PKUSER!!

Phenylektonuria is an inherited disease. The only way to get it is if both of your parents transfer 2 copies of the mutated gene, one from each of them. Some symptoms include, epilepsy, a smaller than normal head, and mental retardation. These symptoms are generally picked out at birth. The only treatment option is to adhere to a low protein diet that some physicians refer to as the diet of life. PKU is when a genticly mutated gene disrupts the PAH enzyme which leads to an excess of phenylalanine in the brain which can lead to phenylalanine poisoning. This is where the mental retardation and the epilepsy come from. The phenylalanine poisons neurons.

Arsenic

Arsenic is one of the more harmful poisons to humans considering the variety of ways that they can be exposed to it. You can be exposed to through many different ways including:
-Ingestion
-Inhalation
-Skin contact
-Eye contact
Arsenic is most harmful when inhaled, or ingested. Inhaling or ingesting high levels of arsenic can result in death. Direct contact with arsenic, only a small amount will enter the body usually resulting in nothing more than warts and/or corns on the palms of the hands, the bottom of the feet, or the torso. Being exposed to a low level of arsenic can change the color of the skin slightly. Arsenic is much more harmful to children than adults, if a pregnant woman is exposed to arsenic the child may:
-be born with defects such as:
- low birth weight
- loss of hearing
- low IQ levels
- loss of eye sight
- Dye before or during birth
- Be more susceptible to skin cancer
There are many ways to prevent the arsenic poisoning from reaching a point that becomes lethal or cause serious damage. Flushing eyes with water is one way to prevent loss of vision.


dhss.delaware.gov/dhss/dph/files/arsenicfaq.pdf
-Find this article here.

Photosynthesis

Photosynthesis Dry Lab


Supplies:
Bromothymol blue,
container
aquarium snail
water
elodea
aquarium plant

Procedure:
1. Fill the container with 500Ml Bromothymol Blue (BTB)

2.Mix 500 Ml water into the BTB

3. Put aquarium snail in the BTB

4.add elodea, let sit 1 hour in a well lit room

5.remove the snail and replace it with an aquarium plant.

6. Place in a dark room for 3 hours.

Obsevations:
1.adding water to bromothymolblue is blue-green
-because water mixed with co2 makes carbonic acid, and when mixed with bromothymol blue, it changes to a blue-green color. Because the acid mixes with the neutral BTB to lower the PH.

2.Water plus bromothymol blue plus an aquarium snail turns yellow.
-the snail emits acid and this causes a reaction that lowers the PH of the water changing it to yellow

3. Water plus bromothymol blue plus elodea, an aquarium plant, is blue-green in light.
-green plants photosynthesize in light and respire all the time. The plant takes in all the carbon dioxide returning the water to an almost neutral state.

4. Water plus bromothymol blue plus a snail plus elodea is blue green in light and yellow when in the dark for three hours.
- Carbon dioxide in water produces sugars and oxygen when sunlight is present btb changes to yellow when in acid and back to blue green when returned to neutral PH.

Conclusion:
After a few experiments we found that acid changes the color of BTB by changing the PH, and changes back to the normal color when it is returned to a neutral state. Plant photosynthesize and constantly respire. Furthermore carbon dioxide mixed with water makes carbonic ascid.

https://docs.google.com/a/lajunta.k12.co.us/present/view?id=dhr6jc6r_06wq9tcf