photosynthesis

Photosynthesis


My definition on Photosynthesis is a process on plants that make their own food. But it's more copulated than that. The process in plants and some bacterias use the energy from sunlight to create chemical energy and store it into bonds of sugar. The plant needs water and sunlight and to make this happen. This happens in the chlorplast, which is in the plants leaves is where it release 02. The upper part of the leave upper and lower part of the leave doesn't have a chlorplast but is there to protect the rest of the leaf. The middle is the stomate and it is used for air exchange. They let in the CO2 and release the 02 in the air. The releases oxygen is what we need to live. Chlorophyll looks green because it absorbs red and blue light, making these colors not to be seen by our eyes. It is the green light which is not absorbed that finally reaches our eyes, making chlorophyll appear green.  The cellular respiration convert it into ATP. The sunlight is use for chemical energy and it has green pigment chlorophyll. That why the plants are green.

Dry Lab

Procedure:

• Water plus bromothymol blue is blue-green because carbon dioxide in water produces carbonic acid. 
• Water plus bromothymol blue plus an aquarium snail turns yellow because (BTB) is blur-green liquid which changes to yellow color in acid and back to blue-green when returned to neutral pH.

• Water plus bromothymol blue plus elodea, an aquarium plant, is blur-green because carbon dioxide plus water yields sugar and oxygen when chlorophyll and sunlight are present. 
• Water plus bromothymol blue plus a snails plus elodea is blue- green in light and yellow when left in the dark for three hours because Animal respire, green plants photosynthesize in the light and respire all the time, sugar plus oxygen yields carbon dioxide plus water and energy.

Materials: test tubes, bottle of bromothymol blue, pond water, straw, snail, and a plant ( elodea)

Procedure:get the test tube and fill it about half way with water.  Then put 20 drops of bromothymol blue into the test tube. After that get the straw and blow bubbles into the liquid in the test tube. record the observations.
-second test tube, fill it half way with water. Put 20 drops  of blue bromothymol in the water.  Then place the snail into it.  After 5 mins record the observations.
3rd test tube. - do the same amount of water and same number of drops. but put the plant in the test tube. After 5 mins record the observations.
4th test tube- same amount of water and same number of drops. Place the plant and snail inside the tube and place it into a dark area, no sunlight will hit it

Questions: what does sugar have to do with this?