Blog 25: Hypothesis

Hypothesis: The freshman that use the baking soda toothpaste will have a middle pH because sodium bicarbonate is a base and will neutralize the acids in the mouth.

Post 25: Human Experiment

Blood Pressure: The heart rate will be higher in taller people with a higher blood pressure because there is more track for the heart to pump blood through and more dense (right word?) blood.
Immune System Strength: People who are born via c-section will be more likely to get sick than people born vaginally because they did not receive the same exposures that come with a vaginal birth and do not have the antibodies to oppose various germs.

Hormone Levels: The hormone levels will increase after doing things such as viewing romantic movies because it stimulates the mind to release hormones while the person is thinking about what the people onscreen are doing.

Post 24: Experiment Ideas

Acid Levels

• Testing acid levels at the beginning of experiment & end of experiment
• (Hypothetically) change acid levels by not brushing teeth & eating acidic foods (like oranges?)

Blood Pressures

• Height & blood pressure affects heart rate
• Different heights & blood pressures compared to heart rates (see if they coincide)

Allergies

• Babies born through c-section births rather than vaginal births are more likely to get sick
• Send a survey

Lung Capacity

• Test holding breath
• See how long possible to do so
• (Might give an idea of lung capacity?)

Hormone Levels

•  Hormone levels before & after watching romantic movies

Reaction Time

• Reaction to events?

Blog 22: Errors

Well… this experiment has had many errors in its time. Whilst cutting the apples, we had neglected to actually measure them or weigh them afterword which, looking back, could have made some things easier and keeping the apples from being in alternate shapes, weights and sizes. Following this, we put Bacillus Cereus into our test instead of E. coli. This was a mistake that could easily have been avoided if we had read the labels which, upon looking back, may have also been a smart choice. Following that the petri dishes that we were using for our controls seemed to have been contaminated with other small, white bacterias which were growing in little clumps in several of the dishes. When we noticed the small little growths inside it we realized it could mean that the other dishes of the experiment could also have been contaminated. This could be caused by the fact that some of us a few times had forgotten to wear gloves and once the gloves had been torn with a slight hole in them. After this some of the petri dishes' agar shriveled up while other petrie dishes bottoms turned into a mushy soup which seemed strange but not unexpected since we had trouble controlling the amount of precipitation in the petri dish despite the fact that we had sealed the outside with a special tape but still had to set it right side up instead of the usual upside down position.

Blog 21: the Significance of Decomposition

The amount of sugar in fruit may effect rate of decomposition and bacteria growth, which in turn could help with compost and waste management. In compost the piles need to decompose and become part of the earth again and if the fruit has more sugar in it, it may do this more quickly.  The decomposition rate of fruit may also relate to bacteria and how they reproduce and grow and the rate in which they do. In general the speed fruit decompose deals in compost and the management of things such as food and ways to determine how quickly it will rot and be non-edible. 

Blog 20: The Data

Currently, we have no data as we cannot measure until the conclusion of our experiment. I shall update this properly when we have collected it.

Blog 19: the Experiment

So far our experiment has been extremely choppy as we have evidently not put actual E. coli into the dishes but despite this we have been managing and have adjusted our hypothesis accordingly. 

We have noticed change in the dishes though as the apples have been rotting. (Side note: they smell awful too.) We have also found some growths in the dishes that we were going to put our control apple in (we had to redo our controls since we had not put agar into the original control dishes) which mean there may be contamination in the dishes. 

There has been some condensation on the lids since we have not been able to flip them so the agar shifts from soupy to dry on a regular basis but still manages to remain non-dehydrated. 

Blog 18: The Research!

https://docs.google.com/document/d/1M-sKDdNzlM4B4nCS7DPY7G6mwbqve4Q4ADoZWYFB8q0/edit

Blog 17: the E. coli!! Our experiment notes.

https://docs.google.com/document/d/1M-sKDdNzlM4B4nCS7DPY7G6mwbqve4Q4ADoZWYFB8q0/edit

Blog 15: E. Coli

E. coli is a bacteria that is usually safe to have in the body. It makes vitamins that the body needs from inside our bodies which then absorb those vitamins which aids digestion. There is another form of E. coli though known as O157:H7 which is a virus that changes the genetic material inside the bacteria and as it multiplies it causes the disease e. coli. These virus-effected bacteria then produce a toxin that is harmful to the body and causes damage to the intestines and hemorrhaging as well as loss in water and salt and damage to blood vessels.