Assignments got your hair on fire?

Douse the flames with our full-range writing service!

Experienced academic writing professionals are at your fingertips. Use this handy tool to get a price estimate for your project.

The word photosynthesis means putting together with light.



Carbon dioxide is trapped and reduced to carbohydrate in the
light-independent reactions of photosynthesis, using ATP and reduced
NADP from the light-dependent reactions.


During these reactions the photosynthetic pigments of the chloroplast
absorb light energy and give out excited electrons used to synthesise
ATP.

 [IMAGE] There are two types of photosynthetic pigments; primary and accessory pigments.

Pigments for Photosynthesis - HyperPhysics Concepts

The accessory pigments include other forms of chlorophyll a, chlorophyll b and the caratenoids.

Other bacteria use sunlight for different chemical purposes. Splitting water — as plants do — requires a lot of input energy, so some organisms "make a living" off less demanding reactions. For example, green sulfur bacteria use hydrogen sulfide as an "electron donor" in place of water. This process and others like it are referred to as anoxygenic photosynthesis because no oxygen is produced. The associated pigments are called bacteriochlorophylls.

Plants and other photosynthetic organisms use special molecules for absorbing light. These pigments have a distinctive color, or spectrum, that is known to leave an imprint on the light reflected off our planet's surface. A new database catalogues the diverse palette of light-absorbing biological molecules on Earth in order to better predict what the photosynthetic signature might look like on other planets.

The Major and Accessory Pigments in Photosynthesis

The Biological Pigment Database contains spectral information for chlorophylls and bacteriochlorophylls, as well as for other accessory pigments that absorb light energy and transfer it to the main chlorophyll pigments responsible for photosynthesis. In addition, it includes biological sunscreen compounds that photosynthetic organisms produce to protect against excessive or harmful radiation, and carotenoids that serve the roles of both anti-oxidants and light harvesting pigments.

The light used in photosynthesis is absorbed by a green pigment called chlorophyll.

Imagine a leaf as a solar collector crammed full of photosynthetic cells where the raw materials of photosynthesis (water and carbon dioxide) enter the cells of the leaf, and the products of photosynthesis (sugar and oxygen) leave the leaf.

Versatile Services that Make Studying Easy
We write effective, thought-provoking essays from scratch
We create erudite academic research papers
We champion seasoned experts for dissertations
We make it our business to construct successful business papers
What if the quality isn’t so great?
Our writers are sourced from experts, and complete an obstacle course of testing to join our brigade. Ours is a top service in the English-speaking world.
How do I know the professor won’t find out?
Everything is confidential. So you know your student paper is wholly yours, we use CopyScape and WriteCheck to guarantee originality (never TurnItIn, which professors patrol).
What if it doesn’t meet my expectations?
Unchanged instructions afford you 10 days to request edits after our agreed due date. With 94% satisfaction, we work until your hair is comfortably cool.
Clients enjoy the breezy experience of working with us
Click to learn our proven method

Role of Photosynthetic Pigments - Oronsay


Light and photosynthetic pigments (article) | Khan Academy

Chlorophylla-a is the primary for in plants. Its structure is shown at left. It has the composition C55H72O5N4Mg. It exhibits a grass-green visual color and absorption peaks at 430nm and 662nm. It occurs in all photosynthetic organisms except photosynthetic bacteria.

Photosynthesis in plants occurs ..

Life on our planet has adapted to the light from our Sun. Plant photosynthetic pigments, for example, use the Sun's abundant visible light — most strongly absorbing in the blue and red part of the spectrum, which is why they appear green in reflected light.

Chlorophyll and Accessory Pigments

But plants aren't the only organisms that use sunlight on Earth. Kiang studies various photosynthetic bacteria that have an entirely different set of pigments for absorbing light. She compares the spectra from these pigments to try to understand what mechanisms drive the evolution of the light harvesting ability.

Role of pigments on algal communities and photosynthesis

What this tells us is that photosynthesis is not a one-size-fits-all solution, and the pigments used on a different planet will likely be adapted to local conditions. To help imagine what these alien pigments might be, Kiang has started the Biological Pigments Database. This contributes a biological component to the NASA Astrobiology Institute Virtual Planetary Laboratory’s Spectral Database, which brings together stellar radiation spectra, molecular line lists for atmospheric radiative transfer, and now biological pigments.

photosynthesis notes - Biology Junction

"I want [the pigment database] to be a community resource that can help in modeling the potential biosignatures from other planets," Kiang says.

Chemistry for Biologists: Photosynthesis

The most familiar pigment is chlorophyll. There's actually a handful of different kinds of chlorophyll, but the most essential one is chlorophyll a, used by plants, algae, and cyanobacteria. Chlorophyll a absorbs most strongly in the violet-blue and orange-red part of the spectrum, which is a natural choice for plants growing in direct sunlight.

Georgia Virtual Learning > Home



Being an evergreen plant it has the advantage of being able to
photosynthesis during the winter months whereas deciduous trees are
dormant.

This tutorial introduces mitochondria

Plants and algae use the energy absorbed by chlorophyll a to split water molecules. This splitting allows electrons from the water to be "donated" towards the reduction of carbon dioxide into carbohydrates (i.e. sugars). The byproduct of these reactions is oxygen, which is why the process is called oxygenic photosynthesis.

89%
of clients claim significantly improved grades thanks to our work.
98%
of students agree they have more time for other things thanks to us.
Clients Speak
“I didn’t expect I’d be thanking you for actually improving my own writing, but I am. You’re like a second professor!”