BIOD 171 Module 2 Exam(3 Versions)(New, 2023-2024)/BIOD171 Module 2 Exam:Portage Learning, Exams of Nursing

Download BIOD 171 Module 2 Exam(3 Versions)(New, 2023-2024)/BIOD171 Module 2 Exam:Portage Learning and more Exams Nursing in PDF only on Docsity! 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 life. 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 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 transport chain yields 34 ATP while both glycolysis and fermentation (or respiration) each yield only 2 ATP. Question 12 2 / 2 pts Identify the products of the following chemical equation: Glucose + 2NAD+ → 2 NADH + 2 Pyruvate + 2 ATP Your Answer: The products are to the right of the arrow, 2 NADH, 2 Pyruvate, and 2 ATP The products are to the right of the arrow: 2NADH, 2 Pyruvates and 2 ATP Question 13 2 / 2 pts The presence of what molecule ‘signals’ to the cell that glycolysis is about to start? Your Answer: G6P Glucose-6-phosphate (G6P) Question 14 Lactose Correct! Lipids Question 18 2 / 2 pts For the catabolism of proteins and lipids, which of the following enzymes are used? Select all that apply. Transferases Correct! Lipases Correct! Proteases Ligases Proteases breakdown proteins while lipases breakdown lipids. Question 19 2 / 2 pts True or False. The β-oxidation pathway is responsible for the anabolism of fatty acid chains. True Correct! False The β-oxidation pathway is responsible for the catabolism of fatty acid chains. Question 20 5 / 5 pts Describe the relationship between chloroplasts and chlorophyll. Your Answer: They are both associated with photosynthesis. Chloroplasts have double membrane enclosed organelles that contain the pigment of chlorophyll. Both chloroplasts and chlorophyll are associated with photosynthesis. Chloroplasts are the double membrane-enclosed organelles that contain the photosynthetic pigment chlorophyll. Question 21 2 / 2 pts True or False: Chloroplasts are specific to algae and plants. Correct! True False Question 22 1.5 / 2 pts The process of carbon fixation begins with which of the following reactants: select all that apply. Correct! CO2 Your Answer: 6 six Question 26 10 / 10 pts Complete the following equation by placing the appropriate numbers where indicated. [answer1]CO2 + [answer2]ATP + [answer3]NADPH + [answer4] H20 → C6H12O6 + [answer5]ADP + [answer6] NADP+ Your Answer: 1) 6 2) 18 3) 12 4)12 5) 18 6)12 1. 6 2. 18 3. 12 4. 12 5. 18 6. 12 Question 27 10 / 10 pts Match the following reactions to its corresponding enzyme: 1.A−B+H2O→A−OH+B−H 2.A−B→B−A 3.A+B→A−B 4.A−B→A+B A- Lyases B- Transferases C- Oxidoreductases D- Hydrolases E- Ligases F- Isomerases What is a cofactor? And give a general example. Your Answer: A cofactor are small chemical compenents that assist enzymes. Cofactors regulate chemcial reactions and are usually metal ions. A cofactor is a small chemical component that assists an enzyme during the catalysis reactions. A cofactor is usually metal ions. Question 4 5 / 5 pts Define anabolism. Your Answer: Anabolism is the process of building up of macromolecules from small to larger complexes. Anabolism is the process of building up or biosynthesis of macromolecules from small molecular units into much larger complexes. 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. Catabolism is the process of breaking down larger molecules into useful energy sources. In other words, proteins would be broken down into 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: ATP has an energy group (a phosphate) that it can donate. ADP can accept energy in the form of a phosphate group. (ATP ADP + Pi) and (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 reduced (ATP ⟶⟶ADP + Pi) while ADP can be built 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: phototrophic microorganism Phototrophic microorganism Question 8 2 / 2 pts An organism that obtains its source of carbon from inorganic molecules such as carbon dioxide is referred to as a ____________? Your Answer: litotroph Autotroph Question 9 0 / 2 pts This phosphorylation process occurs in the mitochondria of chemotropic eukaryotes. Correct Answer Oxidative phosphorylation Substrate-level phosphorylation You Answered Photophosphorylation Question 10 5 / 5 pts The catabolism of a single molecule of glucose goes through what 3 distinct transitions? Your Answer: 1. glycoloysis 2. fermentation 3. Electron transport chain (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: both glycoloysis and fermentation yield: 2 ATP Electron transport chain yields: 34 ATP The electron transport chain yields 34 ATP while both glycolysis and fermentation (or respiration) each yield only 2 ATP. Question 12 2 / 2 pts Identify the products of the following chemical equation: Glucose + 2NAD+ →→ 2 NADH + 2 Pyruvate + 2 ATP Your Answer: The products are everything that is to the right of the arrow: 2 NADH + 2 pyruvate + 2 ATP The products are to the right of the arrow: 2NADH, 2 Pyruvates and 2 ATP Question 13 2 / 2 pts What are the main two roles of glucose-6-phosphate in the cell? Your Answer: Question 18 2 / 2 pts For the catabolism of proteins and lipids, which of the following enzymes are used? Select all that apply. Correct! Proteases Transferases Ligases Correct! Lipases Proteases breakdown proteins while lipases breakdown lipids. Question 19 2 / 2 pts True or False. The β-oxidation pathway catabolizes the fatty acid chains of lipids. Correct! True False Question 20 5 / 5 pts Describe the relationship between chloroplasts and chlorophyll. Your Answer: Both chloroplasts and chlorophyll are used in the process of photosynthesis. Chloroplasts are double-membrane enclosed organelles are contain the pigment chlorophyll. Both chloroplasts and chlorophyll are associated with photosynthesis. Chloroplasts are the double membrane-enclosed organelles that contain the photosynthetic pigment chlorophyll. Question 21 2 / 2 pts True or False. Plants, algae and bacteria all contain chloroplasts. True Correct! False Chloroplasts are specific to algae and plants only. Question 22 2 / 2 pts The process of carbon fixation begins with which of the following reactants: select all that apply. Correct! H2O Glyceraldehyde-3-phosphate Correct! NADPH Correct! ATP Correct! CO2 Carbon fixation uses the ATP/NADPH produced during light reactions to convert CO2 and H2O into useful sources of energy (carbohydrates). Question 23 5 / 5 pts What is one of the main functions of light reactions? Your Answer: One of the main functions of the light reactions are to generate a proton concentration graident to generate ATP. Similar to the electron transport chain, one of its main functions is to generate a proton concentration gradient to generate ATP. Question 24 2 / 2 pts True or False: Dark reactions can occur in the presence or absence of light. Correct! True The term ‘dark reactions’ (also known as the Calvin Cycle) simply denotes the second stage in photosynthesis—dark reactions do not actually require darkness in order to occur. False Question 25 2 / 3 pts How many turns (or repititions) of the Calvin Cycle are required to generate one molecule of glucose? Your Answer: 6 turns M2: Module 2 Exam - Requires Respondus LockDown Browser + Webcam Results for Priscille Lokossou Score for this quiz: 96 out of 100 Submitted Nov 27 at 2pm This attempt took 32 minutes. 2 / 2 ptsQuestion 1 True or False: Metabolism is a controlled set of biochemical reactions that occur in living organisms in order to maintain life. True Correct! False 2 / 2 ptsQuestion 2 True or False: Enzymes are polysaccharides that catalyze chemical reactions. True False Correct! Enzymes are proteins that catalyze chemical reactions. 5 / 5 ptsQuestion 3 Your Answer: What is a cofactor? And give a general example. A cofactor is a small chemical component that assist enzymes during catalysis reaction. A general example of a cofactor is metal ions. A cofactor is a small chemical component that assists an enzyme during the catalysis reactions. A cofactor is usually metal ions. 5 / 5 ptsQuestion 4 Your Answer: Define anabolism. Anabolism is the process of building up smaller molecules units into larger complexes. Anabolism is the process of building up or biosynthesis of macromolecules from small molecular units into much larger complexes. 5 / 5 ptsQuestion 5 Your Answer: In order to convert proteins into amino acids which metabolic process would be active? 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. 10 / 10 ptsQuestion 6 Your Answer: Describe the energy transfer process relative to both ATP and ADP. 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). 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. 2 / 2 ptsQuestion 12 Your Answer: Identify the reactants of the following chemical equation: Glucose + 2NAD 2 NADH + 2 Pyruvate + 2 ATP+ Glucose + 2NAD+ ( before the arrow). The reactants are to the left of the arrow: Glucose and 2NAD+ 2 / 2 ptsQuestion 13 Your Answer: What are the main two roles of glucose-6-phosphate in the cell? The main two roles of glucose-6-phosphate in the cell is to signal the start of the glycolysis process and prevent glusose from distullating from the cell. Glucose-6-phosphate, also known as G6P (1) prevents glucose from diffusing out of the cell as well as (2) serves as the signal molecule to the cell that glycolysis is about to begin. 2 / 2 ptsQuestion 14 True or False: During fermentation one means of eliminating pyruvate is by converting it into lactic acid. True Correct! Pyruvate can be converted into either lactic acid or ethanol and then eliminated from the cell. False 2 / 2 ptsQuestion 15 How many ATP does the tricarboxylic acid (TCA) cycle produce per pyruvate? 1 ATP Correct! The TCA cycle produces only 1 ATP per pyruvate. 2 ATP 34 ATP 4 ATP 2 / 2 ptsQuestion 16 True or False. The products of the TCA cycle enter and fuel the electron transport system. True Correct! The high volume production of reduced electron carriers from the TCA cycle is used by the ETC to drive ATP production. False 2 / 2 ptsQuestion 17 In the absence of glucose, which of the following cannot be used as alternative energy sources? Select all that apply. Carbohydrates Nucleic acids Correct! 0 / 2 ptsQuestion 22 The process of photophosphorylation produces which of the following: select all that apply. NADPH Correct! ATP Correct! H2O You Answered CO2 You Answered Glyceraldehyde-3-phosphate 5 / 5 ptsQuestion 23 Your Answer: In phosphorylation, the light reactions always occur where? In phosphorylation, light reactions occurs in the cell membrane always. The process of converting light energy into chemical energy (photophosphorylation) always occurs in the membrane. 2 / 2 ptsQuestion 24 True or False: The Calvin cycle must occur in the absence of light. True False Correct! The term ‘dark reactions’ (also known as the Calvin Cycle) simply denotes the second stage in photosynthesis—dark reactions do not actually require darkness in order to occur. 3 / 3 ptsQuestion 25 Your Answer: How many turns (or repititions) of the Calvin Cycle are required to generate one molecule of glucose? 6 six 10 / 10 ptsQuestion 26 Your Answer: Complete the following equation by placing the appropriate numbers where indicated. [answer1]CO + [answer2]ATP + [answer3]NADPH + [answer4] H 0 → C H O + [answer5]ADP + [answer6] NADP 2 2 6 12 6 + 1. 6 2. 18 3. 12 4. 12 5. 18 6. 12 1. 6 2. 18 3. 12 4. 12 5. 18 6. 12 10 / 10 ptsQuestion 27