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Edexcel A-Level Biology AS 1.5 Triglycerides and Saturated or Unsaturated Lipids Questions

Practise describing triglycerides as glycerol joined to fatty acids, comparing saturated and unsaturated chains, and distinguishing phospholipids with marked evidence.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Describe a triglyceride as glycerol joined to three fatty acids by ester bonds.
  • Compare saturated and unsaturated fatty acids through carbon-carbon double bonds and carbon-to-hydrogen ratio.
  • Distinguish triglycerides from phospholipids using fatty acids and phosphate groups.

Edexcel A-Level Biology AS 1.5 Triglycerides and Saturated or Unsaturated Lipids Questions question 1

[Maximum number: 1]

The butterfly is an insect that feeds on nectar produced by flowers.
The photograph shows a butterfly feeding on a flower.

Figure for Question Edexcel A-Level Biology AS 1.5 Triglycerides and Saturated or Unsaturated Lipids Questions question 1 — Edexcel A-Level Biology AS

The nectar in flowers contains nutrients including sugars, amino acids and lipids.

Which row of the table describes a saturated lipid?
□ A
□ B
□ C
□ D

Table for Question Edexcel A-Level Biology AS 1.5 Triglycerides and Saturated or Unsaturated Lipids Questions question 1 — Edexcel A-Level Biology AS
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