The optimal temperature for mesophiles is 37 degrees Celsius. ? True ? False
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Step 1: Mesophiles are organisms that thrive at moderate temperatures, typically between 20°C and 45°C. Show more…
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1. All microorganisms require a neutral pH and medium temperatures to survive. TRUE OR FALSE. 2. The term mesophile is used to classify organisms based on optimal ___ conditions. a. pH b. nutrient c. salt d. temperature. 3. A microorganism that is harmed by the presence of oxygen and requires an oxygen-free environment is known as... a. an aerotolerant anaerobe b. an obligate anaerobe c. an obligate anaerobe d. a facultative anaerobe. 4. Which of the following can be used to grow obligate anaerobes? a. two of these are correct b. nutrient agar c. anaerobe jar d. fluid thioglycollate medium. 5. The ____ growth temperature is a small range of temperatures in which the microbes experience the fastest rate of metabolism and growth. a. maximum b. two of these are correct c. minimum d. optimum. 6. Some organisms such as Serratia marcescens can exhibit similar growth rates at different temperatures but express different phenotypic characteristics. TRUE OR FALSE. 7. A mesophile grows best in... a. high salt concentrations b. moderate temperatures c. low oxygen concentrations d. hot temperatures. 8. What happens when an organism is placed in environmental conditions outside their normal pH range? a. cells crenate b. cells burst c. cell membranes become rigid d. proteins denature. 9. In an isotonic solution, water moves in and out of the cell at a similar rate. TRUE OR FALSE.
Sri K.
True or False All bacteria have their optimum environmental surroundings and temperatures in which they thrive the most.
Aparna S.
In your write up, answer the following questions. 1. What is the maximum growth temperature for E. coli under these conditions (+ or - 1°C)? 2. What is its optimal growth temperature under these conditions (+ or - 1°C)? - Since E. coli normally grows in your gut, speculate on why its optimal growth temperature is different from the commonly cited temperature of a normal healthy human - 37°C. - Given what is known about humans, why is it unlikely that a thermophile or a psychrophile would be a human pathogen? - How does lowering the temperature 15°C from the optimal growth temperature affect growth rate? - What type of organism is E. coli (in terms of temperature preference)? Why is your characterization of E. coli tentative? What kinds of data would lead you to modify your characterization?
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