Biology

What is cellular respiration?

• a) A process that converts light energy into chemical energy.
• b) The breakdown of glucose into pyruvate.
• c) The synthesis of complex molecules from simpler ones.
• d) The metabolic process of converting nutrients into energy (ATP).

Where does glycolysis occur in the cell?

• a) Nucleus
• b) Mitochondria
• c) Cytoplasm
• d) Golgi apparatus

What is the end product of glycolysis?

• a) Carbon dioxide
• b) Oxygen
• c) Pyruvate
• d) Glucose

Which stage of cellular respiration produces the most ATP?

• a) Glycolysis
• b) Krebs cycle
• c) Oxidative phosphorylation
• d) Anabolism

What is oxidative phosphorylation?

• a) The synthesis of glucose from carbon dioxide and water.
• b) The breakdown of pyruvate into acetyl-CoA.
• c) The process of using oxygen to generate ATP from electron transport chain.
• d) The conversion of ATP into ADP.

What is the Krebs cycle also known as?

• a) Citric acid cycle
• b) Glycogenesis
• c) Electron transport chain
• d) Lactic acid fermentation

What is the primary function of anabolism in living organisms?

• a) Breaking down molecules for energy release.
• b) Synthesizing complex molecules from simpler ones.
• c) Producing carbon dioxide as a waste product.
• d) Facilitating glycolysis.

Which molecule serves as the primary energy carrier in cells?

• a) DNA
• b) RNA
• c) ATP
• d) NADH

What happens when ATP is broken down into ADP and inorganic phosphate?

• a) Energy is released.
• b) Energy is absorbed.
• c) Carbon dioxide is produced.
• d) Water is formed.

What is the ultimate source of energy for most living organisms on Earth?

• a) Sunlight
• b) Oxygen
• c) Carbon dioxide
• d) Water