Exploring AP Bio Unit 3 Concepts

Dr. H reviews cellular energetics, covering enzymes, energy concepts, photosynthesis, and cellular respiration. The video emphasizes the importance of understanding these processes for upcoming tests. Key topics include thermodynamics, Delta G, enzyme functions, photosynthesis stages, and cellular respiration pathways, including glycolysis and fermentation.

What type of reaction occurs when energy is released and Delta G is negative?

• Endergonic reaction

• Exergonic reaction

• Equilibrium reaction

• Thermodynamic reaction

What is the primary form of energy used by cells?

• Glucose

• Carbon dioxide

• ATP

• NADPH

Which molecule stabilizes the transition state to lower activation energy?

• Substrate

• ATP

• Enzyme

• Product

What is the main site of photosynthesis in plants?

• Flowers

• Leaves

• Stems

• Roots

What are the products of the light-dependent reactions of photosynthesis?

• Carbon dioxide, ATP, and NADPH

• Oxygen, ATP, and NADPH

• Carbon dioxide, Glucose, and NADPH

• Oxygen, Glucose, and ATP

What does the Calvin cycle produce?

• Oxygen

• ATP

• NADPH

• G3P

What is the role of ATP synthase?

• To produce oxygen

• To capture light energy

• To synthesize ATP

• To break down glucose

During cellular respiration, what is the main purpose of the electron transport chain?

• To generate ATP

• To consume carbon dioxide

• To produce glucose

• To create a protein gradient

What happens to pyruvate in the absence of oxygen?

• It forms ethanol

• It is excreted as waste

• It forms lactate

• Both A and C

Which process does not directly produce ATP?

• Electron Transport Chain

• Krebs Cycle

• Glycolysis

• Fermentation