The main reason why ruminants like cows can metabolize grass is the presence of bacteria that produce which enzyme in their gut? Oglucosidase O lactase cellulase amylase
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![The main reason why ruminants like cows can metabolize grass is the
presence of bacteria that produce which enzyme in their gut?
O glucosidase
lactase
O cellulase
amylase](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9ed9887f-fede-4ee4-a900-75dc8725af9e%2F96d98a0d-2641-4976-9b8f-0a270b75e8ac%2Fvs12olr_processed.jpeg&w=3840&q=75)
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- Which of the following are secondary metabolites: pyruvate, a secreted amylase, an antibiotic, leucine? What kind of system (fermenter vs. chemostat) would most likely be used for the production of the streptomycete antibiotic streptomycin? Explain your answer.1). SIM Tubes and TSI slants turn black if the organism is able to reduce iron compounds. For which organism(s) below would you expect a black reaction? Circle all that apply. Escherichia coli. Proteus vulgaris. Salmonella typhimurium. Alcaligenes faecalis. Shigella flexneri. 2). If Citrate is a sugar and fermentation generates an acid, why does the BromThymol Blue indicator in the media turn blue and not yellow? 3). Why is Salmonellosis associated with eggs? Can you get Salmonellosis from other animal sources?Which is produces by fungus to digest cellulose in the environment;endoenzymeexoenzymecatalasepolymeraseconstitutive enzyme
- Which of the following is not correct about nitrogen fixation? Carried out only by few prokaryotic organisms termed diazotrophs It requires metabolic energy None of the above Enzyme that catalyzes the reduction of nitrogen is termed as nitrogenase complexWith regards to the benefits of lactic acid fermentation and/or lactic acid bacteria, which statement below is false? O helps preserve foods in the absence of refrigeration O lactic acid fermentation by human cells can make ATP under anaerobic conditions O Will increase the sugar contents of foods which will inhibit the growth of spoilage microbes Dlactic acid bacteria on mucous membranes will help inhibit growth of opportunistic pathogens such as_ CandidaIf you are working at a sewage treatment plant, which microbial process would you use to reduce nitrates in sewage before releasing into rivers? Why? O nitirification to convert nitrates to unusable nitrites; to increase algal growth in water O denitrification; to reduce HAB's O nitroge fixiation; to increase dissolved oxygen in river water nitrification; to make water richer in fertilizers when used by farmers
- ns, exoenzymes O e. Opportunistic, enterotoxins Secreting the macromolecules by fusion of the vesicle with the plasma membrane is a process called Answer: of ype here to search hp f5 4米Enterobacteriaceae species might be differentiated (from one another) by all of the following except: o amino acid fermerntation o lactose fermentation O oxidase test o Eosin Methylene Blue agar o MacConkey agarWhich of the follwoing antibiotics inhibit the synthesis of oligosaccharides? O Cephalosporins Tunicamycin Gram positive bacteria : Thick peptidoglycans O Penicillins O Ofloxacin
- Botulism What is most likely to be found in under cooked meat, such as hamburger? OE. Coli. O E. E. Cummings. O Salmonella O Botulism What is the bacteria that produces toxins sometimes found in caned foods?Which of the following bacteria oxidize nitrite (NO2-) to produce nitrate (NO3-)? Azospirillum Cyanobacter Nocardia Nitrobacter RhizobiumBacteria 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.