Cellular Respiration and Fermentation

What is cellular respiration?

• A process that converts sunlight into chemical energy

• A method of cell division

• The process by which cells break down glucose and other organic molecules to produce ATP, the energy currency of the cell.

• A way for cells to eliminate waste products.

What is the Krebs Cycle also known as?

• Citric Acid Cycle

• Glycolysis

• Electron Transport Chain

• Fermentation

What is the role of oxygen in cellular respiration?

• Oxygen is used to break down glucose into pyruvate.

• Oxygen acts as the final electron acceptor in the Electron Transport Chain, allowing for the production of ATP.

• Oxygen is converted into carbon dioxide during glycolysis.

• Oxygen is not involved in cellular respiration.

What is the primary purpose of the Electron Transport Chain (ETC)?

• To produce the most ATP by transferring electrons through a series of proteins.

• To break down glucose into pyruvate.

• To synthesize fatty acids from acetyl-CoA.

• To convert light energy into chemical energy.

What are the byproducts of cellular respiration?

• Oxygen (O2) and glucose (C6H12O6)

• Carbon dioxide (CO2) and water (H2O)

• Nitrogen (N2) and ammonia (NH3)

• Hydrogen (H2) and ethanol (C2H5OH)

What are the main stages of cellular respiration?

• Glycolysis, Krebs Cycle, Electron Transport Chain

• Photosynthesis, Glycolysis, Fermentation

• Glycolysis, Calvin Cycle, Krebs Cycle

• Electron Transport Chain, Glycolysis, Lactic Acid Cycle

What is the significance of the inner membrane of the mitochondria?

• It regulates the entry and exit of substances in the mitochondria.

• It contains the proteins and enzymes necessary for the Electron Transport Chain and ATP synthesis.

• It is involved in the replication of mitochondrial DNA.

• It serves as a barrier to protect the mitochondria from oxidative stress.

What is ATP?

• A type of protein involved in cellular structure.

• A molecule that stores and transfers energy in cells.

• A carbohydrate that provides energy to cells.

• A lipid that forms cell membranes.

Where does glycolysis occur in the cell?

• In the mitochondria

• In the nucleus

• In the cytoplasm

• In the endoplasmic reticulum

How does fermentation differ from cellular respiration?

• Fermentation occurs in the presence of oxygen and produces more ATP than cellular respiration.

• Fermentation occurs in the absence of oxygen and produces less ATP compared to cellular respiration.

• Fermentation and cellular respiration are identical processes with no differences.

• Fermentation requires oxygen and produces carbon dioxide, while cellular respiration does not.