pigment&color
when light shines on material contains pigments, three things happen to different wavelength:absorbed, transmitted, reflected
Identifying Chloroplast
By using paper chromatography, canobserve different pigments in green leaf
pigments
By using paper chromatography, canobserve different pigments in green leaf
Harvesting light energy
-in the chloroplast; within thylakoid membrane, photosystem exits.
-each time pigment absorb light energy, one of pigment's electron gain energy
key terms:
wavelength: difference between two adjacent waves
electromagnetic spectrum: the range of types of electromagnetic energy
pigment: chemical compound that make substance's color
paper chromatography: laboratory technique that is used to observe the different pigments in green leaf
photosystem: clusters that is arranged by chlorophyll and other membrane within thylakoid molecule
concept check:
1. The leaf appears green because of the light that leaf observes. The leaf observes different types of light but there isn't alot of green pigments that it is gaining. Therefore, the pigment is showing the green by changing other ones to make seem like green in appearance.
2. When chlorophyll a gains the light, the change of the plant would not be no longer green, instead would be different color which doesn't get much light on.
3. Besides oxygen, two molecules that are produced are ATP and NADPH which are both transfered to calvin cycle and used for making more products.But also, the hydrogen ions are also released as a result.
4. In the chloroplast, the light reaction takes place at the thylakoid membrane. The reactions are tkaen on the membrane and the molecules are transferred from one stage to the other by floowing the routine of the membrane.
No comments:
Post a Comment