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Plant Pigments and Photosynthesis Statement of the Problem: What question(s) are you trying to answer

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The researchers speculate that chlorophyll- and retinal-based organisms coexisted for a time. “You can imagine a situation where photosynthesis is going on just beneath a layer of purple membrane-containing organisms,” DasSarma told LiveScience.

The earliest life on Earth might have been just as purple as it is green today, a scientist claims

photosynthesis) are multi factorial because of the particular composition of enzymes as protein complexes, where individual proteins are coded for by different genes.

NEET Biology: Medical Entrance Biology Questions and …

Some plants have abandoned photosynthesis and instead tap into the resources held in fungal growths underground. The plants live most of their lives underground — they don’t need to see the sun to grow, after all — and only emerge to flower. This is when Suetsugu’s team found it.

While all these organelles are found in animal cells, plant cells in addition contain a central vacuole that controls pressure to stabilize the cell and chloroplasts, the site of photosynthesis or light depended biosynthesis of sugars (carbohydrates).

Magic Leap - MIT Technology Review

DasSarma thinks it is because chlorophyll appeared after another light-sensitive molecule called retinal was already present on early Earth. Retinal, today found in the plum-colored membrane of a photosynthetic microbe called halobacteria, absorbs green light and reflects back red and violet light, the combination of which appears purple.

Chlorophyll, the main photosynthetic pigment of plants, absorbs ">mainly blue and red wavelengths from the sun and reflects green ones, and it is this reflected light that gives plants their leafy color. This fact puzzles some biologists because the sun transmits most of its energy in the green part of the visible spectrum.

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