NEET-UG importance
Immunity pathogens vaccines is a useful scoring area because questions often test direct NCERT wording, process sequence, and the ability to separate close distractors. Keep the revision tight and practice with explanations after each attempt.
How to practice this topic
Read the NCERT section first, mark definitions and examples, then solve MCQs in short sets. After each wrong answer, rewrite the reason in one line so the concept becomes recallable before a mock test.
Core concepts to revise
- Revise the NCERT definitions first, then solve short concept-check MCQs.
- Mark examples and exceptions because NEET Biology questions often test exact wording.
- Review every wrong option after practice so close distractors become easier to eliminate.
Common NEET traps
- Do not rely on memorized keywords without checking the full statement.
- Separate NCERT-level facts from advanced details that are not needed for NEET-UG.
Example MCQs and explanations
The main defense against fungal infections in the body depends on
Answer: C. innate immunity
Fungal infections are primarily dealt with by the innate immune system, which includes physical and chemical barriers as well as non-specific cellular responses.
Practice this MCQThe main immune response against extracellular pathogens depends on
Answer: B. humoral immunity
Humoral immunity is primarily responsible for the defense against extracellular pathogens through antibodies produced by B cells.
Practice this MCQThe main defense against intracellular pathogens relies on
Answer: A. cellular immunity
Cellular immunity is crucial for defending against intracellular bacteria as it involves T cells that can directly kill infected cells. Humoral immunity, involving antibodies produced by B cells, primarily targets extracellular pathogens.
Practice this MCQPapain digestion of antibodies yields Fab which stands for
Answer: B. antigen combining fragment
Fab is the antigen combining fragment.
Practice this MCQWhich of the following is correct about thymus-dependent antigens?
Answer: B. require T cell assistance for stimulation of antibody production by B cells
Thymus-dependent antigens (TD-Ags) require T-cell assistance to stimulate antibody production by B cells.
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