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CHEM 210 Module 8 Exam: ETC, Oxidative Phosphorylation & Urea Cycle Q&A | Portage Learning, Exams of Nursing

Chamberlain College of NursingNursing

Master CHEM 210 Module 8 with this essential study guide. Features practice questions and verified answers on the Electron Transport Chain (ETC), chemiosmotic theory, ATP synthase, oxidative phosphorylation, and the urea cycle. Perfect for Portage Learning biochemistry students to effectively prepare for the final exam and understand core energy and nitrogen metabolism concepts. CHEM 210, Portage Learning, Biochemistry, Module 8 exam, Electron Transport Chain, Oxidative phosphorylation, ATP synthase, Urea cycle, Chemiosmotic theory, MERRF, Nursing prerequisites, Science study guide

Typology: Exams

2025/2026

Available from 10/17/2025

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CHEM 210 Module 8 Exam Newest
1. What is the "unifying" theory covered in this module?: Chemiosmotic theory
2. How many ATP are produced per NADH molecule? Per FADH2 molecule?: -
NADH produced 2.5 ATP, while produces FADH21.5 ATP.
3. What happens to the carbon skeleton of an amino acid after it is separated
from NH4+?: The carbon skeleton becomes acetyl-CoA, then ATP.
4. Why is urea such a good molecule for excreting nitrogen from cells?: It has a
high density of nitrogen in a small molecule, and it can form numerous hydrogen
bonds with water.
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Download CHEM 210 Module 8 Exam: ETC, Oxidative Phosphorylation & Urea Cycle Q&A | Portage Learning and more Exams Nursing in PDF only on Docsity!

CHEM 210 Module 8 Exam Newest

  1. What is the "unifying" theory covered in this module?: Chemiosmotic theory 2. How many ATP are produced per NADH molecule? Per FADH2 molecule?: - NADH produced 2.5 ATP, while produces FADH21.5 ATP.
  2. What happens to the carbon skeleton of an amino acid after it is separated from NH4+?: The carbon skeleton becomes acetyl-CoA, then ATP.
  3. Why is urea such a good molecule for excreting nitrogen from cells?: It hasa high density of nitrogen in a small molecule, and it can form numerous hydrogen bonds with water.
  1. What is an integral protein?: A protein firmly embedded in the lipid bilayer
  2. How many complexes are in the ETC?: Four complexes named complex I, II,III, and IV
  3. At which ETC complex is H2O produced? How is it produced?: At complexIV by the following reaction: O2 + 4e- + 4H+ ’ 2H2O
  4. What complex oxidizes NADH? How about FADH2?: Complex I for NADH.Complex II for FADH2.
  5. At which complex is water produced from oxygen?: Complex IV
  6. How is the H+ gradient formed?: Complexes I, III, and IV pump these ions from the matrix to the intermembrane space.
  1. MERF Disease: -mutation found in mitochondria in tRNA -not as much ATP going on -muscle weakness, muscle twitches and degeneration -muscle cells and nerve cells
  2. movement of higher concentration move to lower concentration: osmosis
  3. gradients of charge and chemical species drive ATP formation: chemios- motic theory
  4. what drives ATP production: the H+ flowing from Im space to matrix, rotationof ATP synthase by H+
  5. what happens if F0 inhibited: ATP production halts bc if protons cant gget through aexl then F0 wonts move
  1. 3 primary phases of oxidative phosphorylation: phase I -NADH and FADH transfer e- and protons to the complexes phase II- as electrons move through protons being pumped from matrix into mito-chondrial space phase III- as prtons being pumped through IM they flow back into matrix to drive ATPsynthase
  2. complex I: NADH Dehydrogenase
  3. complex II: succinate dehydrogenase
  4. where does ETC occur: matrix
  5. when are NADH and FADH2 ready to ender ETC: when produced by citric acid cycle

-arinonosuccinic aciduria -arginaermia

  1. where does urea cycle occur: occurs in liver and kidneys
  2. what happens if nitrogen builds up in cells: it is very toxic and can lead to coma or death
  3. carbon portion of amino acids referred to as: carbon skeleton
  4. oxidative deamination: removes nitrogen in form of ammonium 39. four step cyclic process that converts NH4+ to urea which is then excreted from the body:
  5. NH4+ is produced by: oxidative deamination
  6. what enters the urea cycle in step 1: carbamoyl phosphate
  1. exported to cytosol where it can react with aspartate and ATP to form arginosuccinate: citruline
  2. what is arginosuccinate degraded by: arginosuccinase to form fumarate and arginine
  3. arginine is cleaved to form: urea and ornithine
  4. why does urea make an excellent molecule to export nitrogen from the cell: has high water solubility due to its hydrogen bonding ability and it has a high density of nitrogen atoms in a small molecule
  5. True or False: The majority of reactions of the urea cycle occur in the cytosol.: true
  6. True or False: FADH2 yields 2.5 ATP molecules after donating electrons and hydrogen atoms to the electron transfer chain (ETC).: false
  7. True or False: ATP is invested in the urea cycle.: true
  8. True or False: There are six complexes associated with the ETC.: F
  9. True or False: In the production of ATP via ATP synthase, the H+ ions move from the mitochondrial matrix to the intermembrane space.: F
  1. In what portion of the mitochondrion is the ETC located?: Inner membrane 62. At which complex does the following reaction take place?

NADH + H+ + CoQ ’ NAD+ + CoQH2: Complex I

  1. During the electron transport chain, protons are pumped from in the mitochondria.: From the matrix to the intermembrane space

64. Energy released is utilized for the synthesis of ATP.: - As protons flow through ATP synthase and back into the mitochondrial matrix 65. The H+ ions flow through what part of the ATP synthase? A. FO B. F C. F D. Stator E. Both A and C: A 66. An individual with the MERRF disease, tend to have symptoms of .: muscle twitches

  1. ATP synthase is located in the of mitochondria.: inner mem- brane
  2. causes ATP to be produced.: rotation of ATP synthase 69. According to the chemiosmotic theory, how is the ETC connected to ATP production? Explain in at least four complete sentences.: The chemical reactions of the ETC

coenzymes. The matrix is the innermost space of mitochondrion, where the citric acid cycle occurs along portions of fatty acid oxidation and the urea cycle. Once the NADH and FADH2 are produced by the citric acid cycle, they are in proximity to the electron transport chain, so that donation of electrons and hydrogen ions is efficient.