AP Biology: Unit 3 Review (CED)

Front

What effect does an increase in temperature have on reaction rates?

Back

An increase in temperature increases the speed/kinetic energy of particles, leading to more frequent and effective collisions.

Front

Where does the electron transport chain occur in eukaryotic cells?

Back

The electron transport chain occurs in the mitochondria.

Front

Where does the electron transport chain occur in prokaryotic cells?

Back

The electron transport chain occurs in the prokaryotic plasma membrane.

Front

What is the pathway of electrons in the light reactions of photosynthesis?

Back

H₂O → PSII → ETC → PSI → NADPH

Front

What factors can increase the rate of a biochemical reaction?

Back

Increasing the concentration of substrate or enzyme can increase the rate of the reaction.

Front

What is energy coupling in biochemical reactions?

Back

Energy coupling is the process where an endergonic reaction is fueled by an exergonic reaction.

Front

What is the role of enzymes in biochemical reactions?

Back

Enzymes act as catalysts to speed up reactions by lowering the activation energy.

Front

What is the difference between endergonic and exergonic reactions?

Back

Endergonic reactions require energy input, while exergonic reactions release energy.

Front

What is the significance of the active site of an enzyme?

Back

The active site is where substrate molecules bind and undergo a chemical reaction.

Front

How does temperature affect enzyme activity?

Back

Increased temperature generally increases enzyme activity up to a certain point, beyond which the enzyme may denature.