AP Biology Unit 3: Cellular Energetics

Front

What is cellular energetics?

Back

Cellular energetics is the study of how cells obtain and use energy to perform work, including processes like metabolism, respiration, and photosynthesis.

Front

What is the role of enzymes in metabolic reactions?

Back

Enzymes are biological catalysts that speed up metabolic reactions by lowering the activation energy required for the reaction to occur.

Front

What is the optimal temperature for enzyme activity?

Back

The optimal temperature is the temperature at which an enzyme's activity is highest, often varying for different enzymes.

Front

What is an endergonic reaction?

Back

An endergonic reaction is a chemical reaction that requires energy input to proceed, resulting in products with higher energy than the reactants.

Front

What is an exergonic reaction?

Back

An exergonic reaction is a chemical reaction that releases energy, resulting in products with lower energy than the reactants.

Front

What are the net products of photosynthesis?

Back

The net products of photosynthesis are glucose (C6H12O6) and oxygen (O2).

Front

What is the significance of pH in enzyme activity?

Back

pH affects enzyme shape and function; each enzyme has an optimal pH range where it functions best.

Front

What is the role of ATP in cellular processes?

Back

ATP (adenosine triphosphate) serves as the primary energy currency of the cell, providing energy for various cellular processes.

Front

What is the difference between aerobic and anaerobic respiration?

Back

Aerobic respiration requires oxygen and produces more energy (ATP) than anaerobic respiration, which occurs without oxygen.

Front

What is the function of chlorophyll in photosynthesis?

Back

Chlorophyll is a pigment that absorbs light energy, primarily from the sun, which is used to convert carbon dioxide and water into glucose during photosynthesis.