Water and sunlight
check out this website on photosynthesis
http://www.authorstream.com/presentation/Callia-36221-Photosynthesis-Equation-happen-Chloroplasts-Two-Parts-Light-Depende-as-Entertainment-ppt-powerpoint/
In photosynthesis, the reactants of the light-dependent reaction are water and light energy, which are used to produce oxygen, ATP, and NADPH. The products of the light-independent reaction (Calvin cycle) are ATP, NADPH, and carbon dioxide, which are used to produce glucose through a series of enzymatic reactions. The light-dependent reaction occurs in the thylakoid membranes of chloroplasts, while the light-independent reaction takes place in the stroma of the chloroplast.
The reactants of light-dependent reactions in photosynthesis are H20 (water), ADP, and NADP+.The products of light-dependent pathways of photosynthesis are Oxygen, ATP, and NADPH.The reactants of light-independent reactions are ATP, NADPH, and Carbon Dioxide.The main purpose of the light independent reaction is to produce glucose.
The reactants of light-dependent reactions in photosynthesis are H20 (water), ADP, and NADP+.The products of light-dependent pathways of photosynthesis are Oxygen, ATP, and NADPH.The reactants of light-independent reactions are ATP, NADPH, and Carbon Dioxide.The main purpose of the light independent reaction is to produce glucose.
My friends, the only 2 things you need are light and water. Sorry, though. If you dunk a lit light bulb in water, you will not get a light-dependent reaction. You will get electrocuted.... so don't try this one at home!
rate of reaction depends on the amount of reactants
The reversible reactions are more dependent.
The equilibrium constant is independent of wavelength because it represents the balance of reactants and products in a chemical reaction, which is determined by the thermodynamics of the reaction and not by the specific wavelength of light that may be used to drive the reaction. The equilibrium constant is dependent on temperature, pressure, and concentrations of reactants and products, but not on the wavelength of light.
The energy is dependent on the reactants.
Photochemical reactions often involve the absorption of photons to initiate the reaction, rather than the concentration of reactants. This means that the rate of the reaction is not dependent on the concentration of reactants, leading to a zero order relationship between reactant concentration and reaction rate.
The two reactions of photosynthesis are connected by two substances: ATP and NADPH. These are produced by the light dependent reaction and are used by the light independent reaction. ATP is produced from ADP and Pi (phosphate): ADP + Pi ---> ATP This reaction requires energy to make it work, and this energy comes from light absorbed in the light dependent reaction. NADPH is produced from NADP+ and H: NADP+ + H ---> NADPH This reaction also requires energy, which is obtained from light in the light dependent reaction. The ATP and the NADPH are used in the light dependent reaction to provide energy and a source of H to convert CO2 to CH2O (carbohydrate). The products of the reactions (ADP, Pi, NADP+) are recycled in the light dependent reaction to produce more ATP and NADPH. For a summary diagram see: http://www.griffined.com/imagesphotosynthesis-overview.gif
The rate of a chemical reaction that is most dependent on the concentration of the reactants is known as a first-order reaction. In a first-order reaction, the rate of the reaction is directly proportional to the concentration of one reactant. Therefore, changes in the concentration of the reactant directly impact the rate at which the reaction proceeds.
The light dependent reaction, of course.