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A cyanobacterium absorbs 2856 photons. How many molecules of ATP are produced
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- A chemolithotroph would use which of the following as a source of energy? magnetic field glucose light H2The non-protein component of the transmembrane complex used by the salt-loving archaeobacterium Halobacterium halobium, which uses sunlight to create a proton gradient for ATP synthesis, is called: bacteriochlorophyll chlorophyll bacteriorhodopsin retinal cytochrome cWhy might clinical medicine have an interest in understanding bacterial cell division at the molecular level? Explain why a hyperthermophile would probably not be a human pathogen. Describe four factors that may have an influence on the effectiveness of an antimicrobial treatment. Explain why 70% or 80% alcohol is more effective than 100% alcohol in controlling microorganisms.
- Classify the following attributes as belonging to either purple photosynthetic bacteria or heliobacteria. Purple Photosynthetic Bacteria Heliobacteria Bacteriochlorophyll g Heterotrophic Cannot form endospores Reduced sulfur is electron donor for NAD* reduction Gram-positive Gram-negative Autotrophic Some form endospores Organic carbon electron donor for NAD* reduction Bacteriochlorophyll a or b Possess intracellular cytoplasmic Possess only plasma membrane membranesThe protein component of the transmembrane complex used by the salt-loving archaeobacterium Halobacterium halobium, which uses sunlight to create a proton gradient for ATP synthesis, is called: bacteriochlorophyll chlorophyll bacteriorhodopsin retinal cytochrome cThe figure shows stratification of microbial layers in a Winogradsky column (a method used to simulate environments similar to microbial mats observed in nature). Cyanobacteria and algae Nonsulfur photosynthetic bacteria (e.g., Rhodomicrobium) Purple photosynthetic bacteria (e.g., Chromatium) Green photosynthetic bacteria (e.g., Chlorobium) Air Liquid Aerobic zone Microaerophilic zone (Less anaerobic) Anaerobic zone (More anaerobic) Mud mixed with sulfate and carbonate salts and cellulose or other organics
- Your lab is determining the oxygen growth requirements of several different bacteria. For this experiment you'll need 40 tubes of thioglycolate broth. The formula on the bottle says to mix 23.8 g of powdered broth with 1 liter of deionized water. Assuming 7 mL of broth per tube. How many grams of powdered broth will be required for this experiment? (Show your answer to 3 decimal places)Yeast cells are added to a 3.0 L batch bioreactor so that the initial cell concentration is [X]. = 1.3 g cells / L. The growth mediğim in the reactor, which is well-mixed so the cells have access to all nutrients, contains 150 g CELL DATA ribose (C5H10O5, MW 150), 75 g ammonia (NH3, MW 17), and 85 g oxygen (O2, MW 32). A-10. Determine the maximum concentration of cells, [X], that will form in the bioreactor when the limiting nutrient is consumed. Search Yx/ribose YX/02 YX/NH3 Specific growth rate on limiting nutrient, u Lag phase duration Deceleration phase duration 0.48 g/g 0.87 g/g 0.23 g/g 0.51 h 30 minutes NegligibleA chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does not consume organic molecules. How does this organism make ATP?
- In the diagram below, identify the structures of a cyanobacterial cell based on the following descriptions: a) Outer cellular covering which includes: Mucilaginous layer – outermost layer covering the cell wall; protects the cell from harmful factors of the environment Cell wall – found just below the mucilaginous layer; 2 or 3-layered, the inner layer lies in between the outer wall layer and plasma membrane; the outer layer is made of peptidoglycan Innermost plasma membrane – selectively permeable membrane enclosing the cytoplasm b) Cytoplasm – found below the plasma membrane; the protoplasm which contains structures of different shapes and functions. Lamellae, which contain pigments such as chlorophylls, carotenes, xanthophylls, phycoerythrin and phycocyanin, are located in the peripheral region of cytoplasm. Ribosomes may also be found scattered in the cytoplasm. c) Nucleic material – the nucleoplasm that is centrally located in the cell and contains chromatin in the form…Clostridium perfringens bacteria, which can survive and grow on frostbitten human tissues, but only in the complete absence of oxygen gas, are properly categorized as: anaerobic autotrophs facultative autotrophs anaerobic heterotrophs aerobic heterotrophs aerobic autotrophsyou grew streak plates of Clostridium sporogenes under both aerobic and anaerobic conditions. Which plates showed bacterial growth, and what does the zone around the metronidazole disc represent? Additionally, explain what types of bacterial growth metronidazole affects and why.