IB BIOLOGY EXAM SCRIPT 2026
COMPLETE QUESTIONS AND CORRECT
ANSWERS GRADED A+
●● Striated Muscle
Answer: Long Cells, (300 mm), multiple nuclei, questions cell theory
●● Acetate Fungal Hyphae
Answer: challenges idea that cell is a single unit, multi-nucleated, and
continuous cytoplasm. Cell walls composed of Chitin
●● giant algae
Answer: challenges that notion that cells must be small, and simple in
structure. Size of 5-100mm and complex in form.
●● response
Answer: Living things can respond to and interact with the environment
●● Homeostasis
Answer: The maintenance and regulation of internal cell conditions, e.g.
water and pH
, ●● Growth
Answer: Living things can grow/change
●● excretion
Answer: removal of metabolic waste
●● reproduction
Answer: living things produce offspring, sexually or asexually
●● nutrition
Answer: feeding by either the synthesis of organic molecules (e.g.
photosynthesis) or the absorption of organic matter
●● SA to Volume Ratio
Answer: A larger SA:Vol ratio can mean that a cell can act more
efficiently. For every unit of volume that requires nutrients or produces
waste. There is more membrane to serve it
●● How to maximize SA to Vol ratio?
Answer: Cells divide, They use membranes to carry out processes,
organs will fold up to maximize the ratio
●● Rate of Metabolism
COMPLETE QUESTIONS AND CORRECT
ANSWERS GRADED A+
●● Striated Muscle
Answer: Long Cells, (300 mm), multiple nuclei, questions cell theory
●● Acetate Fungal Hyphae
Answer: challenges idea that cell is a single unit, multi-nucleated, and
continuous cytoplasm. Cell walls composed of Chitin
●● giant algae
Answer: challenges that notion that cells must be small, and simple in
structure. Size of 5-100mm and complex in form.
●● response
Answer: Living things can respond to and interact with the environment
●● Homeostasis
Answer: The maintenance and regulation of internal cell conditions, e.g.
water and pH
, ●● Growth
Answer: Living things can grow/change
●● excretion
Answer: removal of metabolic waste
●● reproduction
Answer: living things produce offspring, sexually or asexually
●● nutrition
Answer: feeding by either the synthesis of organic molecules (e.g.
photosynthesis) or the absorption of organic matter
●● SA to Volume Ratio
Answer: A larger SA:Vol ratio can mean that a cell can act more
efficiently. For every unit of volume that requires nutrients or produces
waste. There is more membrane to serve it
●● How to maximize SA to Vol ratio?
Answer: Cells divide, They use membranes to carry out processes,
organs will fold up to maximize the ratio
●● Rate of Metabolism
