Practice IB Biology Topic 6.3 Defence Against Infectious Disease with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 6.3 Defence Against Infectious Disease and mirrors Paper 1A, 1B, 2 style where relevant.
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If the heart of a vertebrate is removed and placed in a solution of nutrients, it will continue to beat for many hours. Related to this, which of the following is true?
Label the diagram to show the structure that is involved in digestion of proteins in acid conditions (using the letter A).
Label the diagram to show the structure where most absorption of water to prevent dehydration occurs (using the letter B).
Label the diagram to show the structure where most absorption of nutrients occurs (using the letter C).
Explain how the structure of veins is adapted to their function.
Cells defend the body against pathogens. Outline how some of these cells ingest pathogens in the blood and in body tissues.
The body has different defenses against infectious disease. Which cells provide non-specific immunity?
How do phagocytic leucocytes help to protect against disease?
Which statement applies to HIV?
