IB BIOLOGY COMPREHENSIVE EXAM
SCRIPT 2026 FULL QUESTIONS AND
CORRECT ANSWERS
◉uracil. Answer: In RNA molecules, adenine is complementary to
◉saturated lipid. Answer: Straight and solid, saturated with oxygen,
no double bonds between adjacent carbons, solid at room
temperature
◉unsaturated lipid. Answer: Lipids formed from fatty acids in which
there is one or more double or triple bonds (with fewer H atoms).
Usually liquids at room temperature; most are plant oils.
◉amino acid. Answer: Building blocks of protein
◉resolution. Answer: degree to which it is possible to distinguish
between two objects that are close together
, ◉magnification. Answer: degree which the size of the image is larger
than itself
◉phosphorus. Answer: -makes up ATP
-Nucleic acid and phospholipid in membrane
◉specificity. Answer: Biological specificity is most pronounced and
best understood at the cellular and molecular levels of organization,
where the shapes of individual molecules allow them to selectively
recognize and bind to one another.
Enzymes catalyze one particular substrate or a small number of
structurally similar substrates
◉enzyme. Answer: A type of protein that speeds up a chemical
reaction in a living thing
◉pH. Answer: An organism's physical appearance, or visible traits.
◉substrate. Answer: A specific reactant acted upon by an enzyme
◉solute. Answer: A substance that is dissolved in a solution.
SCRIPT 2026 FULL QUESTIONS AND
CORRECT ANSWERS
◉uracil. Answer: In RNA molecules, adenine is complementary to
◉saturated lipid. Answer: Straight and solid, saturated with oxygen,
no double bonds between adjacent carbons, solid at room
temperature
◉unsaturated lipid. Answer: Lipids formed from fatty acids in which
there is one or more double or triple bonds (with fewer H atoms).
Usually liquids at room temperature; most are plant oils.
◉amino acid. Answer: Building blocks of protein
◉resolution. Answer: degree to which it is possible to distinguish
between two objects that are close together
, ◉magnification. Answer: degree which the size of the image is larger
than itself
◉phosphorus. Answer: -makes up ATP
-Nucleic acid and phospholipid in membrane
◉specificity. Answer: Biological specificity is most pronounced and
best understood at the cellular and molecular levels of organization,
where the shapes of individual molecules allow them to selectively
recognize and bind to one another.
Enzymes catalyze one particular substrate or a small number of
structurally similar substrates
◉enzyme. Answer: A type of protein that speeds up a chemical
reaction in a living thing
◉pH. Answer: An organism's physical appearance, or visible traits.
◉substrate. Answer: A specific reactant acted upon by an enzyme
◉solute. Answer: A substance that is dissolved in a solution.
