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AP Biology 1.3 Introduction to Macromolecules Questions

Practise AP Biology 1.3 questions by explaining how hydrolysis and dehydration synthesis use water differently to break or build biological polymers.

Syllabus
Effective Fall 2025
Course
AP Biology

Exam points

  • explain hydrolysis as water addition that breaks covalent bonds in biological polymers
  • explain dehydration synthesis as water removal that builds polymer covalent bonds
  • apply hydrolysis and dehydration stoichiometry to ATP, peptides and carbohydrate polymers

Covered syllabus points

1.3.A—Describe the chemical reactions that build and break biological macromolecules

Question 1

[Maximum number: 1]

To investigate how increases in environmental temperatures affect the metabolism of certain organisms, researchers incubated liver cells from toads at different temperatures and measured two markers of metabolic activity (Table 1): the rate of oxygen consumption and the rate of ATP synthesis.

Describe the role of water in the hydrolysis of ATP.

TABLE 1. RATE OF OXYGEN CONSUMPTION AND ATP SYNTHESIS AT DIFFERENT TEMPERATURES

TABLE 1. RATE OF OXYGEN CONSUMPTION AND ATP SYNTHESIS AT DIFFERENT TEMPERATURES

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