Metabolism Quiz Questions And Answers

The thermostat and food intake regulating center of the body is in the _________ of the brain. correct answer: hypothalamus The three key molecules of metabolism are __ , __ , and __. correct answer: glucose 6-phosphate,pyruvic acid,acetyl coenzyme A Foods that we eat are used to supply energy for life processes, serve as building blocks for synthesis reactions, or are stored for future use. correct answer: TRUE Vitamins A, B, D, and K are fat-soluble vitamins correct answer: FALSE Vitamins A, E, D, and K are fat-soluble vitamins correct answer: TRUE NAD+ and FAD (1) are both derivatives of B vitamins, (2) are used to carry hydrogen atoms released during oxidation reactions, (3) become NADH and FADH2 in their reduced forms, (4) act as coenzymes in the Krebs cycle, (5) are the final electron acceptors in the electron transport chain. correct answer: 1, 2, 3, and 4 During glycolysis, (1) a six-carbon glucose is split into two three-carbon pyruvic acids, (2) there is a net gain of two ATP molecules, (3) two NADH molecules are oxidized, (4) moderately high levels of oxygen are needed, (5) the activity of phosphofructokinase determines the rate of the chemical reactions. correct answer: 1, 2, and 5 If glucose is not needed for immediate ATP production, it can be used for (1) vitamin synthesis, (2) amino acid synthesis, (3) gluconeogenesis, (4) glycogenesis, (5) lipogenesis. correct answer: 2, 4, and 5 Which of the following is the correct sequence for the oxidation of glucose to produce ATP? correct answer: glycolysis, formation of acetyl CoA, Krebs cycle, electron transport chain