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IB Biology HL B1.1 Carbohydrates and Lipids Question Bank

Practise IB Biology HL B1.1 with molecular diagrams and data questions that connect carbohydrate and lipid structure to digestion, storage, membranes and biological function.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • interpret molecular diagrams to identify glucose forms, condensation products, fatty-acid isomers and phospholipids
  • explain digestion and triglyceride formation by naming substrates, products, bonds and water changes in reactions
  • compare cellulose, glycogen and lipids using branching, glycosidic bonds, membrane orientation and energy data

Covered syllabus points

B1.1.1—Carbon atom propertiesB1.1.2—Macromolecules by condensationB1.1.3—Digestion by hydrolysisB1.1.4—Form and function of monosaccharidesB1.1.5—Polysaccharides as energy storageB1.1.6—Cellulose structure and functionB1.1.7—Glycoproteins in cell-cell recognitionB1.1.8—Hydrophobic properties of lipidsB1.1.9—Formation of triglycerides and phospholipidsB1.1.10—Fatty acidsB1.1.11—Triglycerides functionsB1.1.12—Phospholipid bilayersB1.1.13—Non-polar steroids

B1.1 Carbohydrates and lipids question 1

[Maximum number: 1]

What feature of carbon makes it most suitable as a basis for life?

A

Its abundance in nature

B

Its bonding properties

C

Its reactivity to light

D

Its presence in the early atmosphere of the Earth

B1.1 Carbohydrates and lipids question 2

[Maximum number: 1]

State the products of a condensation reaction between two amino acids.
amino acid + amino acid →

B1.1 Carbohydrates and lipids question 3

[Maximum number: 2]

Identify two hydrolysis reactions that occur in the small intestine.

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