Plant Energy Transformations-Photosynthesis

This reduction requires a steady supply of electrons and protons (reducing equivalents) These reducing equivalents are provided by a second photosystem which oxidizes water to molecular oxygen. Photosystem II uses the energy from a second photon to reduce plastoquinone QH2.

what captures light energy during Photosynthesis? | …

Plants cells contain a number of structures that are involved in the process of photosynthesis:

Absorbing Light Energy for Photosynthesis 4:54

Sugars created in photosynthesis can be later converted by the plant to starch for storage, or it can be combined with other sugar molecules to form specialized carbohydrates such as , or it can be combined with other nutrients such as nitrogen, phosphorus, and sulfur, to build complex molecules such as and .

ATP is an energy storage molecule.

Photosystem II, upon absorbing light energy, transfers electrons to a membrane-localized electron transport chain, that pumps protons to generate an electrochemical gradient for chemiosmotic ATP synthesis. In cyanobacteria and chloroplasts, oxidized photosystem II splits (oxidizes) water molecules to regain electrons, and thereby generates oxygen gas.

Diagram of a plant cell involved in production of glucose from photosynthesis

700 How does a molecule “capture” the energy of light

The plant uses the stored chemical energy of ATP to make glucose from carbon dioxide. The plant then uses the glucose to make even larger compounds of cellulose and starch, which store energy.

in photosynthesis by capturing energy from light of wavelengths ..

A sequence of chemical reactions transfers the sun’s light energy into the chemical bonds that hold together special, energy-carrying molecules (the most common of which are called ).

photosynthesis Study Sets and Flashcards | Quizlet

As the plant binds molecules into larger and larger chains, it captures and stores energy in the bonds to be released later. The plant uses the largest molecules to construct cell walls as the plant grows larger.

Inside the  (a special organelle within a plant cell), a molecule of chlorophyll absorbs the light.

It is a pigment that captures light energy for photosynthesis: ..

Woah! I never really looked at photosynthesis/respiration in the way that you revealed to me. In the first intro video here, you discussed how cyanobacteria developed the method of accepting electrons from water, producing molecular oxygen. This led me to recall that carbohydrates are simply a storage molecule, which allows organisms to more-efficiently allocate energy over time.

Nucleus - containing DNA carrying the genetic code for enzymes and other proteins used in photosynthesis

In stage one of photosynthesis, energy in the form of light is ..

In plants and algae, photosynthesis takes place in organelles called chloroplasts. A typical plant cell contains about 10 to 100 chloroplasts. The chloroplast is enclosed by a membrane. This membrane is composed of a phospholipid inner membrane, a phospholipid outer membrane, and an intermembrane space between them. Within the membrane is an aqueous fluid called the stroma. The stroma contains stacks (grana) of thylakoids, which are the site of photosynthesis. The thylakoids are flattened disks, bounded by a membrane with a lumen or thylakoid space within it. The site of photosynthesis is the thylakoid membrane, which contains integral and peripheral membrane protein complexes, including the pigments that absorb light energy, which form the photosystems.

Cell membrane - allowing gas and water to pass in and out of the cell while controlling the passage of other molecules

blue and red light will drive photosynthesis.

Most of the energyreleased both by the burning of fossil fuels and by the metabolism ofliving cells is given off as heat and must be replaced by thecontinued input of radiant energy from the Sun.The principal organic products of plant photosynthesis arecarbohydrates.