Unit 3 AP Biology Insta-Review (Cellular Energetics)

Front

Where was oxygen initially formed?

Back

Oxygen was initially formed in the ocean.

Front

Where does the Krebs Cycle take place?

Back

The Krebs Cycle takes place in the matrix of the mitochondria.

Front

Where do the light-independent reactions take place?

Back

The light-independent reactions take place in the stroma of the chloroplasts.

Front

Where are the electrons pumped during the electron transport chain in the mitochondria?

Back

Electrons are pumped into the intermembrane space of the mitochondria.

Front

Which direction are hydrogen ions pumped for the electron transport chain in photosynthesis?

Back

Hydrogen ions are pumped into the thylakoid space.

Front

What is the main function of the Krebs Cycle?

Back

The main function of the Krebs Cycle is to produce energy carriers (NADH and FADH2) and carbon dioxide from the oxidation of acetyl-CoA.

Front

What is the role of the electron transport chain?

Back

The electron transport chain transfers electrons from NADH and FADH2 to oxygen, creating a proton gradient that drives ATP synthesis.

Front

What is ATP and why is it important?

Back

ATP (adenosine triphosphate) is the primary energy carrier in cells, providing energy for various cellular processes.

Front

What are the two main stages of photosynthesis?

Back

The two main stages of photosynthesis are the light-dependent reactions and the light-independent reactions (Calvin cycle).

Front

What is the significance of the thylakoid membrane in photosynthesis?

Back

The thylakoid membrane houses the components for the light-dependent reactions, including chlorophyll and the electron transport chain.