BIOL 1408 exam 2 Questions and Answers 2024 update

BIOL 1408 exam 2 Questions and Answers 2024 update BIOL 1408 exam 2 Questions and Answers 2024 update Points Awarded 47.00 Points Missed 3.00 Percentage 94.0% 1. A scientist claims to have created a machine that can run forever, therefore producing as much energy as it consumes. This claim violates: A) The first law of thermodynamics B) The second law of thermodynamics C) The third law of thermodynamics D) The law of endergonic reactions E) The law of exergonic reactions 2. Why is ATP used as the energy currency in cells? A) ATP carries a positive charge B) ATP contains energy stored in the phosphate bonds C) ATP is made directly from glucose D) ATP is a macromolecule E) ATP is made from lipids ATP is made up of: A) Adenine, ribose, and one phosphate B) Adenine, ribose, and three phosphates C) Adenine and three phosphate groups D) Adenine and two phosphate groups E) Adenine and one phosphate group Which of the following statements about enzymes is false? A) They speed up chemical reactions. B) They are not reusable. C) They are proteins. D) They are reusable. E) They are considered organic catalysts. How can enzymes speed up chemical reactions? A) They lower the rate of ATP breakdown in the reaction. B) They increase the amount of substrate in the reaction. C) They lower the activation energy needed for the reaction. D) They increase the pH of the reaction. E) They lower the temperature of the reaction. 6. This figure shows an enzyme in action. What does "A" represent? A) The active site B) The enzyme-substrate complex C) A polypeptide D) The substrate E) The products 7. This figure shows an enzyme in action. What does "C" represent? A) A polypeptide B) The active site C) The substrate D) The enzyme-substrate complex E) The products What does "B" represent in the diagram of the plasma membrane? A) hydrophilic heads B) peripheral protein C) phospholipids bilayer D) cytoskeleton E) glycolipid What does "E" represent in the diagram of the plasma membrane? A) cytoskeleton B) peripheral protein C) phospholipids bilayer D) hydrophilic heads E) glycolipid