & Autoimmunity |
 91%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

AIDS is caused by HIV. Among the following, which one is not a mode of transmission of HIV?

1. Transfusion of contaminated blood
2. Sharing the infected needles
3. Shaking hands with infected persons
4. Sexual contact with infected persons

Subtopic:  AIDS |
 95%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

‘Smack’ is a drug obtained from the

1. latex of Papaver somniferum       
2. leaves of Cannabis sativa
3. flowers of Dhatura
4. fruits of Erythroxyl coca

Subtopic:  Drugs & Alcohol Abuse |
 86%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

The substance produced by a cell in viral infection that can protect other cells from further infection is

1. serotonin     
2. colostrum   
3. interferon       
4. histamine

Subtopic:  Details of Immunity |
 93%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Transplantation of tissues/organs to save certain patients often fails due to rejection of such tissues/organs by the patient. Which type of immune response is responsible for such rejections?

1. Auto-immune response
2. Humoral immune response
3. Physiological immune response
4. Cell-mediated immune response

Subtopic:  Human Immune System |
 93%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Antibodies present in colostrum, which protect the new born from certain diseases, is of

1. Ig G type                                 
2. Ig A type
3. Ig D type                                 
4. Ig E type

Subtopic:  Active & Passive Immunity |
 93%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Tobacco consumption is known to stimulate secretion of adrenaline and noradrenaline. The component causing this could be:

1. Nicotine                                                   
2. Tannic acid
3. Curamin                                             
4. Catechin

Subtopic:  Drugs & Alcohol Abuse |
 98%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.