Animal Energetics mcqs January 8, 2026April 6, 2024 by u930973931_answers 15 min Score: 0 Attempted: 0/15 Subscribe 1. What is animal energetics? (A) The study of animal behavior (B) The study of animal anatomy and physiology (C) The study of animal genetics and heredity (D) The study of energy flow and metabolism in animals 2. Which of the following is the primary source of energy for most animals? (A) Lipids (fats) (B) Proteins (C) Carbohydrates (D) Nucleic acids 3. What is the main function of cellular respiration in animals? (A) To produce glucose for energy (B) To synthesize proteins (C) To store energy in the form of ATP (D) To break down glucose to release energy 4. Which organelle is primarily responsible for cellular respiration in animal cells? (A) Mitochondria (B) Golgi apparatus (C) Nucleus (D) Endoplasmic reticulum 5. What is the ultimate product of cellular respiration in animals? (A) Carbon dioxide (B) Oxygen (C) Glucose (D) Water 6. Which process is responsible for the conversion of food into usable energy in animals? (A) Photosynthesis (B) Cellular respiration (C) Fermentation (D) Glycolysis 7. What is the primary function of glycolysis in cellular respiration? (A) To break down glucose into pyruvate (B) To produce ATP (C) To generate carbon dioxide (D) To synthesize glucose from pyruvate 8. Which molecule carries high-energy electrons produced during glycolysis and the Krebs cycle to the electron transport chain? (A) FADH2 (B) NAD+ (C) ATP (D) Pyruvate 9. How many molecules of ATP are generated from the complete oxidation of one molecule of glucose during cellular respiration? (A) 38 (B) 4 (C) 36 (D) 2 10. What is the primary function of the electron transport chain in cellular respiration? (A) To synthesize glucose (B) To produce ATP (C) To generate carbon dioxide (D) To convert pyruvate to lactate 11. Which process occurs in the absence of oxygen and results in the production of lactate or ethanol? (A) Krebs cycle (B) Glycolysis (C) Electron transport chain (D) Oxidative phosphorylation 12. What is the main purpose of the Krebs cycle in cellular respiration? (A) To generate carbon dioxide and high-energy electrons (B) To convert glucose to pyruvate (C) To produce ATP (D) To synthesize proteins 13. Which of the following is NOT a factor influencing an animal’s metabolic rate? (A) Atmospheric pressure (B) Environmental temperature (C) Gender (D) Body size 14. What is basal metabolic rate (BMR)? (A) The metabolic rate during activity (B) The metabolic rate during hibernation (C) The metabolic rate during digestion (D) The metabolic rate at rest under standard conditions 15. Which of the following animals typically has the highest metabolic rate per unit mass? (A) Small mammals (B) Large mammals (C) Birds (D) Reptiles