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View answerSLPaper 1A
A unicellular organism maintains internal pH after acidification, releases ammonia and increases dry mass without dividing. Which processes are shown?
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View answerSLPaper 1A
Cell P has naked circular DNA and cytosolic 70S ribosomes; Q has histone-bound linear DNA and cytosolic 80S ribosomes. A 70S inhibitor cannot enter organelles. Which prediction and classification are correct?
SLPaper 1A
At minute 5, plant cells in isotonic solution received cellulase (P) or a lipid solvent (Q). Which conclusion is supported?
SLPaper 1A
Entity X metabolizes and reproduces independently, but repeated microscopy shows no cellular organization. If X is accepted as living, what follows?
SLPaper 1A
A theoretical model predicts that all living organisms consist of one or more cells. What would most directly falsify this prediction?
IB Biology Topic A2.2 Cell Structure Questionbank
Practice IB Biology Topic A2.2 Cell Structure with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for A2.2 Cell Structure and mirrors Paper 1A, 1B, 2 style where relevant.
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