BIOD 171 Essential Microbiology Portage Learning Module 2

Score for this quiz: 96 out of 100 Submitted Nov 27 at 2pm This attempt took 32 minutes. Anabolism is the process of building up or biosynthesis of macromolecules from small molecular units into much larger complexes. Your Answer: Anabolism is the process of building up smaller molecules units into larger complexes. Define anabolism. 5 / 5 pts Question 4 A cofactor is a small chemical component that assists an enzyme during the catalysis reactions. A cofactor is usually metal ions. Your Answer: A cofactor is a small chemical component that assist enzymes during catalysis reaction. A general example of a cofactor is metal ions. What is a cofactor? And give a general example. 5 / 5 pts Question 3 Question 5 5 / 5 pts In order to convert proteins into amino acids which metabolic process would be active? Your Answer: In order to convert proteins into amino acids, catabolism would be active because it will break the proteins into the amino acids. Catabolism would be active as proteins are made up of amino acids. Therefore the process described (proteins into amino acids) is the breakdown, or catabolism of protein. Question 6 10 / 10 pts Describe the energy transfer process relative to both ATP and ADP. Your Answer: The energy transfer process relative to both ATP and ADP is that ATP has energy (phosphate) to donate, while ADP can accept energy (phosphate group) to become ATP. ATP has the energy (phosphate group) to donate while ADP can accept energy in the form of a phosphate group. Thus, ATP can be reduced (ATP ADP + Pi) while ADP can be built into ATP (ADP + Pi ATP). Lithotroph Your Answer: Litotroph An organism that derives its energy by removing electrons from elemental sulfur would be classified as a ? 2 / 2 pts Question 8 This phosphorylation process occurs in the mitochondria of chemotropic eukaryotes. 2 / 2 pts Question 9 Chemotrophs acquire energy from preformed chemicals found in the environment. Your Answer: Autotroph From what source do chemotrophs acquire energy? 0 / 2 pts Question 7 The breakdown of glucose goes through (1) Glycolysis then (2) Fermentation or Respiration and finally through (3) the electron transport chain (ETC). Your Answer: The catabolism of a single molecule of glucose goes through the following: 1. Glycolysis 2. Fermentation or Respiration 3. Electron Transport Chain The catabolism of a single molecule of glucose goes through what 3 distinct transitions? 5 / 5 pts Question 10 What is the most energetic transition in the catabolism of glucose? 5 / 5 pts Question 11 Substrate-level phosphorylation Correctt!! Oxidative phosphorylation Photophosphorylation The reactants are to the left of the arrow: Glucose and 2NAD+ Your Answer: Glucose + 2NAD+ ( before the arrow). 2 NADH Glucose + 2NAD+ + 2 Pyruvate + 2 ATP Identify the reactants of the following chemical equation: 2 / 2 pts Question 12 What are the main two roles of glucose-6-phosphate in the cell? Your Answer: 2 / 2 pts Question 13 Your Answer: The Electron Transport Chain ( ETC) The electron transport chain yields 34 ATP while both glycolysis and fermentation (or respiration) each yield only 2 ATP. Correctt!! False Pyruvate can be converted into either lactic acid or ethanol and then eliminated from the cell. True True or False: During fermentation one means of eliminating pyruvate is by converting it into lactic acid. 2 / 2 pts Question 14 How many ATP does the tricarboxylic acid (TCA) cycle produce per pyruvate? Correctt!! 1 ATP