DIT 121 Exam 2 Questions with Complete Solutions Metabolsim - Correct Answers ✅Metabolism is the sum total of all the chemical reactions that go on in living cells.They include all reactions by which the body obtains and expends the energy from food.
• Metabolism: energy nutrients broken down further into
energy (ATP), water and carbon dioxide.Anabolism - Correct Answers ✅Anabolism are the reactions in which small molecules are put together to build larger ones. Anabolic reactions require energy.Catabolism - Correct Answers ✅Catabolism are reactions in which large molecules are broken down into smaller ones.Catabolic reactions release energy.ATP - Correct Answers ✅ATP (Adenosine triphosphate) is a common high-energy compound composed of a purine (adenine) a sugar(ribose), and 3 phosphate groups.ADP - Correct Answers ✅ADP (Adenosine diphosphate) is an important organic compound in metabolism and is essential to the flow of energy in living cells.What are the unique chemical structures of triglycerides & proteins? - Correct Answers ✅-Triglycerides are the chief form of fat in the diet and the major storage form of fat in the 1 / 2
DIT 121 Exam 2 Questions with Complete Solutions body composed of a molecule of glycerol with 3 fatty acids attached.-A protein molecule is made from a long chain of amino acids that are linked though a peptide bond. Proteins are known as polypeptides.
- What form of energy is used in early (first 24 hrs) vs. late
- / 2
fasting? - Correct Answers ✅Fasting—Inadequate Energy • Brains wants glucose/glycogen • First 24 hr ~ glycogen • 24-48 hrs ~ glucose depleted; protein 90%/ fat 10% > 48 hrs ~ 90% fat; 10% protein Explain ketosis and its impact on the body. How is it reversed? - Correct Answers ✅Ketosis is and undesirably high concentration of ketone bodies in the blood and urine.Ketosis results from an inadequate amount of carbohydrates providing glucose to the brain. Fats will then form ketone bodies. They shift to the blood and cause ketosis. Ketosis disrupts the body's normal acid-base balance. To prevent ketosis the body needs at least 50-100 grams of carbs a day.How is excess energy stored in the body? - Correct Answers ✅-All energy-yielding nutrients consumed in excess can contribute to fat storage. When energy intake exceeds energy output, there is a gain in weight.• Excess energy can come from protein, fat or carbohydrate.