Uses And Uses Of Photosynthesis

Measuring the Rate Oxygen Production using an Oxygen Electrode Chamber in Photosynthesis of Spinacia oleracea with Varying Light Intensities

Have you ever really wondered how different variables can affect how plants go through photosynthesis? Well, in this experiment, the purpose was to see how various environmental conditions can affect the overall photosynthetic capacity of a specific plant. The factors, light, darkness, cold, and heat were applied to see how the different components would affect the photosynthesis on spinach plants. Each group was given a different factor to test. Out group was given the light factor. The hypothesis for this experiment is that when adding light as a factor, the light will affect the overall plant photosynthesis.

The Cellular respiration and photosynthesis form a critical cycle of energy and matter that supports the continued existence of life on earth. Describe the stages of cellular respiration and photosynthesis and their interaction and interdependence including raw materials, products, and amount of ATP or glucose produced during each phase. How is each linked to specific organelles within the eukaryotic cell? What has been the importance and significance of these processes and their cyclic interaction to the evolution and diversity of life?

To performed the experiment, a volumeter was set up to measure the net oxygen production under white light, then a second step was followed to measure oxygen consumption under dark conditions (oxygen production only happens in the presence of light and oxygen consumption in the presence of dark light) and finally, a third step consisted of recording the measure of the net oxygen production under the presence of green light.

The purpose of this experiment was to investigate the effects of light intensity on the rate of photosynthesis in a Moneywort plant. By observing the plant in distilled water mixed with sodium bicarbonate, different light bulbs were targeted onto the plant. The measurement of the amount of bubbles present on the plant during the trial of the experiment enabled us to identify the comparisons between the activity of the light and the process of photosynthesis.

-Measuring the pH of a solution (such as in the lab we had) could also help determine the rate of photosynthesis. You would need a much more specific pH meter, but generally, if pH goes down, the level of CO2 is higher, meaning more cellular respiration. Higher pH means there’s less CO2, so more photosynthesis.

The rate of photosynthesis is affected by environmental factors like light intensity, light wavelength, and temperature. This experiment will test the

Think fast. Think green. What comes to mind when you hear the word photosynthesis? Take a short quiz to see how much you know!

Abstract: The purpose of this lab is to separate and identify pigments and other molecules within plant cells by a process called chromatography. We will also be measuring the rate of photosynthesis in isolated chloroplasts. Beta carotene, the most abundant carotene in plants, is carried along near the solvent front because it is very soluble in the solvent being used and because it forms no hydrogen bonds with cellulose. Xanthophyll is found further from the solvent font because it is less soluble in the solvent and has been slowed down by hydrogen bonding to the cellulose. Chlorophylls contain oxygen and nitrogen and are bound more tightly to the paper than the other pigments.

The initial experiment was a success. As our treatment group spent more and more time under the lights, the absorbance rate continues to decrease toward zero. Once our 30 minutes were up, the absorbance rate in each tube was significantly lower than at the start of our experiment. In contrast the two control groups did significantly lower the absorbance. Each control lacked one of the vital aspects of photosynthesis, one being light, and the other being chloroplast. Neither of the control groups (Control 1 or 2) showed any signs of photosynthesis. Control 1 was exposed to light, but contained no photosynthetic organelles thus the absorbance throughout the 30 minutes varied minimally, mostly staying stagnant. Control two which contained chloroplast but was not exposed to any light failed to lower the absorbance at all and in fact increased the absorbance over the 30 minutes. However, the treatment group contained both and ultimately performed photosynthesis as we expect therefore, confirming our assumption that chloroplast were the organelles required for photosynthesis in plants and that light is required to perform said photosynthesis. The treatment group, containing both the chloroplast and being exposed to light provided evidence that photosynthesis was taking place as the absorbance lowered at each 10-minute interval. Having a less absorbance would be desired because as DCIP became reduced we would expect the solution to become more and more clear, thus less

Question Do green or reddish-purple lettuce leaves photosynthesize at a higher rate under red light? Hypothesis Green lettuce leaves will photosynthesize at a faster rate than reddish-purple lettuce leaves when exposed to red light because reddish-purple lettuce leaves reflect red light and will thus have fewer photons to excite light receptors and begin photosynthesis. Materials: Baking soda Diluted soap solution Plastic syringes without needle Green lettuce leaves Reddish-purple leaves Hole punch 4 small beakers

Photosynthesis occurs in the palisade mesophyll of plant leaves. During photosynthesis, carbon dioxide is broken up into 6 carbon for the sugar molecule and 12 oxygen. In this lab, I determined the rate of photosynthesis in spinach

These are used to measure the amount of O2 that was produced in the chamber. Also needed are five different colored lights. The colors used in this experiment were blue, green, orange, red and white. Each light produces a different wavelength and thus a different rate of O2 production. The plant that was tested is called Elodea; this plant should be cut to 10 cm and placed into the respiration chamber and then covered with tin foil and sealed with the O2 sensor.

For lab 12, it is hypothesized that chlorophylls a and b are present in a plant leaf and contribute to the starch production in photosynthesis. Also, products of photosynthesis will be present in leaf tissue exposed to red and blue light wavelengths for several days, but a decreased presence in leaf tissue exposed to green and black light wavelengths. In lab 13, it is expected that since chlorophylls a and b are more polar and smaller molecules than the anthyocyanins and carotenoids, they will travel higher up the chromatography paper than the other pigments.

In this lab, varying wavelengths were used to test how light affects photosynthesis and respiration as a whole. The absorbance of lights from 380 nm to 720 nm of chlorophyll pigment from the Elodea sample