Cellular Energy and Enzyme Functions

The video tutorial explains metabolic processes, focusing on anabolic and catabolic reactions, and the role of ATP and ADP in energy transfer. It covers how enzymes catalyze reactions by lowering activation energy, and details the Calvin cycle in photosynthesis and glycolysis in cellular respiration.

What type of reaction involves the building of molecules and requires energy?

• Catabolic reaction

• Spontaneous reaction

• Anabolic reaction

• Exergonic reaction

Which molecule is known as the energy currency of the cell?

• NADPH

• ADP

• ATP

• G3P

What happens when a phosphate bond in ATP is broken?

• ATP is converted to glucose

• ATP is converted to NADPH

• Energy is released

• Energy is absorbed

What is the role of enzymes in chemical reactions?

• They change the reaction products

• They are consumed in the reaction

• They lower the activation energy

• They increase the activation energy

What is the specific region of an enzyme where the substrate binds called?

• Reaction site

• Binding site

• Active site

• Catalytic site

Which enzyme catalyzes the Calvin cycle?

• Lactate dehydrogenase

• ATP synthase

• Glycogen synthase

• RuBisCO

What is the main purpose of the Calvin cycle?

• To convert ATP to ADP

• To fix carbon dioxide into organic compounds

• To release energy

• To break down glucose

What is the first step of cellular respiration?

• Calvin cycle

• Glycolysis

• Krebs cycle

• Electron transport chain

During glycolysis, glucose is broken down into which compound?

• Lactate

• Pyruvate

• G3P

• RuBP

What is the net gain of ATP molecules in glycolysis?

• Four ATP

• One ATP

• Three ATP

• Two ATP