How carbon dioxide can affect the rate of photosynthesis

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.

• Design a scientific experiment to determine the effect of the variable on the rate of photosynthesis for the organism

-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.

mL cylinder to the beaker on the stir plate and empty it into the beaker. Place the pH probe in the beaker and record the pH in the data table. Drag the beaker to the red disposal bucket. Double-click the bottle of NaHCO3 to move it to the Stockroom counter. Repeat steps 5 and 6 for KNO3.

The purpose of this lab is to observe the effect of white, green, and dark light on a photosynthetic plant using a volumeter and followed by the calculation of the net oxygen production using different wavelengths color of white and green light, and also the calculation of oxygen consumption under a dark environment, and finally the calculation of the gross oxygen production.

First, we filled the beaker with 500 ML of water then dropped 10 drops of the indicator in the beaker. Then we dropped 10 drops of vinegar in the beaker until it turned red. Once this was done we took crushed up Tums and a little bit of water in it mixed

For all living organisms including plants, respiration is the process of converting chemical energy into a usable form of energy (Biol 171L Lab 7). Even if an organism does not have an energy source, they will keep respiring. For autotrophic plants, the process of obtaining energy is called photosynthesis. It harvests solar energy, carbon dioxide, and water to form a usable form of energy (Tanaka 2009). The factors that go into this process includes the pigment the plant possesses, and the intensity, wavelength, and direction of the light. Plants that contain the pigment chlorophyll-a are the ones we see as the leaves of common trees, or grass.

* By using the dropper and measuring cylinder, 7 ml sodium carbonate solution was added to the test tube

Place a burette on the conical flask and then hold it by using a clamp stand.

Water can be kept a constant by keeping the same amount of water in the beaker. Temperature- Enzymes are used in photosynthesis and the respiration of the plant. Therefore, increasing the temperature will increase enzyme reaction and the photosynthetic rate until a certain point is reached when the enzymes denature. The temperature can be kept somewhat a constant by performing the experiment in one session, when the air temperature shouldn't change enough to affect water temperature. A transparent glass block will also be placed in front of the lamp to retain some of the heat from the lamp.

The intention of this experiment is to determine the effects of pH on the rate of photosynthesis in living leaves. Photosynthesis is a process by which plants convert light energy captured from the sun into chemical energy which they use to perform various plant functions. During the photosynthesis process, light, carbon dioxide, and water react to produce products: sugar and oxygen. The equation for photosynthesis is:

4.Measure 35mL of warm water and add them into each of the 4 test tubes at about roughly the same time. It is essential that the water is warm. Do not seal the test tube.

Place the Elodea in the water, start the stopwatch and measure and record the amount of oxygen bubbles produced by the Elodea over a 5-minute period.

I hypothesized that the amount of carbon dioxide will remain the same if there is no light as plants need light in order to photosynthesize. On the other hand, there will be a decrease in carbon dioxide when the bottle is in the light as as the leaf inside the bottle photosynthesize and convert the carbon dioxide into oxygen. My hypothesis that carbon dioxide will remain the same wen the bottle is in dark was proved incorrect as my data shows an increase of carbon dioxide, there was 910 ppm originally and by the 10th time there was 972 ppm disproving my claim that the level of carbon dioxide will stay the same. However, my claim that there will be a decrease in carbon dioxide when the bottle is in the light

Sodium hydrogen carbonate was added to the solution until it becomes neutral. Ph paper was used for this test to determine its ph value.