Chlorophyll Definition and Role in Photosynthesis - …

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Chloroplasts - containing chlorophyll and enzymes needed for reactions in photosynthesis.

The word "chlorophyll" comes from the Greek words chloros, which means "green", and phyllon, which means "leaf". Joseph Bienaimé Caventou and Pierre Joseph Pelletier first isolated and named the molecule in 1817.


Chlorophyll: a green pigment within the chloroplast.

Plants and other photosynthetic organisms use chlorophyll to absorb light (usually solar energy) and convert it into chemical energy.

Other researchers are more cautious about the findings. , a molecular biologist at the University of California, Davis, points out that earlier research suggests some oxygen-producing cyanobacteria can harvest energy from near-infrared light using chlorophyll d—one of the four known varieties of chlorophyll, which also include chlorophylls a, b and c. But the new paper still interests Lagarias: "It's an exciting potential discovery, and if it's true it provides a second example of a red-shifted-chlorophyll-containing organism," he says. "We don't know for sure that it's used for photosynthesis, but we know it's absorbing light and it's likely to be involved in photosynthetic apparatus somehow. It could be a bona fide new form of chlorophyll that exists in something living."


Plants make their own food thru the process of photosynthesis

The forms of chlorophyll have different side chains and chemical bonds, but all are characterized by a chlorin pigment ring containing a magnesium ion at its center.

NOVA - Official Website | Illuminating Photosynthesis

Current understanding is that the earliest photosynthetic organisms were aquatic bacteria, some of which are still around today. One of these, halobacterium halobium, grows in extremely salty water. It makes use of the bacteriorhodopsin pigment. The chlorophyll system developed to use the available light, as if it developed in strata below the purple bacteria and had to use what it could get.

Biology of Plants: Making Food - MBGnet

Chlorophyll is the name given to a group of green pigment molecules found in plants, algae, and cyanobacteria. The two most common types of chlorophyll are chlorophyll a, which is a blue-black ester with the chemical formula C55H72MgN4O5, and chlorophyll b, which is a dark green ester with the formula C55H70MgN4O6. Other forms of chlorophyll include chlorophyll c1, c2, d, and f.

Chlorophyll fluorescence - Wikipedia

Phytoplankton live in the surface waters of the ocean, where they soak up sunlight and carbon dioxide and convert them into food. In addition to light, the plants also need nutrients like iron and nitrogen, which come from run-off in rivers, wind-blown dust, or from the ocean floor, carried to the surface on upwelling currents. Not surprisingly, high chlorophyll concentrations line the coasts where such nutrients wash into the ocean from the land. Upwelling is also more common in coastal regions, where the temperature difference between land and ocean fuels the winds that stir the ocean surface and drive upwelling.

Photosynthesis movie - North Dakota State University

Chlorophyll is an essential pigment molecule , the chemical process plants use to absorb and use energy from light. It's also used as a food coloring (E140) and as a deodorizing agent. As a food coloring, chlorophyll is used to add a green color to pasta, the spirit absinthe, and other foods and beverages. As a waxy organic compound, chlorophyll is not soluble in water. It is mixed with a small amount of oil when it's used in food.