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IB Biology HL B1.1.9 Triglycerides and Phospholipids Question Bank

Practise IB Biology HL B1.1.9 by interpreting lipid diagrams and identifying glycerol, fatty acids, phospholipids and condensation bonds.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Deduce glycerol, fatty-acid and phospholipid components from molecular diagrams.
  • Annotate triglyceride formation by locating condensation bonds and identifying reaction chemistry.

B1.1.9—Formation of triglycerides and phospholipids question 1

[Maximum number: 2]

A triglyceride is shown.

Figure for Question B1.1.9—Formation of triglycerides and phospholipids question 1 — IB Biology HL

Question (a)

(a)

State the two types of molecules that combine to make a triglyceride.

[ 1 ]

Question (b)

(b)

Annotate the diagram, using an arrow to show where a condensation bond has formed during formation of the triglyceride.

[ 1 ]
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