Why is the sterile technique (the flame sterilization of wire loop) followed during the fermentation lab simulation?   A.  To ensure mono cultivation of yeast cells.   B.  To ensure optimal pH for the yeast cells to grow.   C.  To remove unwanted compounds, such as ammonia, in the medium.   D.  To remove oxygen and maintain anaerobic conditions.

The simple dichotomous key below can be used to distinguish between the three bacteria used for the fermentation experiment. Use the key to identify which of the three bacteria are indicated by A, B, or C in the key.

Based on the growth curve, which ONE of the following best describes what would happen if sample of culture in the presence of drug B is inoculated onto drug-free growth medium?   Select one: A.   Growth present, but cell count increased by at least 99.9% of the original culture   B. No growth after 24 hrs C. Growth at 24 hrs D. Not possible to predict because the culture could either be alive or dead E. Growth present, but cell count reduced by at least 99.9% of the original culture

Arrange the following steps in the experiment regarding the effect of temperature on fermentation (anaerobic respiration) 1 4 Sugar and water are mixed Measure the height of foam is measured Test tubes are placed in water bath Yeast and glucose solution are mixed Graph the height vs temperature

For which purpose the method of measuring biochemical demand is used?

Your nasal sample showed colonies with a clear halo around them on blood agar. What can you determine based on that observation? a. The organism is a mannitol fermenter b. The organism is able to utilize starch c. The organism is reducing the hemoglobin and damaging the erythrocytes d. The organism is beta-hemolytic e. The organism is unable to use red blood cells as a nutrient source

Name the two general categories of fermentation products.

Define the following terms: a. autotroph b. chemoautotroph c. photoautotroph d. photoheterotroph e. chemoheterotroph

Give typing answer with explanation and conclusion

3. a. Explain what needs to be considered when using "water" as part of the fermentation medium! b. Why sterilization using chemicals is not suitable for sterilization of fermentation media?