PRACTICA DE LABORATORIO

OBJECTIVE:

Demonstrate that the theory of Sir Alexander Flemming about the cell is right because based on the theory, demands that during the process of a crop there is an agent on the air called Penicillin natatum in which at the moment of contact this crates antibacterial agents.

HYPOTHESIS:

The chicken soup, by its organically elements it’s probably that the Penicillin notatum could get in contact with the soup creating the antibacterial agents.

THEORIST FOUNDATION:

In 1928, Sir Alexander Fleming observed that colonies of the bacterium Staphylococcus aureus could be destroyed by the mold Penicillin notatum, proving that there was an antibacterial agent there in principle. This principle later lead to medicines that could kill certain types of disease-causing bacteria inside the body. Bacteria constantly remodel their peptidoglycan cell walls, simultaneously building and breaking down portions of the cell wall as they grow and divide.

At the time, however, the importance of Alexander Fleming's discovery was not known. Use of penicillin did not begin until the 1940s when Howard Florey and Ernst Chain isolated the active ingredient and developed a powdery form of the medicine.

MATERIALS:

Chicken soup

2 bowls

Penicillin (liquid)

EXPERIMENT:

1- Boil a piece of chicken and prepare a chicken soup (no vegetables, just meat)

2- Get it into 2 separated bowls

3- Leave them outdoors so it can grow bacteria, after several time (1-2 days)

4- Put penicillin into one of the bowls and observe the reaction and the differences

VARIABLE:

Chicken soup – Independent

2 bowls – Independent

Penicillin – Dependent

STRUCTURE OF DATA (Results):

During our experiment we saw different changes and the reaction of the chicken soup with the penicillin.

The reaction and changes that we saw in the two proofs that we have:

- The change of color, the color turn the original yellow to a clearer tone.

- The smell changed, the proof that has penicillin we can´t perceived the rotten smell as we did in the original soup.

- When we poured the penicillin, the moho started to change the color and disappear.

CONCLUSION:

the penicillin made a big difference inside the chicken soup, the moho and the smell started disappearing after a little time, the penicillin acts very fast inside of our system and the blood pressure helps the medicine to get through the body and heal it, killing the viruses and bad bacteria. We support Fleming’s theory about the antibacterial agents of the penicillin, in our opinion, one of the most effective medicines in the history and certainly a great help for the human race to overcome certain diseases the body suffers.

...