Question

Activity 3: Yeast Fermentation of Different Carbohydrates? Experiments test the predictions made by a hypothesis. The hypothesis should be stated very clearly and unambiguously. If the results of the experiment were predicted by the hypothesis, the results support the hypothesis (NOT “prove the hypothesis is true"). If the results are different than those predicted by the hypothesis, then the hypothesis is retested, modified or discarded. Many times an experiment is actually testing the Null Hypothesis. The null hypothesis states that there is no difference between the experimental and control groups. In the this experiment we'll be testing the ability of yeast to ferment different carbohydrates. The carbohydrates we'll be testing are glucose, sucrose, maltose, lactose, and startch. All the carbohydrates are 3% solutions in water. In addition we will include a tube without added carbohydrate (water will replace the carbohydrate used in the other experiments.

Answer 1

1. In the above experiment the use samples- glucose(monosaccharide),maltose,Sucrose & lactose(disaccharide) and starch(polysaccharide)

so it can be hypothesized that the east will fermantate the Glucose(monosaccharide) first

then it will fermantate the sucrose,maltose and lactose (disaccharide) and lastly it will fermantate the starch(polysaccharide).

2.I think that this experiment null hypothesis will not same as the control group or sample doesn't contain carbohydrate.So the null hypothesis will fail.