Observations

Observations

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  Submitted by: Lagang, LoreineY. Punay, Jewel Vanilli M. Submitted to: Ma’am Shirley Agbuya Micua
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  2 | Page Basisof observation for colors: Meanings of smells: SOUR- having an acid taste: having the unpleasant taste or smell of food that is no longer fresh. MUSTY- an unclean, stale and possibly moldy smell ROTTEN- being in a state of putrefaction or decay; decomposed; having a foul odor resulting from or suggestive of decay; putrid.
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  3 | Page Observations FIRSTDAY Jar A Jar B Jar C Growth of Maggots None None None Smell Sour Sour Sour Color of fruit or meat Neapolitan color Neapolitan color Neapolitan color Growth of fungi None None None SECOND DAY Jar A Jar B Jar C Growth of Maggots None None None Smell Musty Sour Sour
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  4 | Page Colorof fruit or meat Pale Daffodil Neapolitan Pale Daffodil Growth of fungi Visible (half of the fruit) Visible (half of the fruit) Visible THIRD DAY Jar A Jar B Jar C Growth of Maggots Visible None None Smell Musty Rotten Musty Color of fruit or meat Poached Pear Pale Daffodil Pale Daffodil Growth of fungi Visible (whole fruit) Visible (whole fruit) Visible (half fruit) FOURTH DAY Jar A Jar B Jar C Growth of Maggots Visible None None Smell Rotten Rotten Rotten Color of fruit or meat Poached Pear Pale Daffodil Pale Daffodil Growth of fungi Visible Visible Visible
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  5 | Page FIFTHDAY Jar A Jar B Jar C Growth of Maggots Visible None None Smell Rotten Rotten Rotten Color of fruit or meat Sun Shower Pale Daffodil Poached Pear
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  6 | Page Growthof fungi Visible Visible Visible Conclusion At first, we’ve picked three different setups to differentiate the changes that might happen that will prove the biogenesis or life exists from another life form. The three setups: jar with the mouth open, tightly closed lid of the jar, and the gauze on the mouth of the jar. On the duration of five days, it was observed that changes in smell, color, fungal growth and appearance of maggots. However, we can differentiate the three setups from how fast the changes occur. The first is the fastest one, next the third one, and last the second jar. From there, we can conclude that the changes occur as to how large the opening of a jar is and how air can circulate or how large the pathway for air is making it easier for insects to lay their eggs; color changes as how well can the fruit absorb the room temperature and the different elements in the air. Post- Laboratory Questions 01.What is controlled experiment? An experiment in which an observer tests a hypothesis by looking for changes brought on by alterations to a variable. In a controlled experiment, an independent variable is the only factor that is allowed to be adjusted, with the dependentvariable as the factor that the independent variable will affect. 02.What are the manipulated variables in this experiment? The manipulated variables here on the experiment are the conditions of the jar. First, the jar with the mouth left open, then the close jar and last, the jar with gauze on top.
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  7 | Page 03.Whydo you observe growth of fungi in all setups after several days of experiment? The growth of fungi in all setups is visible because based on research, there are several factors that affect the growth of fungi and they are seen on the conditions of the jars. First the temperature; at room temperature, there is a bigger chance for the growth of fungi, however, there will still be growth of fungi even at cold temperature if the other factors are also available but it will take more days for it to be developed. Next thing that affects the growth of fungi is the moisture. There is moisture in all setups because the presence of air and water coming from the object (fruit)creates the moisture. Third, the fungi grow because of the nutrients they get from the food. Lastly, the air, stagnant or not, is one of the factors. Given on the said experiment, it is at room temperature; the moisture is evident because of the food itself. Its juices came out as the heat increases. The air is also available through the open mouth of the jar, the tiny openings of the gauze and a stagnant air in the tightly closed jar. Lastly, lemon has many nutrients that is why growth of fungi is really possible.