MEDIUM
12th CBSE
IMPORTANT
Earn 100

What does the term 'memory' of the immune system mean?

Important Questions on Human Health and Diseases

EASY
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 8 - Human Health and Diseases>VERY SHORT ANSWER TYPE QUESTIONS>Q 16
 If a patient is advised Antiretroviral Therapy, which infection is he suffering from? Name the causative organism.
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 8 - Human Health and Diseases>SHORT ANSWER TYPE QUESTIONS>Q 1
Differentiate between active immunity and passive immunity.
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 8 - Human Health and Diseases>SHORT ANSWER TYPE QUESTIONS>Q 2
Differentiate between benign tumours and malignant tumours.
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 8 - Human Health and Diseases>SHORT ANSWER TYPE QUESTIONS>Q 3
Do you consider passive smoking is more dangerous than active smoking? Why?
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 8 - Human Health and Diseases>SHORT ANSWER TYPE QUESTIONS>Q 4
"Prevention is better than cure". Comment.
EASY
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 8 - Human Health and Diseases>SHORT ANSWER TYPE QUESTIONS>Q 5
Explain any three preventive measures to control microbial infections.
EASY
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 8 - Human Health and Diseases>SHORT ANSWER TYPE QUESTIONS>Q 6

In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the question below.

Why is the virus called retrovirus?

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HARD
12th CBSE
IMPORTANT
NCERT Exemplar Biology - Class 12>Chapter 8 - Human Health and Diseases>SHORT ANSWER TYPE QUESTIONS>Q 6

In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the below question.

Can the infected cell survive while viruses are being replicated and released?

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