Kloropil: Béda antarrépisi
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Kaca anyar: right|thumb|250px|Kelir héjo daun téh alatan ayana kloropil [[Image:Chlorophyll-a-3D-vdW.png|thumb|right|250px|Molekul kloropil dina modél eusi-rohangan]... |
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Baris ka-16:
An easy experiment can show how chlorophyll is needed for photosynthesis.
Some plants have variegated leaves with white and green areas. Take such a plant and put it in the dark for a few days. Take a leaf and make a "mask" to cover it out of aluminium foil. Cut two holes (one round, one square)in the foil such that one hole exposes a green part of the leaf and the other a white part of the leaf. Place the leaf in the light for an hour or so. If the leaf is exposed to a solution of iodine the green part of the leaf exposed to the light will show up black and the white part will not stain black. Furthermore, the black patch will have the same shape as the hole that you had cut in the foil. The iodine-stained starch only piles up in areas of the leaf that were green, showing that only those areas are photosynthetic. This proves that photosynthesis doesn't occur in the areas where there was no chlorophyll.
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== Wangun kimia ==
Kloropil téh pigmén [[klorin]] nu wangunna sarta dijieunna sarupa jeung pigmén [[porfirin]] séjén kawas [[hémé]]. Di tengah cingcin porfirin aya [[ion]] [[magnésium]], sedengkeun ranté gigirna mah bisa béda-béda, tapi ilaharna mah ngandung ranté [[pitol]]. Aya sababaraha bentuk kloropil nu aya di alam:
{| class="wikitable"
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| Rumus molekul
| C<sub>55</sub>H<sub>72</sub>O<sub>5</sub>N<sub>4</sub>Mg
| C<sub>55</sub>H<sub>70</sub>O<sub>6</sub>N<sub>4</sub>Mg
Baris 36 ⟶ 35:
| C<sub>54</sub>H<sub>70</sub>O<sub>6</sub>N<sub>4</sub>Mg
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| -CH=CH<sub>2</sub>
| -CH=CH<sub>2</sub>
Baris 43 ⟶ 42:
| -CHO
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| -CH<sub>3</sub>
| -CHO
Baris 50 ⟶ 49:
| -CH<sub>3</sub>
|-
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| -CH<sub>2</sub>CH<sub>3</sub>
| -CH<sub>2</sub>CH<sub>3</sub>
Baris 57 ⟶ 56:
| -CH<sub>2</sub>CH<sub>3</sub>
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| -CH<sub>2</sub>CH<sub>2</sub>COO-Phytyl
| -CH<sub>2</sub>CH<sub>2</sub>COO-Phytyl
Baris 64 ⟶ 63:
| -CH<sub>2</sub>CH<sub>2</sub>COO-Phytyl
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| Beungkeut C17-C18
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| Ayana di alam
| Sadaya
| Kalolobaan tutuwuhan
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| Sianobaktéri
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{|
| [[Image:chlorophyll_structure.png|thumb|left|200px|
|| [[Image:Chlorophyll c.png|thumb|left|200px|
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==Empirical evidence for the importance of chlorophyll in photosynthesis==
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.
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== Karakterisasi spéktral kloropil ==
Punclut serepan kloropil ''a'' aya dina panjang gelombang 665 nm jeung 430 nm, sedengkeun fluoresensna mencar dina 673 nm.
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