Practice IB Biology Topic 6.1 Digestion and Absorption with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 6.1 Digestion and Absorption and mirrors Paper 1A, 1B, 2 style where relevant.
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The graph shows the amounts of two substances present in food ingested by a healthy person as it moves along the gut.
Which substances could X and Y be?
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.
What is the importance of excretion to a living organism?
Which gas produces most of the bubbles in bread dough?
List the general functions of non-membrane proteins.
Outline the digestion, absorption and assimilation of proteins in humans.
Actin and myosin are two proteins found in muscles. Explain how skeletal muscle contracts, including the interaction of these proteins.
