Photosynthesis -. Part I: The Sun and Light. Not all of the light from the Sun makes it to the surface of the Earth. Even the light that does make it here is reflected and spread out. The little light that does make it here is enough for the plants of the world to survive and go through the process of photosynthesis. Light is actually energy, electromagnetic energy to be exact. When that energy gets to a green plant, all sorts of reactions can take place to store energy in the form of sugar molecules.
For your GCSE Science exams, you need to be able to compare the differences between different types of cells.1  Education. 2  Standard YouTube License.or your GCSE Science exams, you need to be able to compare the differences between different types of cells. 1  Education.
GCSE stands for General Certificate of Secondary Education. GCSE examinations are taken by most pupils at the end of compulsory school education (year 11)in England, Wales and Northern Ireland.GCSE provides a uniform framework for assessment, with all candidates in all subjects graded from A* to G (with U being the result given to those whose papers are ungraded).epending on their expected grades, pupils in certain subjects will be entered for the higher or the foundation tier GCSE exams. Pupils expected to achieve grades A to D take the higher tier and can achieve any grade; pupils taking the foundation tier can only achieve grade C or below.