Question

What is Photosythesis. Explain.

Answer 1

Welcome to OpenStudy @Riddler4670 !

Answer 2

pho·to·syn·the·sis
ˌfōtōˈsinTHəsis/Submit
noun
1.
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Answer 3

Hope this is helpful!

Answer 4

google it lol

Answer 5

Chloroplasts create chlorophyll but what does that do

Answer 6

Chlorophyll is a green photosynthetic pigment found in most plants, algae, and cyanobacteria.

Chlorophyll is vital for photosynthesis, which helps plants obtain energy from light. Chlorophyll molecules are specifically arranged in and around pigment protein complexes called photosystems, which are embedded in the thylakoid membranes of chloroplasts. In these complexes, chlorophyll serves two primary functions. The function of the vast majority of chlorophyll (up to several hundred per photosystem) is to absorb light and transfer that light energy by resonance energy transfer to a specific chlorophyll pair in the reaction center of the photosystems. Because of chlorophyll’s selectivity regarding the wavelength of light it absorbs, areas of a leaf containing the molecule will appear green. When a leaf was tested using iodine, only the green areas were shown as positive for starch, meaning that photosynthesis will not occur without chlorophyll. Photosystem II and Photosystem I have their own distinct reaction center chlorophylls, named P680 and P700, respectively. These pigments are named after the wavelength (in nanometers) of their red-peak absorption maximum.

The function of the reaction center chlorophyll is to use the energy absorbed by and transferred to it from the other chlorophyll pigments in the photosystems to undergo a charge separation, a specific redox reaction in which the chlorophyll donates an electron into a series of molecular intermediates called an electron transport chain. The charged reaction center chlorophyll (P680+) is then reduced back to its ground state by accepting an electron. In Photosystem II, the electron which reduces P680+ ultimately comes from the oxidation of water into O2 and H+ through several intermediates. This reaction is how photosynthetic organisms like plants produce O2 gas, and is the source for practically all the O2 in Earth's atmosphere.

A simple experiment can show how chlorophyll is associated with photosynthesis. After destarching a leaf from a variegated plant and exposing it to light for several hours, starch can be seen to rapidly accumulate again by staining with iodine solution. Variegated leaves have green areas that contain chlorophyll and white areas that do not. The iodine-stained starch only accumulates in regions of the leaf that were green and therefore contained chlorophyll. This shows that photosynthesis does not occur in areas where chlorophyll is absent, and constitutes evidence that the presence of chlorophyll is a requirement for photosynthesis.

Answer 7

Source: http://in.answers.yahoo.com/question/index?qid=20070423051913AAKABNK

Answer 8

Ok thanks a bunch all I needed to know was that chlorophyll creates energy! Lolh

Answer 9

lol. Better to overdue than undershoot.