Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 5, Problem 9RQ
Summary Introduction
To review:
The organisms that live in aerobic and anaerobic environmental conditions.
Introduction:
Growth of various forms is affected by several environment conditions. The organisms adapt according to the environmental conditions in their habitats. The microorganisms are the microscopic in size that cannot be visible by a naked eye. The environmental conditions that affect the growth are temperature, pressure, oxygen, salts, and the pH (potential of hydrogen) of the solution.
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We know that atmospheric oxygen (O2) can be a final electron acceptor at the end of the electron transport chain in aerobic respiration.
Name 2 other inorganic molecules that can be final electron acceptors at the end of the electron transport chain in anaerobic respiration.
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What does the following figure represent?
The last steps of anaerobic cellular respiration.
b)
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The electron transport chain (ETC) only.
d)
Chemiosmosis only.
e)
The light reactions of photosynthesis.
Chapter 5 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 5.2 - Prob. 1TQCh. 5.2 - Prob. 2TQCh. 5.2 - Prob. 3TQCh. 5.3 - Prob. 1TQCh. 5.4 - Prob. 1TQCh. 5.5 - Prob. 1TQCh. 5.5 - Prob. 2TQCh. 5.5 - Prob. 3TQCh. 5.6 - Prob. 1TQCh. 5.7 - Prob. 1TQ
Ch. 5.7 - Prob. 2TQCh. 5.7 - Prob. 3TQCh. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Prob. 4RQCh. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQCh. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 1TQCh. 5 - Prob. 2TQCh. 5 - Prob. 3TQCh. 5 - Prob. 4TQCh. 5 - Prob. 5TQ
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- What is the final electron acceptor for aerobic organisms? What does this mean?arrow_forwardEscherichia coli is a facultative anaerobe that ferments sugars. In the absence of oxygen, it does not use its electron transport chain but can still use an F1F0-ATPase. In the presence of oxygen, it respires oxygen through the electron transport chain. In the presence of oxygen, how does E.coli obtain its three energy intermediates?arrow_forwardThe function of NAD+ and FADH+ is: A)To make sugar from carbon Dioxide B)To pump hydrogen ions across a membrane C)To capture and hold high energy electrons D)To turn the rotor of ATP Synthase E)To take low energy electrons from the electron transport chainarrow_forward
- Refer to the figure. To identify the molecule that accepts CO2, Calvin and Benson manipulated the carbon fixation cycle by either cutting off CO2 or cutting off light from cultures of photosynthetic algae. They then measured the concentrations of various metabolites immediately following the manipulation. How would these experiments help identify the CO2 acceptor? a) The CO2 acceptor concentration would decrease when either the CO2 or light is cut off. b)The CO2 acceptor concentration would decrease when the CO2 is cut off but increase when the light is cut off. c)The CO2 acceptor concentration would stay the same regardless of the CO2 or light. d)The CO2 acceptor concentration would increase when either the CO2 or light is cut off. e)The CO2 acceptor concentration would increase when the CO2 is cut off but decrease when the light is cut off.arrow_forwardWhy is oxygen required for ATP generation by the electron transport chain and oxidative phosphorylation? a) Oxygen is needed for glycolysis b) Oxygen is the electron donor for the electron transport chain producing CO2 c) Oxygen helps proteins fold better d) Oxygen is needed to made water and produce protons for the electron transport chain e) Oxygen is the ultimate electron acceptorarrow_forward5. a) The cell creates molecules of NADH and FADH2to use in the electron transport chain as they are electron carrier molecules. The electron transfers from these moleculesdrives the movement of what molecule across the mitochondrial membrane?b) What is chemiosmosis?c) How does the cell use chemiosmosis to drive overcome the thermodynamic barrier of bringing phosphates close togehter to create ATP?d) What steps of oxidative phosphorylation are in the cytosol and which are in the mitochondria?e) Cellular respiration can be controlled at the post-translational level. What does this mean, using GLUT as an example? Why is post-translational control of GLUT evolutionarilyadaptive over transcriptional control?f) How does establishment of equillibria of various molecules control metabolic reactions? What are three ways high ATP in the cell control cellular respiration?g) Why are the enzymes controlling the initial steps of various biochemical pathways are targeted by allosteric control?arrow_forward
- What is the terminal electron acceptor in aerobic organisms? O2 It depends on the organism. CO2 NAD+ FADarrow_forwardThe turbine engine of ATP synthase spins as a result of: A) water B) hydrogen ions moving down thier gradient C) sunlight D) oxidation of electron carriers E) oyxgenarrow_forward4) Which is one major difference between anaerobic and aerobic respiration? A) Electron donor B) Electron acceptor C) Use of electron transport D) Use of proton motive forcearrow_forward
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