Why might green sulfur bacteria be able to out-compete purple sulfur bacteria for their common substrate,...
Why might green sulfur bacteria be able to out-compete purple sulfur bacteria for their common substrate, sulfide? Presume light is not limiting for either organism
Homework Answers
Purple sulfur bacteria are aerobic or microaerophilic, that is they can't sustain in high oxygen concentration but they need oxygen for fermentation and respiration. Green sulphur bacteria on the other hand are obligatory anaerobic, so they can't survive in oxygen. So, in depth areas, green sulphur bacteria can grow but in purple sulfur bacteria, the synthesis of photopigments get hampered by low conc. of oxygen, thereby depriving from its main source of energy.
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Why might green sulfur bacteria be able to out-compete purple
sulfur bacteria for their common substrate,...
Plants use two photo-systems (PSII and PSI) to conduct photosynthesis whereas both purple bacteria and green-sulfur...
Plants use two photo-systems (PSII and PSI) to conduct photosynthesis whereas both purple bacteria and green-sulfur bacteria only use one photo-system because Group of answer choices plants need to use photosynthesis to produce both NADPH and ATP whereas the bacteria only need to use photosynthesis to produce ATP plants need to use photosynthesis to produce both NADPH and ATP whereas the bacteria only need to use photosynthesis to produce NADPH Plants use visible light for photosynthesis whereas the bacteria use...
Which statement regarding phototrophs is correct? a. Green sulfur bacteria appear green because their bacteriochlorophylls absorb...
Which statement regarding phototrophs is correct? a. Green sulfur bacteria appear green because their bacteriochlorophylls absorb green light. b. The proton motive force generated during photosynthesis in purple bacteria generates reducing power. c. Electron flow in oxygenic photosynthesis generates both cellular energy and precursor metabolites d. Electron carriers associated with FeS-type photosystems achieve higher reduction potentials than in Q-type photosystems. e. None of the above. Which statement regarding autotrophy is incorrect? a. A single turn of the Calvin Cycle fixes...
Why is methicillin-resistant Staphylococcus aureus (MRSA) methicillin-resistant? Answers are either: -The bacteria are able to prevent...
Why is methicillin-resistant Staphylococcus aureus (MRSA) methicillin-resistant? Answers are either: -The bacteria are able to prevent entry of the drug into the cell. -It produces a modified penicillin binding protein (PBP) target molecule that is not effectively inhibited by the drug. -It has an enzyme that destroys methicillin. -It actively pumps the antibiotic out of the cell.
5. Why are simple stains able to "stick” to bacteria? Explain the chemical properties of the...
5. Why are simple stains able to "stick” to bacteria? Explain the chemical properties of the stain and bacteria surface. 3-Preparation of Bacterial Smears and Simple Stains Introduction Microbial cultures are handled using aseptic technique. Aseptie technique is a set of procedures used to minimize contamination of materials by microorganisms from the environment, and to minimize the spread of cultures around the laboratory. In this experiment, you will be using an inoculating loop to transfer bacteria from a culture tube...
Lab Report-Carbohydrates 1. Purpose 2. Special Media for Isolating Bacteria (Lab #12) a. Why are dyes...
Lab Report-Carbohydrates 1. Purpose 2. Special Media for Isolating Bacteria (Lab #12) a. Why are dyes such as phenol red, eosin or methylene blue added to the media? b. How does the bacterium change the media (i.e color of agar or colonies) after incubation? C. In this experiment, which media are selective, and which are differential? d. How did the results observe on the mannitol salt agar and EMB agar correlate to the Gram reaction of the bacteria? e. What...
1.Pre-Lab Questions What are two ways that some prokaryotes are able to survive in extreme environments?...
1.Pre-Lab Questions What are two ways that some prokaryotes are able to survive in extreme environments? Describe three ways that microorganisms in soil contribute to the ecosystem as a whole. Give two examples of genera that produce endospores, and explain why they are important in human health. What are coliforms? Why are they important in assuring water quality? Why is E. coli the indicator bacterium for fecal contamination? 2.Experiment 1: Bacterial Isolation from Soil Samples Post-Lab Questions Observe the two...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT pink (c) purple (d) green (e) baby-blue 70. All STAINS begin with a properly prepared _?_ . (a) dye (b) slide (c) smear (d) dog (e) cat 71. Which of the following is an ENDOTOXIN found in some microbes? This is results in fever, blood vessel dilation and possibly SHOCK when it is released into the human blood stream? (a) the plasma membrane (b)...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT pink (c) purple (d) green (e) baby-blue 70. All STAINS begin with a properly prepared _?_ . (a) dye (b) slide (c) smear (d) dog (e) cat 71. Which of the following is an ENDOTOXIN found in some microbes? This is results in fever, blood vessel dilation and possibly SHOCK when it is released into the human blood stream? (a) the plasma membrane (b)...
microbiology help TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will...
microbiology help
TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will serve in lieu of a lab report for Exercise 15, 16, and 17 You will find the answer to these questions in the background, procedure, results and interpretation sections of manual Exercise 15, 16, and 17, videos, Actions of Selective and Differential Media Chart, and the Principle/Theory article in homework section.) General Questions 1. What is the purpose (function) of selective media? (How does...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography?...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography? 3. Why is it important to keep the spots on the paper as small as possible? 4. If the solvent pool at the bottom of the beaker touched the spots on the 1.5cm line, what would happen to the spots? How would you address this error? 5. If you were teaching a student how to do paper chromatography, what three pieces of...
5. Why are simple stains able to "stick” to bacteria? Explain the chemical properties of the stain and bacteria surface. 3-Preparation of Bacterial Smears and Simple Stains Introduction Microbial cultures are handled using aseptic technique. Aseptie technique is a set of procedures used to minimize contamination of materials by microorganisms from the environment, and to minimize the spread of cultures around the laboratory. In this experiment, you will be using an inoculating loop to transfer bacteria from a culture tube...
Lab Report-Carbohydrates 1. Purpose 2. Special Media for Isolating Bacteria (Lab #12) a. Why are dyes such as phenol red, eosin or methylene blue added to the media? b. How does the bacterium change the media (i.e color of agar or colonies) after incubation? C. In this experiment, which media are selective, and which are differential? d. How did the results observe on the mannitol salt agar and EMB agar correlate to the Gram reaction of the bacteria? e. What...
microbiology help
TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will serve in lieu of a lab report for Exercise 15, 16, and 17 You will find the answer to these questions in the background, procedure, results and interpretation sections of manual Exercise 15, 16, and 17, videos, Actions of Selective and Differential Media Chart, and the Principle/Theory article in homework section.) General Questions 1. What is the purpose (function) of selective media? (How does...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography? 3. Why is it important to keep the spots on the paper as small as possible? 4. If the solvent pool at the bottom of the beaker touched the spots on the 1.5cm line, what would happen to the spots? How would you address this error? 5. If you were teaching a student how to do paper chromatography, what three pieces of...
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