Introduction Photosynthesis is a process in which plants and other organisms use the energy of sunlight to convert water and carbon dioxide into oxygen and high-energy. In addition to water and carbon dioxide photosynthesis requires chlorophyll, a molecule found in chloroplasts. Photosynthesis requires chlorophyll because the chlorophyll converts light into chemical energy producing adenosine triphosphate. Two parts of photosynthesis are the light-dependent reactions and the Calvin cycle (light-independent reactions). The Calvin Cycle converts ATP to ADP + 3 phosphate groups and NADPH to NADP+. Light-dependent reactions convert light energy into chemical energy, producing ATP and NADPH. Light- dependent reactions occur in the thylakoid and …show more content…
Next, two small drops of dish detergent were added to the syringe. By adding the detergent, it will break down the leaf's waxy coating, allowing the sodium bicarbonate to provide the leaf with CO2. Third, approximately 20 leaf disk were hole punched, putting them into the syringe as they were hole punched. As this was done the leaf disk fell to the bottom of the syringe. Next, 20 mL of the sodium bicarbonate and the water mixture were inserted into the syringe (the disk were floating). Next, the plunger was re-inserted. The syringe was held upside down (sealing the tip with index finger). Then, the syringe was slightly pulled back and forth letting out all oxygen, at this point bubbles were coming out of the tip of the syringe. This method was repeated 6-7 times making sure that bubbles come out every time. Every Time the method was done some of the leaf disks sunk to the bottom, by the 7th time all of the leaf disk sunk to the bottom. Next, after all the disk sunk completely, the solution was transferred evenly ( 10 disks in each cup). One cup was placed under a light source and one cup covered by a paper towel. Once the cup was placed under the light source a timer was turned on, set to one minute. The two cups were observed after every minute for 15
2. Drop a gummy bear into each of your prepared beaker or cup and place the beaker or cup
I added ½ tablespoon of baking soda to 4 cups of water. I added a small drop of liquid soap to the water and stirred to mix. I used the end of a straw and cut out 20 circles of spinach leaves. I pulled the plunger completely out of the syringe and put the leaf circles into the syringe. Next I pushed the plunger back in. I used the syringe to suck up the baking soda water until the syringe was about ¼ full of liquid. I placed my finger over the end of the syringe and pulled back on the plunger as far as I could without pulling the plunger out. I repeated this step three times. All the leaf circles sunk to the bottom of the liquid. I placed the spinach into a clear glass with about 2 inches of baking soda solution. I blocked out all light. I set the lamp with a compact florescent light bulb. I placed the glass in front of the lamp. I counted the number of circles that floated after each minute for 20 minutes (positive control). I created a negative control by not placing compact florescent light bulb and not placing the glass in front of the lamp. I counted the number of circles that are floating. I repeated the experiment with fresh circles and used regular water plus soap for all steps instead of baking soda and soa...
An Analysis and Evaluation of Data from Photosynthesis Experiments Graph analysis This is my analysis for the investigation in to the affect of light intensity on the rate of photosynthesis to the Canadian pondweed, elodea. In the results the pattern is that when the light intensity is higher the readings are generally higher. On the graph the less the light intensity the lower the gradient of the curve. the equation for the photosynthesis process is; CO2 + 2H2O + Light Energy = =
· The beetroot piece is then placed into a tube of 5 cm of distilled
= = = [IMAGE][IMAGE]6CO2 + 6h20 light energy and chlorophyll C6H1206 + 6O2 Carbon dioxide + water converted into glucose and oxygen. Theory of photosynthesis Photosynthesis is a chemical reaction, which uses the energy from sunlight to convert carbon dioxide and water to oxygen.
To make the test fair I will use the same amount of water and the leaf
Methods: First open up the Eldoncard package and fill out the general information. Fill a cup with purified water and then use the pipet provided to place one drop of water onto each of the colored reagent spots on the Eldoncard. At this point wash your hands and with soap and water. Now get the automatic lancet and twist the colored cap and gently pull off straight forward. Use the cleaning
I prepared two large test tubes, each should have an inch of KOH pellets on the bottom of the tube. Next, a cotton ball is placed in each of the two test tubes above the KOH to plug the tube. Now one tube is filled to the top with peas, the peas are then removed and weighed to the nearest.1 grams, this is the experimental tube. The control tube is filled with plastic balls to the same height as the experimental tube. Next, a rubber stopper with attached capillary tubing is inserted in each test tube.
Prepare casts of the leaves surfaces by painting the adaxial (top surface) of one leaf and the abaxial (bottom surface) of the other leaf with clear nail polish. Allow the nail polish to dry for approximately 10 minutes. While the nail polish is drying, label microscope slides as either adaxial (top of the leaf) or abaxial (bottom of the leaf). Cut a piece of sellotape approximately 1.5 cm in length. Fold the tape over on itself leaving 0.5 cm of sticky surface exposed.
“Photosynthesis (literally, “synthesis from light”) is a metabolic process by which the energy of sunlight is captured and used to convert carbon dioxide (CO2) and water (H2O) into carbohydrates (which is represented as a six-carbon sugar, C6H12O6) and oxygen gas (O2)” (BioPortal, n.d., p. 190).
An Experiment to Investigate the Effect of Light Intensity on the Rate of Photosynthesis. Introduction Photosynthetics take place in the chloroplasts of green plant cells. It can produce simple sugars using carbon dioxide and water causing the release of sugar and oxygen. The chemical equation of photosynthesis is: [ IMAGE ] 6CO 2 + 6H20 C 6 H12 O 6 + 6O2 It has been proven many times that plants need light to be able to photosynthesize, so you can say that without light the plant would neither photosynthesize nor survive.
Introduction Photosynthesis is a process used every day by plants, algae, and some bacteria to harness light energy and turn it into chemical energy. Chloroplasts play a large role in the process, chloroplasts are organelles much like mitochondria that contain a double membrane and third inner membrane called the thylakoid membrane. It is on the thylakoid membrane where the process takes place. Chloroplasts contain their own DNA which is a major contributor to the stability of this organelle. Without this essential organelle the photosynthetic process would not be possible.
Photosynthesis is a process in which plants and other organisms convert the light energy from the sun or any other source into chemical energy that can be released to fuel an organism’s activities. During this reaction, carbon dioxide and water are converted into glucose and oxygen. This process takes place in leaf cells which contain chloroplasts and the reaction requires light energy from the sun, which is absorbed by a green substance called chlorophyll. The plants absorb the water through their roots from the earth and carbon dioxide through their leaves.
According to scientists, photosynthesis is “the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.” ("pho•to•syn•the•sis,")
Photosynthesis is a cycle plants go through converting light into chemical energy for use later. Photosynthesis starts in the chloroplasts, they capture chlorophyll, an important chemical needed for photosynthesis. Chloroplasts also take water, carbon dioxide, oxygen and glucose. The chlorophyll is taken to the stroma, where carbon dioxide and water mix together to make