logo

Learning objective

Recognize that large molecules are formed from smaller ones, specifically: (a) starch, glycogen, and cellulose are derived from glucose; (b) proteins are constructed from amino acids; (c) fats and oils are created from fatty acids and glycerol.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Combined ScienceBiological moleculesCore content

Study support

Understand this objective

Quick explanation

Recognize that large molecules are formed from smaller ones, specifically: (a) starch, glycogen, and cellulose are derived from glucose; (b) proteins are constructed from amino acids; (c) fats and oils are created from fatty acids and glycerol

  • This point belongs to Biological molecules, especially Biological molecules outcomes.
  • You need to be able to recognize that large molecules are formed from smaller ones, specifically: (a) starch, glycogen, and cellulose are derived from glucose; (b) proteins are constructed from amino acids; (c) fats and oils are created from fatty acids and glycerol.
  • The key ideas to know are State and Explain.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

StateExplain

Why it matters

This objective helps connect Biological molecules outcomes to exam-style questions, flashcards, and revision notes for Biological molecules.

Revision tools

Choose how to practise

Back to topic hub
Flashcards10 linked cards

Flashcard 1 of 10

Press Space to flip, arrows to move
Practice Questions7 linked questions

Question 1 of 7

Choose an answer, get feedback, then move sideways through the set.

0 of 5 attempted

Paper 3 structured question: Biological molecules

Paper 3Theory (Core)2 marks

Description

Large Biological Molecules

Large molecules such as starch, glycogen, cellulose, proteins, and fats are crucial for various biological functions.

  1. a

    Describe the relationship between glucose and starch.

    Aim for approximately 2 distinct marking points.

    [2]
Revision notestopic notes

Open the full topic revision notes when you are ready to review this objective in context.

Open revision notes

Related learning objectives

Revision hubs

Move back to a broader study route