The student used three different 250mL flasks, each with 10g of sugar added to them. In flask one 3g of yeast was added, in flask two 6g of yeast was added, and in flask three 9g of yeast was added. Each flask then received 200mL of warm water and then swirled to mix. A balloon was placed over the mouth of each flask to capture the CO2  produced.    After waiting for one hour the student measured the circumference of the balloons and found the following: Flask one had a circumference of 10cm, flask two had a circumference of 14cm, and flask three had a circumference of 22cm.  Create a data table that would be used to collect and organize the data from this experiment.

How to test that plant contains starch or not? List the steps sequentially.

The stool samples submitted by the two friends were enumerated following enrichment. The technician prepared serial dilutions. A volume of 1 mL of stool was mixed with 1 mL of diluent. From this dilution, they then took 1 mL and added it into 1 mL of diluent. The operation was repeated 5 more times. After finishing the serial dilution, 100 μ�L has been spread on different TSA plates. Following 24h incubation, the technician counted 23 colonies at the dilution 4.   What is the bacterial concentration in the enriched culture? [1 mark]

Explain why dichloromethane is a good solvent to remove the fat from the milk? Can you use organic solvent like ethanol to replace dichloromethane in this experiment?   Experiment: Quantitative analysis of biological sample ingredients (Milk Analysis)

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

250 uL of 1M azide was added to a 25 mL yeast solution. What was the concentration of azide in the yeast culture? (use proper units)

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?

Enzyme Potato Experiment   Observation Interpretation Test Tube 1 H2O2 + 1 piece uncooked potato + 1 mL H2O     Test Tube 2 H2O2 + 1 piece cooked potato + 1 mL H2O     Test Tube 3 H2O2 + 1 piece uncooked potato (cut into small pieces) + 1 mL H2O     Test Tube 4 H2O2 + 1 piece uncooked potato + 1 mL vinegar

In the hydrolyzing polysaccharides with saliva, the instructor followed the steps in the order listed below: prepared two tubes with starch (tubes 1 and 2); tested samples from both tubes with the IKI test and the Benedict's test; added saliva to tube 2 both tubes were immediately placed in a 37°C water bath for 15 minutes; • removed the tubes, and tested samples from both tubes with IKI and the Benedict's. Which of the following are correct about the results of the tests for a group of students who did all of the steps correctly. If hydrolysis can occur, assume that all polymers are hydrolyzed. Select ALL of the possible answers. O Tube 1 should have a negative IKI test. O Tube 2 should have a positive Benedict's test. O Tube 1 should have a negative Benedict's test. O Tube 2 should have a positive IKI test. O Tube 2 should have a negative IKI test. O Tube 2 should have a negative Benedict's test. O Tube 1 should have a positive IKI test. O Tube 1 should have a positive Benedict's…

What would be the best answer?