Understanding Cellular Energy Production

What is the primary molecule used by cells to store and transfer energy?

• FADH2

• NADH

• Adenosine triphosphate (ATP)

• Glucose

Which process breaks down glucose into pyruvate and produces a net gain of two ATP molecules?

• Glycolysis

• Oxidative Phosphorylation

• Krebs Cycle

• Photosynthesis

Where does glycolysis occur within the cell?

• Nucleus

• Cytosol

• Mitochondria

• Endoplasmic Reticulum

What is the role of mitochondria in cellular energy production?

• To generate ATP through the Krebs Cycle and oxidative phosphorylation

• To produce proteins

• To store genetic information

• To transport molecules across the cell membrane

What is the main purpose of the Krebs Cycle?

• To break down fatty acids

• To produce ATP directly

• To generate NADH and FADH2 for the electron transport chain

• To synthesize glucose

What is the function of the electron transport chain in cellular respiration?

• To transport oxygen

• To transfer electrons and create a proton gradient for ATP synthesis

• To synthesize proteins

• To break down glucose

How many ATP molecules can be produced from one molecule of glucose under optimal conditions?

• 38

• 2

• 12

• 24

What is the storage form of glucose in the body?

• Starch

• Glycogen

• Sucrose

• Cellulose

How does the ATP yield from fat compare to that from glucose?

• Fat does not yield ATP

• Fat yields more ATP than glucose

• Fat yields the same amount of ATP as glucose

• Fat yields less ATP than glucose

What is the primary advantage of storing energy as fat rather than glucose?

• Fat is easier to digest

• Fat provides more ATP per gram

• Fat is less dense

• Fat is more readily available