Student V and student W wanted to do metabolism experiments with student V doing a fermentation experiment and student W doing an aerobic respiration experiment. Student W used 6 test tubes with balloons tied to the top of each test tube, but in each test tube student W put germinated beans. Student W used the same temperatures as student V. After 45 minutes, student W noted that there was no inflation of any balloon. Why did this happen?

Bread making involves ethanol fermentation and typically uses yeast, sugar,flour, and water. Why are yeast and sugar used?

Practice Question #1 Each of the following statement FALSE. Tell me what is incorrect with the statement and correct it when possible. For example, if the statement says: the sky is red during daytime. You would answer: the sky isn't red during daytime, it is blue. a) Staphylococcus aureus use MreB proteins to organize their morphology (shape) into cocci. b) Most bacteria will have maximum growth in a glucose-rich environment such as maple syrup. c) The table below shows that Streptococcus pyogenes is a facultative halophile. Amount of Growth Staplnylococcus aureus Streptococcus pyogenes Nutrient agar ++ ++ Nutrient agar + 7.5% NaCl +

How much water, yeast, glucose, and  flour is used in the experiment

1st Bag: shredded wheat original cereal, Warm water, and yeast (no sugar) 2nd Bag: Cinamon Toast Crunch, Warm Water, and yeast  3rd Bag: Fruit Loops, Warm Water, and yeast  (all these bags were placed under a heat lamp for 25 minutes) (After these bags were placed under the heat lamp and they all had different reactions after put under the heat lamp, due to the sugar contents in the cereals) So the question is:  The sugar content was higher in some bags than others. What did you observe in the bags containing more sugar?

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

Yeast cells were incubated with and without glucose at three different temperatures for four minutes, during which the rate of CO2 production was measured with a CO2 sensor. What conclusions can be drawn from the results of the experiment?

The following is the PCR reaction that is programmed in the thermocycler to amplify the cheek cell DNA: 1.  95°C for 2 minutes2.  95°C for 30 seconds3.  58.1°C for 30 seconds     4.  72°C for 45 seconds5.  Repeat steps 2-4 thirty (30) times6.  72°C for 3 minutes7.  Hold at 16°C indefinitely Which steps represent the denaturation, annealing and extension steps? a. Step 2 = Denature; Step 4 = Anneal; Step 6 = Extend b. Step 4 = Denature; Step 6 = Anneal; Step 7 = Extend c. Step 3 = Denature; Step 4 = Anneal; Step 6 = Extend d. Step 2 = Denature; Step 3 = Anneal; Step 4 = Extend

What does the Kirby-Bauer (disk diffusion) test assess? O The ability of a microorganism to produce an antibiotic. O The ability of a microorganism to be susceptible to antibiotics. O The ability of a microorganism to swim away from an antibiotic. O The ability of an organism to mutate in the presence of an antibiotic. O The ability of a microorganism to synthesize an antibiotic.

Describe yeast in a Warm Water bath, Room Temp,  and In the Fridge 1. Which glass of yeast is the slowest to produce foam? Why? 2. Which glass of yeast produced foam fastest? Why?  3. Do the results of this experiment support your hypothesis?   4. What was the independent variable in this experiment? 5. What was the dependent variable in this experiment? 6. Construct a properly labeled graph showing how temperature influences carbon dioxide production by yeast.