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Ch. 8 - Microbial Metabolism
Norman-McKay- Microbiology: Basic and Clinical Principles 2nd Edition
Norman-McKay2nd EditionMicrobiology: Basic and Clinical PrinciplesISBN: 9780137661619Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoNorman-McKay 2nd EditionCh. 8 - Microbial MetabolismProblema 11
Capitolo 4, Problema 11

_______________________ is a process that uses energy from nutrients to fuel an electron transport chain to make ATP.

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Identify the key components of the process described: it uses energy from nutrients, involves an electron transport chain, and results in the production of ATP.
Recall that the process which uses energy derived from nutrients to drive an electron transport chain for ATP synthesis is a fundamental metabolic pathway in cells.
Understand that this process involves transferring electrons through a series of membrane-bound proteins, creating a proton gradient that powers ATP synthase to generate ATP.
Recognize that this process is commonly known as 'cellular respiration' or more specifically 'oxidative phosphorylation' when referring to the electron transport chain and ATP synthesis step.
Conclude that the blank should be filled with the term describing this energy-conserving process, which is 'cellular respiration' or 'oxidative phosphorylation'.

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Cellular Respiration

Cellular respiration is the metabolic process by which cells convert nutrients, especially glucose, into usable energy in the form of ATP. It involves glycolysis, the Krebs cycle, and an electron transport chain, where energy from electrons is harnessed to produce ATP.
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03:38
Introduction to Aerobic Cellular Respiration

Electron Transport Chain (ETC)

The electron transport chain is a series of protein complexes located in the cell membrane (or mitochondrial membrane in eukaryotes) that transfer electrons from electron donors to acceptors. This transfer releases energy used to pump protons and create a gradient that drives ATP synthesis.
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07:41
Electron Transport Chain

ATP Synthesis

ATP synthesis is the process of producing adenosine triphosphate (ATP), the cell’s main energy currency. In the electron transport chain, the proton gradient generated powers ATP synthase, an enzyme that synthesizes ATP from ADP and inorganic phosphate, providing energy for cellular activities.
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06:44
ATP
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Domanda del libro di testo

Why do human cells require oxygen? Select all relevant statements.

a. To carry out glycolysis

b. To carry out fermentation

c. To carry out cellular respiration

d. To oxidize fats

e. To carry out substrate-level phosphorylation

f. To carry out oxidative phosphorylation

g. To carry out photophosphorylation

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Domanda del libro di testo

The photo shows an organism growing in glucose fermentation broth. What can you conclude about this specimen with regard to its ability (or lack thereof) to ferment the sugar sucrose? Explain your answer.

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Domanda del libro di testo

_______________________ is a process that uses light energy to drive an electron transport chain to make ATP.

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The _______________________ test detects if an organism can convert hydrogen peroxide to water and oxygen. The test result is usually _______________________ in anaerobic microbes and usually _______________________ in aerobic microbes. You know the test is positive by _______________________.

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Domanda del libro di testo

_______________________ is a process that relies on a phosphorylated intermediate to directly convert ADP to ATP.

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Domanda del libro di testo

Use this pathway schematic to answer questions a through d.

a. Which enzyme carries out a redox reaction? In this reaction, what is being reduced and what is being oxidized?

b. Which enzyme would be the most likely to be regulated by feedback inhibition?

c. What is the end product of this pathway?

d. Which enzyme carries out substrate-level phosphorylation?

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