How is light energy converted into chemical energy? | …

Photosynthesis in green plants harnesses the energy of sunlight toconvert carbon dioxide, water, and minerals into organic compoundsand gaseous oxygen.In addition to the green plants, photosynthetic organisms includecertain protists (such as euglenoids and diatoms), cyanophytes(blue-green algae), and various bacteria.

27/08/2007 · How does photosynthesis convert light energy into chemical energy

Heterotroph
Autotrophs make their own food
Heterotrophs don't make their own food
Use light energy from the sun to make their food
Obtain energy by consuming food
ATP
(Adenosine Tri-phosphate)
: The "T" stands for Tri phosphate
: The "D" stands for Di phosphate
Chemical potential energy is stored in an ATP molecule
When a phosphate group is removed from ATP, ATP is changed to ADP and energy is released, which can do cellular-level work
ATP is the basic energy source for all cells
Big picture: Glucose stores 90 times more energy than ATP...in a series of coupled reactions, the large amounts of energy in glucose can be harnessed to do cellular level work...such as building proteins
ATP can be used for the following activities in cells...
Active transport - Sodium/Potassium Pump
Movement - Motor proteins to move organelles within cells
Synthesis of proteins and nucleic acids
ex: plants
ex: animals and fungus
During ATP reaction coupling, the phosphate group briefly attaches to an intermediate molecule, which causes that intermediate molecule to perform a function
Nerve cell function: NA+/K+ Pump
Muscle Movement
Remember back to unit 2:

**Chemical Energy is released when the chemical bonds of the reactant molecules rearrange to form more stable product molecules
Sea Slugs???
You eat because you need a source of energy and matter (building materals)
Photosynthesis
Matter is needed for growth and repair
Photosynthesis: A "Lyrical" Overview
Science Music Videos: "Photosynthesis, the Light Reactions, Part 1: the Big Picture"
Science Music Videos: "Photosynthesis, The Light Reactions, Part 2: How non-cyclic Electron Flow makes ATP,V2"
Photosynthesis: Light Reactions pt.


The conversion of usable sunlight energy into chemical energy ..

In the light reactions, light energy is converted into the chemical energy of ATP, while water is broken down for its hydrogen atoms.

In the Calvin cycle, atmospheric carbon dioxide is incorporated into already existing organic carbon compounds, such as ribulose bisphosphate (RuBP). Using the ATP and NADPH produced by the light-dependent reactions, the resulting compounds are then reduced and removed to form further carbohydrates such as glucose.The general equation for photosynthesis is therefore:Photosynthetic membranes and organellesIn plants and algae, photosynthesis takes place in organelles called chloroplasts.


which can then be used to convert the light energy into chemical ..

Photosysnthesis actually takes place as two different sets of reactions. The “light reaction” requires light energy. Chlorophyll is required to convert light energy into chemical energy. This set of reactions produces two chemicals: ATP and NAHPH. In the “dark reaction” carbon dioxide and water are converted into carbohydrate. The dark reaction needs chemical energy which is supplied by ATP and NADPH.

The thylakoids convert light energy into the chemical energy …

The dark reaction requires energy from both NADPH and ATP. In this part of photosynthesis carbon dioxide is fixed. Energy from NADPH and ATP is used to convert glucose (a six carbon molecule) into ribulose diphosphate (a five carbon sugar molecule). Ribulose diphosphate can combine with carbon dioxide eventually forming glucose.

The absorption of light energy and its conversion into chemical ..

ATP is involved in other chemical reactions, such as respiration, which will be covered in a later program.




Photosynthesis converts moving radiant energy into stored chemical bond energy.

Light energy is crucial to the photosynthesis ..

Carbon dioxide and water are inorganic chemicals, whereas glucose is an organic chemical. Plants need energy to convert carbon dioxide and water into glucose; this energy comes from sunlight. Plants can also use artificial light providing that it contains the right frequencies (). Light energy is trapped by a green chemical called chlorophyll. In photosynthesis, light energy is converted into chemical energy. When animals and plants respire, the chemical energy in glucose can be converted into other forms of e.g. kinetic energy.