Biod 171 Essential Microbiology Portage Learning Module 2 Exam Questions And Answers

Chemotrophs utilize which form of phosphorylation? {Ans: Chemotrophs use oxidative phosphorylation (may also accept substrate level phosphorylation). Oxidative phosphorylation utilizes the energy released by the chemical oxidation of nutrients to reform ATP.}What are the byproducts of light reactions used for in dark reactions? {Ans: The ATP and NADPH produced via light reactions are used in dark reactions to convert carbon dioxide and water into organic carbon compounds as well as useful carbohydrates (a process called carbon fixation).}Identify the enzyme associated with the following enzymatic reactions: A-B →B-A ______________ Ab + C → A + Cb ______________ {Ans: A-B → B-A (Isomerases) Ab + C → A + Cb (Transferases)}Chemotrophs can be subdivided into what two additional subgroups? {Ans: Chemotrophs, which acquire energy from preformed chemicals found in the environment, can be divided into either organotrophs (removing electrons from organic molecules such as glucose) or lithotrophs, which remove electrons from inorganic molecules.}How are the TCA and ETC related? {Ans: The end products of the Kreb's (TCA or citric acid) cycle are used to fuel the electron transport chain. In other words, as the Kreb's cycle (TCA) produces an abundance of reduced electron carriers (NADH and FADH2),