You discover a previously undescribed prokaryote and in your testing you determine that oxygen is toxic to it. Your new discovery is ain) facultative anaerobe. obligataerobe. facultative aerobe. obligate anaerobe.

A chemolithoautotroph is respiring using only iron (Fe3+) and nitrite (NO2-). This bacterium does not consume organic molecules. How does this organism make ATP?

The absence of ________ leaves obligate anaerobes susceptible to killing by oxygen.   vitamin E superoxide dismutase peroxidase carotenoids catalase

In anaerobic respiration, what will happen if a bacterium uses nitrates as the terminal electron acceptors? nitrogenlaxation nitrification denitrification both nitrogen fixation and nitrification

select a microbe that has proven to be either environmentally or socially beneficial to human beings. You are not restricted to bacteria, but the organism chosen must be considered a microbe. In your post, include an explanation of the microbe's discovery, its use (either environmentally or socially), and its normal habitat.  You should cite your research

The following table depicts characteristics of five prokaryotic species (1-5). Use the information in the table to answer the following question. Species 1 Species 5 None Trait Plasmid Gram Staining Results Nutritional Mode Species 2 None Species 3 R Species 4 IF Positive Positive Negative Negative Negative Chemohetero- Chemoauto- troph Chemohetero- Chemohetero- Photoauto- troph Anaerobic troph troph troph Aerobic Specialized methanotroph Metabolic (obtains carbon Pathways and energy from methane) Anaerobic methanogen Anaerobic alcoholic fermentation Anaerobic lactic nitrogen fixation acid fermentation and aerobic photosystems I and II Other Features All of the species shown have a cell wall that consists partly of an outer membrane of lipopolysaccharide EXCEPT Internal membranes Fimbriae Flagellum Pili Thylakoids species 1 only species 2 only species 3, 4, and 5 species 1 and 2 only 0 O 0 0

What do you mean by obligate anaerobes? Give some examples.

The following table depicts characteristics of five prokaryotic species (A- E). Use the information in the table to answer the following question. Trait Species A Species B None Species C R Species D Species E None Plasmid Gram Staining Variable Results Nutritional Mode Variable Negative Negative Negative Chemohete ro- Chemohete ro- Photoauto- troph Anaerobic butanolic fermentation Chemohete ro- Chemoauto- troph Aerobic methanotroph methanogen (obtains carbon and energy from methane) troph Anaerobic troph Anaerobic lactic add fermentation troph Anaerobic nitrogen fixation and aerobic photosystems I and II Thylakoids Specialized Metabolic Pathways Other Features Fimbriae Intemal Flagellum Pili membranes Which two species should have much more phospholipid, in the form of bilayers, in their cytoplasms than most other bacteria? species B and E species C and D O species A and C O species A and B

True or False: When bacteria exist in a multi species biofilms, they are always more resistant to antibiotics than when they exist as a single species population.

Growth medium: You are running different experiments on microbes and need to make sure you choose the correct medium. Need to growa wide range of bacteria and fungi from the environment [ Choose ] [Choose ] Need to select for the growth of fungi Sabouraud-Dextrose Agar (SDA) (yeasts & molds) MacConkey Agar (Mac) Need to grow fastidious baterial pathogens SCC Agar (SCCA) of humans MSA Need to differentiate bacteria based on Tryptic Soy (TS broth or TSA) hemolysis O'Dougals Agar (ODA) Blood Agar (BA) Need to select for salt tolerant bacteria Sacto Agar (SA) EMB Need to select for members of genus TChoose ] Staphylococcus_ in pus from an abscess Need to şelect for members of bacterial [ Choose ] family Enterbacteriaceae. e.g E.coli, Enterobacter, Salmonella, Yersinia, Klebsiella, Proteus Need to differentiate between lactose [ Choose ] fermenting and non-lactose ferementing enterics