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B1.1.11—Triglycerides functions

Triglycerides store concentrated long-term energy because they are insoluble, stable, compact, and rich in energy-yielding carbon-hydrogen bonds within adipose tissue.

Syllabus
First assessment 2025
Objective
B1.1.11
Level
SL

Exam analysis

Chance of appearing5%of analysed past papers
Latest appearanceMay 2025
Most common paperPaper1
Typical marks1–2

Common command terms

  • Explain
  • Outline
  • State

Scoring notes

Common mistake
Saying lipids are more efficient because they are easier to transport than carbohydrates.

Recent exam appearances

May 2025Paper2 ["SL"] · TZ32(d)[ 2 ]B1.1.11—Triglycerides functions
May 2024Paper2 ["SL"] · TZ16(a)[ 4 ]B1.1.11—Triglycerides functions
May 2022Paper1 ["SL"] · TZ28[ 1 ]B1.1.11—Triglycerides functions
November 2019Paper1 ["SL"] · TZ07[ 1 ]B1.1.11—Triglycerides functions
November 2018Paper2 ["SL"] · TZ02(c)[ 2 ]B1.1.11—Triglycerides functions
Practice this objective

Coverage 2013–2025 · Updated 15 Jul 2026

Concept essentials

  • Triglycerides store more energy per gram than carbohydrates.
  • Adipose tissue is a major long-term lipid store in humans.
  • Insolubility prevents triglyceride stores from causing strong osmotic effects.
  • Stored lipids can also provide thermal insulation and cushioning.
ConceptIB Biology SL