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Human Health and Disease
Differentiate between active immunity and passive immunity.

Differentiate between active immunity an | Class 12 Biology Chapter Human Health and Disease, Human Health and Disease NCERT Solutions

Welcome to the NCERT Solutions for Class 12 Biology - Chapter Human Health and Disease. This page offers a step-by-step solution to the specific question from Exercise 0, Question 1: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 1:

Differentiate between active immunity and passive immunity.

Answer:

Difference between active immunity and passive immunity are as follows:

Active immunity	Passive immunity
It is developed due to contact with pathogen or its antigen.	It is developed when ready- made antibodies are injected into the body.
It has no side effects.	It may cause a reaction.
It is slow but long lasting.	It is fast but lasts only for few days.
It takes time to develop its response.	It is used when the immune response has to be faster.
Immunity is said to be active when person’s own cells produce antibodies in response to infections or vaccination.	Immunity is said to be passive when antibodies are produced in other organisms are injected into person to person to counteract antigen such as snake venom.
E.g. vaccination for polio etc.	E.g. administration of tetanus antitoxins etc.

Other Questions of Chapter Human Health and Disease

What is the basic principle of vaccination? How do vaccines prevent microbial infections? Name the organism from which hepatitis B Vaccine is produced.

Q: Draw a well-labelled diagram of an antibody molecule.

What are the methods of cancer detection? Describe the common approaches for treatment of cancer.

From which plant cannabiniods are obtained? Name any two cannabinoids. Which part of the body is effected by consuming these substances?

The harmful allele of sickle cell anemia has not been eliminated from human population. Such afflicted people derive some other benefit. Discuss.

Q: How is a cancerous cell different from a normal cell?

Q: In which way has the study of biology helped us to control infectious diseases?

Q: What measure would you take to prevent water-borne diseases?

Q: How does the transmission of each of the following diseases take place?
(a) Amoebiasis
(b) Malaria
(c) Ascariasis
(d) Pneumonia

Differentiate between benign tumor and malignant tumor.

Popular questions of class 12 Biology

Q: What is spermatogenesis? Briefly describe the process of spermatogenesis.

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Q: Write a short note on
(a) Adaptations of desert plants and animals
(b) Adaptations of plants to water scarcity
(c) Behavioural adaptations in animals
(d) Importance of light to plants
(e) Effect of temperature or water scarcity and the adaptations of animals.

Q: With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.

Q: What is DNA fingerprinting? Mention its application.

Q: What is oogenesis? Give a brief account of oogenesis.

Q: Describe the structure of a seminiferous tubule.

Q: What is triple fusion? Where and how does it take place? Name the nuclei involved in triple fusion.

Q: With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.

Q: Explain the Law of Dominance using a monohybrid cross.

Recently Viewed Questions of Class 12 Biology

Taking examples under each category, discuss upstream and downstream processing.

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What is the main idea behind “Joint Forest Management Concept” introduced by the Government of India?

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Q: If a population growing exponentially double in size in 3 years, what is the intrinsic rate of increase (r) of the population?

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Which type of food would have lactic acid bacteria. Discuss their useful application.

Give the full form of ELISA. Which disease can be detected using it? Discuss the principle underlying the test.

Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

Read the question carefully and focus on the core concept being asked.
Reference examples and data from the chapter when answering questions about Human Health and Disease.
Review previous year question papers to get an idea of how such questions may be framed in exams.
Practice answering questions within the time limit to improve your speed and accuracy.
Discuss your answers with your teachers or peers to get feedback and improve your understanding.

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