The nitrogen cycle would be the most affected, as nitrogen fixing bacteria represent a major part of the nitrogen cycle in the environment.
If all soil bacteria on Earth were to suddenly disappear, which nutrient cycle would you expect...
Soil Ecology How is nutrient uptake different between Gram +ve and Gram –ve bacteria? Which features of the cell wall of each limit and regulate what gets in? Which type of imbalanced medium, or nutrient deficiency, has the most severe effect on bacteria survival? How is the immobilized bacteria biomass turned over? What are the main grazers of bacteria? What happens to the soil if all the nematodes are removed from the field? Which bacteria metabolic pathways are active at...
Topic: Soil Bacteria Which habitat do you expect will have higher species diversity, urban creek or campus? Why?
which type of soil would you expect to have the most available water? Sand Silty clay Loam Clay If the temperature of a plant is 18C and the ambient temperature is 14C, which process will result in a net input of heat from the air to the plant ? Conduction Convection Evaporation None of the above
Which of the bacteria (A-E) would you expect to be catalase positive and why? There may be more than one of the bacteria positive for catalase. A. Obligate Aerobe B. Facultative Anaerobe C. Aerotolerant Anaerobe D. Obligate Anaerobe E. Microaerophile
1. On which plate(s) would you expect to find bacteria most like the E. coli on the source plate? Explain. 2. On which plate(s) would you find only genetically transformed bacterial cells? Why? 3. What is the purpose of the control plates? Explain the difference between the controls and why each one is necessary. 4. Why would one compare the -DNA/+Amp and DNA/+Amp plates?
Under what conditions would you expect mycorrhizal symbiosis to have the most NEGATIVE (least beneficial) fitness consequences for bean plants? A. When they are planted in tropical soils with very low nutrient availability B. When they are planted in Nebraska soils that have abundant soil pathogens C. When they are planted in Nebraska soils to which urea fertilizer has been added D. When they are planted in Nebraska soils to which NPK fertilizer and pesticides have been added E. When...
There may be more Which of the bacteria (A-E) would you expect to be catalase positive and why? than one of the bacteria positive for catalase. A OBLIGATE AEROBE B FACULTATIVE ANAEROBE CAEROTOLERANT ANAEROBE D OBLIGATE ANAEROBEE MICROAEROPHILE Extra: In a Gram stain one step could be omitted and still allow differentiation between Gram positive and Gram negative bacteria. What is that step? Why?
Bacteria are frequently adapted to many environments. For gut bacteria which produce both spores and toxins, where else would you expect to find them? a. Water b. Soil c. Oral cavities d. Skin e. A and C f. All of the above
Membrane fluidity for bacteria is critical. What type of fatty acids would you expect bacteria to synthesize as growth temperature increases? Why type of fatty acids would you expect bacteria to synthesize as growth temperature decreases? Why cannot bacteria simply synthesize the same type of fatty acids regardless of temperature?
Under what conditions would you expect mycorrhizal symbiosis to have the most NEGATIVE (least beneficial) fitness consequences for bean plants? A. When they are planted in tropical soils with very low nutrient availability B. When they are planted in Nebraska soils that have abundant soil pathogens C. When they are planted in Nebraska soils to which urea fertilizer has been added D. When they are planted in Nebraska soils to which NPK fertilizer and pesticides have been added E. When...