Biology I organization and herarchization act.

Observation and statement problem:  why the limes to last a little periods on the jar fruit?

Hypothesis: High temperature increases the evaporation speed, she thinks that this is the cause for limes to last so little periods of time in the fruit jar and sheguesses that, if they are kept in the refrigerator, the low temperature will delay water evaporation and so, they will keep their juice

Experiment: She placed the first group in the fruit jar of the kitchen, and the second one on the refrigerator

Analyze experiment data and draw conclusions: which confirmed her that the refrigerator temperature allowed a better preservation of the limes, while those in the fruit jar were completely dry. She also cut, squeezed and measured the lime juiceof each group, she obtained 100 ml from the fruit jar group and 500 ml from the refrigerator one.

Communicate your results: Lupita concluded that temperature in the kitchen is high enough to make limes lose water by evaporation, while low temperature of the refrigerator delays this process and that’s why they keep their juice.

Observation and problem statement: how does the fungus affect bacteria growth?

Hypothesis: the fungus produces a substance that prevents bacterial growth and he also predicted that if bacterial cultures were put in contact with this fungus, then the death of bacteria would occur.

Experiment: he separated those dishes in two groups and applied two different treatments:

 Group A: bacteria culture in contact with the fungus.

 Group B: bacteria culture without the fungus.

Analyze experiment data and draw conclusions: He concluded that because fungus and bacteria compete in nature for the same mediumthat contain organic material, some species such as Penicillium have developed a way to produce a substance able to eliminate bacteria. He later called that substance “penicillin”.