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Because oxygen is a product of photosynthesis and the Elodea plant is submerged in water, the oxygen is released in bubbles that rise to the surface of the water in the beaker.In this experiment, the rate of photosynthesis for each degree of light intensity can be measured by counting the number of bubbles released every 30 seconds for five minutes at each distance.
This is the process of making glucose—which cells use as an energy source—from sunlight energy, water and carbon dioxide.
Only plant cells can do this, and the special organelle in the plant cells that can do through this process is called a chloroplast. This starts when photons from sunlight strike the leaf, excite the chlorophyll (the light absorbing pigment that drives photosynthesis) and activate electrons.
• Design a scientific experiment to determine the effect of the variable on the rate of photosynthesis for the organism • Explain how you would measure the rate of photosynthesis in your experiment • Describe the results you would expect. The rate of photosynthesis is affected by environmental factors like light intensity, light wavelength, and temperature.
This experiment will test the The rate of photosynthesis can be determined different ways.
Of course, you will need to know the steps and names of the intermediate parts of the cycle, but as I said before, that will be much easier once you feel very comfortable with the general process.
The overall, final photosynthesis reaction looks like this: Now that we have created glucose, in the next Biology Tutor post we will go through the festive process of breaking it down.
Background: Photosynthesis is the process by which photoautotrophs convert photons of kinetic light energy into potential chemical energy (food) by synthesizing glucose from water and carbon dioxide and releasing oxygen as a waste product.
Sunlight radiation travels in waves but acts like particles of energy called photons.
These are very important processes and any student studying for the AP exam, the SAT Biology Subject test, or any biology class needs to be comfortable with the material.
However, there is so much information, so much detail, and so many terms, reactions, and steps, that students often lose track of the big overall picture.