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Hi, I need help with this biology question
Why can the activity of microorganisms be assessed by breathing rate?
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- what is the mechanism driving the bromothymol blue solution color change? This is a quesiton from my bio lab as how cellular respiration occurs in germinated beans, dry beans, or no beans at all. Anyone know?You have discovered a cyanobacterium with only photosystem I (it has no photosystem II).This bacterium is unable to fix CO2. Explain thoroughly how you think this microorganismmakes ATP and reducing power?A microbe lives solely on acetate. It has an Electron Transport Chain driven by oxygen that has two hydrogen pumps and both NADH and FADH deliver their hydrogens (and electrons) to the first pump hence each generates 2 ATP. How many ATP are generated per acetate molecule?
- Bacterium C had the lab results below. What can you tell me about the carbon food sources it ferments and the kind of end products it produces in anaerobic respiration?Many microorganisms in lakes use cellular respiration to generate energy. Dumping large amounts of raw sewage into rivers or lakes typically leads to massive fish kills, even if thesewage itself is not toxic to fish. What kills the fish? How might you reduce fish mortality after raw sewage is accidentally released into a small pond?Peroxisomes got their name because hydrogen peroxide is: used in their detoxification reactions produced during their oxidation reactions incorporated into their membranes a cofactor for the organelles’ enzymes
- Yeast is a facultative anaerobe. This means that alcohol fermentation takes place only if: the temperature is close to 37°C the atmosphere does not contain oxygen sugar is provided to the cells light is provided to the cellsI need to find two gram positive and two gram negative pathogenic bacteria that may be classified as being facultative anaerobes. What tissues or organs do these bacteria target in the human body? Why is it to their advantage to be able to use either aerobic respiration or anaerobic respiration/fermentation?Some friends are trying to make wine in their basement. They've added yeast (which is a facultative anaerobe - it can perform both aerobic respiration and fermentation) to a sweet grape juice mixture and have allowed the yeast to grow. After several days they find that sugar levels in the grape juice have dropped, but there's no alcohol in the mixture. The most likely explanation is that the mixture needs less oxygen, because yeast only produce alcohol in the absence of oxygen the mixture needs less sugar, because high sugar concentrations prevent fermentation the mixture needs more sugar, because yeast need a lot of energy before they can begin to produce alcohol the yeast used the alcohol as a carbon source the mixture needs more oxygen, because yeast need oxygen to break down sugar and get enough energy to produce alcohol
- Some hyperthermophiles can survive autoclaving temperatures. Are they a concern in health care?You have discovered a cyanobacterium with only photosystem I (it has no photosystem II). This bacterium is unable to fix CO2. How does this microorganism make ATP and reducing power?The enzymes catalase combine two hydrogen peroxide molecules(H20+H2O) to make two molecules of water 2H2O). A gas forms. What is the gas and how do you know this?