Microbial denitirification involves_ O fermentation using nitrates as alternate terminal electron acceptors O anaerobic respiration using nitrates as terminal alternate electron acceptors- O aerobic respiration using nitrates as terminal alternate electron acceptors

For E. coli, what is the source of energy, carbon, electrons, and identify the likely terminal electron acceptors.

6:51 Done Edit This microbe does not have a fermentation pathway sufficient for growth when oxygen is not present O Obligate anaerobe O Aerotolerant py O Obligate aerobe ear O Microaerophile More

1. Lactococcus lactis uses fermentation as its only method of ATP production, and has SOD and catalase. How would the growth of L. lactis in oxic conditions compare to its growth in anoxic conditions? 2. Legionella pneumophila uses aerobic respiration as its only method of ATP production. How would the growth of L. pneumophila in oxic conditions compare to its growth in anoxic conditions?

What two possible compounds might nitrate be reduced to when nitrate is used as the final electron receptor?

Trace the fate of the N atom during dissimilatory nitrate reduction, nitrification, denitrification, and the anammox reaction, and indicate whether each must occur in an oxic or anoxic environment

Pseudomonas aeruginosa is capable of aerobic respiration and anaerobic respiration but not fermentation. It can produce H2Sdoes not produce tryptophanase, and is motile by a flagellum . Based on the above characteristics, describe your expected results for Pseudomonas aeruginosa in a SIM deep .

coli, mak you believe will grow faster (37° C or 30° C temperature) and why. Results• Time Absorbance 30 °C Absorbance 37 °C Generation time Generation time t=0 min at 30 °C at 37 °C 0.05 0.05 t= 20 min 0.06 0.07 t= 40 min %3D 0.1 0.16 0.28 0.21 0.44 t = 60 min t= 80 min %3D 0.95 Complete the graph. Make sure this figure has a description and all other labels are included. Once you have completed graphing the points, draw a best-fit line for each of your data sets by eye Questions: 1. Which data point can be the first to be considered in log phase for each line? (It will be the first point that seems to be described by your best-fit line.) For the 30° C culture the -minute point is the first one likely to be in log phase. For the 37° C culture the -minute point is the first one likely to be in log phase. Incubation Temperatures - Growth Bio 40- Fall 2019 Page 6

Give detailed Solution with explanation needed...don't give Handwritten answer..don't use Ai for answering this

Escherichia coli O157:H7 is a foodborne pathogen and can cause serious illness in humans by producing toxins that can severely damage the lining of intestines and kidneys. What are the oxygen requirements of coli? What result would you observe in the MTM agar deep test? Explain. Research on the growth requirements of this bacterium is required. What is the role of oxygen and cytochrome c oxidase in aerobic respiration? Why does the nitrate reduction tube turn red after the addition of zinc? Clostridium tetani is a common soil bacterium and causes tetanus. Would you expect tetani to possess the enzyme catalase? Explain. Research on the growth requirements of this bacterium is required.