Portage Learning BIOD 171/Microbiology Module 2 Exam Questions and Answer Key

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Question 1 2 / 2 pts True or False: As movement requires energy, metabolism can be defined as a controlled set of biochemical reactions that occur in only motile organisms in order to maintain lif... e. False Metabolism occurs in all living organisms, not just those that move. Question 2 2 / 2 pts True or False: Enzymes slow down chemical reactions to conserve energy.Correct! False Enzyme catalyze (speed up) chemical reactions. Question 3 5 / 5 pts What is the term for metal ions that assist enzymes during the catalysis reaction? Your Answer: cofactors Cofactors are usually metal ions and assist enzymes during the catalysis reaction. Question 4 5 / 5 pts Define anabolism. Your Answer: Building up smaller chemical building blocks. Anabolism is the process of building up or biosynthesis of macromolecules from small molecular units into much larger complexes. Question 5 0 / 5 pts In order to convert proteins into amino acids which metabolic process would be active? Your Answer: glycolysis 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: ATP has the energy to donate to ADP while ADP is able to recieve energy from ATP. Therefore ATP-Pi--> ADP, ADP+Pi--> 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 dephosphorylated (ATP ⟶ ADP + Pi), while ADP can be phosphorylated into ATP (ADP + Pi ⟶ ATP). Question 7 2 / 2 pts An organism that derives its energy (generates ATP) from photons of light is called a _________? Your Answer: Phototrophs Phototrophic microorganism Question 8 0 / 2 pts An organism that obtains its source of carbon from inorganic molecules such as carbon dioxide is referred to as a ____________? Your Answer: chemotrophs Autotroph Question 9 2 / 2 pts This phosphorylation process occurs in the mitochondria of chemotropic eukaryotes. Photophosphorylation Correct! Oxidative phosphorylation Substrate-level phosphorylation Question 10 5 / 5 pts The catabolism of a single molecule of glucose goes through what 3 distinct transitions? Your Answer: 1) glycolysis 2) fermintation or respiration 3) ETC The breakdown of glucose goes through (1) Glycolysis then (2) Fermentation or Respiration and finally through (3) the electron transport chain (ETC). Question 11 5 / 5 pts What is the most energetic transition in the catabolism of glucose? Your Answer: electron transport chain, it yields 34 ATP The electron t [Show More]

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