Which of the following compounds is the most reactive dienophile? H₂C=CH2 CH3 COOCH3 2 3 CH3 CH3
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- A chemolithotroph would use which of the following as a source of energy? magnetic field glucose light H2Consider the following structure. CO₂CH2CH3 CO₂CH2CH3 This substance could be produced by the reaction of the following diene and dienophile. diene + dienophile H CO,CH,CH3 སངས་ CH3CH₂O₂C True FalseMatch each of the following terms to their proper description. You may have to use your textbook for this question. Obligate aerobe V [ Choose ] require lower than atmospheric amounts of oxygen don't require oxygen, but aren't negatively affected by it a microaerophile that requires a higher amount of CO2 than usual requires oxygen for respiration Obligate anaerobe grow with or without oxygen any amount of oxygen is lethal Facultative anaerobe [ Choose ] Aerotolerant anaerobe [ Choose ] Microaerophile [ Choose ] Capnophile [ Choose ] > > > >
- Which of the following is NOT typical of Halophiles? Choose all that fit the sentence above. Group of answer choices They have peptidoglycan in their cell walls. They have branched lipid membranes They contain colored pigments in their cell membranes They live in high salt conditionsWhich of the following bacteria oxidize nitrite (NO2-) to produce nitrate (NO3-)? Azospirillum Cyanobacter Nocardia Nitrobacter RhizobiumCatalase combines two hydrogen peroxide molecules (H2O2+H2O2) to make two molecules of water. A gas also forms. What is the gas?
- You are studying a bacterium which uses sunlight to produce its own organic compounds from carbon dioxide. Which of the following is the best way to describe the way that the bacterium acquires energy and organic compounds? chemolithotroph chemolithotroph O chemoorganoheterotroph O photoautotroph O photoheterotrophWhat metabolic process creates the rotten-egg smell characteristic of many anaerobic environments?What type(s) of extremophiles are used in oil well drilling operations
- Which of the following is NOT true about chemoheterotrophs? Which of the following is NOT true about chemoheterotrophs? Use organic compounds as a source of both carbon and energy Can use light for energy and CO2 as a source of carbon Oxidize organic compounds (e.g., glucose) to generate ATP They are ultimately dependent on autotrophs to provide their carbon and energy None of the other four answers (all are true of chemoheterotrophs)Bacteria that are obligate intracellular pathogens of humans are considered to be Autotrophs Heterotrophs Photosynthetic Hyperthermophiles Chemolithotrophs Which of the following statements best describes the pathogenesis of Clostridium botulinum? It elaborates an exotoxin that is a lecithinase that causes tissue necrosis. It elaborates a toxin that suppresses the release of inhibitory neurotransmitters. It produces a polysaccharide capsule that inhibits phagocytosis and contributes to invasion of the central nervous system. It elaborates a toxin that inhibits the release of acetylcholine at cholinergic synapses. It produces a leukotoxin that leads to abscess formation.Why do boiled and unboiled potato extracts differ in their action on hydrogen peroxide? Explain in 1-3 sentences
