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AP Biology 1.3.A Macromolecule-Building Reactions

Practise AP Biology 1.3.A questions by distinguishing hydrolysis from dehydration synthesis and tracking how water changes covalent bonds between monomers.

Syllabus
Effective Fall 2025
Course
AP Biology

Exam points

  • identify water addition as hydrolysis that cleaves ATP or carbohydrate covalent bonds
  • identify water removal as dehydration synthesis joining monomers into polymers

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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