AP®︎ Biology: Topic 3.3 Practice Test
Prepare for your quiz, test, or the AP exam with focused practice questions on Topic 3.3 of AP Biology – Cellular Energy.
Questions List
Topic 3.3
Question 1 Easy
This question tests the following: ENE-1.F
What happens to an enzyme when it is denatured?
What You’re Being Tested On:
Explore the learning objectives taken directly from the College Board’s AP® Biology Curriculum. Ensure you’re prepared for the exact topics covered on the AP® exam, in-class tests, and quizzes, and gain confidence in your mastery of the material.
Topic 3.3: Cellular Energy
Learning Objective: 3.3.A
Describe the role of energy in living organisms.
Essential Knowledge: 3.3.A.1
All living systems require an input of energy.
Essential Knowledge: 3.3.A.2
Life requires a highly ordered system and does not violate the first and second laws of thermodynamics. i. Energy input must exceed energy loss to maintain order and to power cellular processes. ii. Cellular processes that release energy may be coupled with cellular processes that require energy. iii. Significant loss of order or energy flow results in death. Exclusion: Students will need to understand the concept of energy, but the equation for Gibbs free energy is beyond the scope of the AP Exam.
Essential Knowledge: 3.3.A.3
Energy-related pathways in biological systems are sequential to allow for a more controlled transfer of energy. A product of a reaction in a metabolic pathway is typically the reactant for the subsequent step in the pathway.
Learning Objective: 3.3.B
Explain how shared, conserved, and fundamental processes and features support the concept of common ancestry for all organisms.
Essential Knowledge: 3.3.B.1
Core metabolic pathways (e.g., glycolysis, oxidative phosphorylation) are conserved across all currently recognized domains (Archaea, Bacteria, and Eukarya).
