Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download NOTES PHOTOSYNTHESIS The complete, balanced equation for
Transcript
Name ___________________________________________________ Date ___________ Period _______ TEXTBOOK READING PP. 327-336 Notes Photosynthesis The complete, balanced equation for photosynthesis is . . . Carbon Dioxide Water Light energy Chemical energy Sugar (Glucose) Oxygen Energy Plants get their energy from the Sun. Energy can be transferred from one form to another. During photosynthesis, light energy is converted into chemical energy. Light energy The two main colors that plants use for photosynthesis are the blue and red wavelengths Chloroplast The organelle in the plant cell where photosynthesis occurs. They contain a green pigment, chlorophyll, that absorbs light. Plants appear green because green light is reflected. Two Phases of Photosynthesis Light-Dependent Reactions & Dark-Independent Reactions Light-Dependent Reactions – the first phase of photosynthesis 1st – light energy hits a chlorophyll molecule in a chloroplast. 2nd – electrons in chlorophyll become excited 3rd – the light energy is converted into chemical energy, ATP 4th – the water, which is absorbed through the roots, is split into oxygen and hydrogen. The by-product of this reaction is oxygen. Dark-Independent Reactions – the second phase of photosynthesis The light-independent reactions are referred to as the Calvin Cycle. In a series of reactions, ATP and hydrogen produced during the lightdependent reaction are added to carbon dioxide to make sugars. The sugar produced can be consumed by the plant as energy, stored by the plant as starch, or used to form lipids, proteins and other molecules. Although the light-independent reactions do not require light they occur at the same time as the light-dependent reactions.
