Then measure the distance of each pigment starting at the bottom of the pigment origin to the bottom of the separated pigment band. In Exercise 4B: Photosynthesis/ The Light Reaction, chloroplasts are extracted from spinach leaves and incubated with DPIP in the presence of light. The spectrophotometer should be warmed up and set the wavelength to 605 nm. An incubation area should be set up, that includes a light, water flask, and test tube rack. We were provided with two beakers, one containing a solution of boiled chloroplasts and
Bromthymol Blues Lab Introduction In this lab our group will demonstrate if carbon dioxide (CO2) is present during photosynthesis and cellular respiration. We will attempt this experiment by using an indicator called bromthymol blue. This indicator will turn yellow if CO2 is present during cellular respiration and during photosynthesis the indicator will turn from yellow to blue if the CO2 has been absorbed by the plant. II. Purpose To demonstrate that CO2 is used during photosynthesis.
Photosynthesis is broken down into two separate stages, the light-dependent reactions and light-independent reactions. In the light-dependent reaction, the chloroplast traps light energy from the sun and it is converted into ATP and NADPH energy. In the light-independent reaction, NADPH delivers the hydrogen and carbon dioxide atoms that help form glucose, and ATP donates energy to areas where glucose is put together from carbon. This process occurs in chlorophyll bearing cells. Chlorophyll is an amazing chemical that is the essential ingredient in photosynthesis.
25. Where in plant cells are the energy-absorbing molecules for photosynthesis located? 26. The part of cellular respiration that needs oxygen takes place inside the 27. Write the chemical formula for photosynthesis.
Based on your data, what effect do you predict coal mining has on the environment? Answer = 4. What can be done to prevent mine drainage from damaging the ecosystem? Utilize at least one scholarly resource to support your suggestions. Answer = Experiment 2: Solar Energy Table 2: Solar Energy Experiment Results | Environmental Descriptor/Variable | Observations(Each should be compared against direct subnlight) | Weather of the Day | | Motor speed in direct sunlight | | Motor speed at 45 degree angle | | Motor speed under reflectors | | Motor speed with 25% shaded | | Motor speed with 50% shaded | | Motor speed with 75% shaded | | Motor speed under red filtration | | Motor speed under blue filtration | | Motor speed under green filtration | | Motor speed under yellow filtration | | Post-Lab Questions 1.
The release button on the lighter is pressed and held until approximately 90 ml of water is displaced from the cylinder; the level of the water in the cylinder should be level with the water in the trough. The temperature of the water is taken and the lighter is reweighed. All data is recorded and then this experiment is repeated three times, using all the same material. Data and Observations: As the water is displaced from the cylinder, bubbles continuously floated to the end of the cylinder as the water level went down. See Table 1 for all the recorded results.
This experiment will look at how soda, juice, and water will affect the growth of plants. Diet sodas do not kill plants like regular sodas do. To keep data on how tall the plants grow each day I have been putting the heights of each plant in centimeters on a chart. I check the heights each day and water the plants with their given amount of liquids in the procedures. The liquids I am using are diet sierra mist, tap water and orange juice.
Biology 4th 1/19/2015 Photosynthesis Lab-Report Purpose- The purpose of this lab was to test whether or not changing a condition would affect the rate of photosynthesis. Hypothesis- If we add baking soda to create a bicarbonate solution and place deoxidized leafs in the solution with a controlled light source, then the rate of photosynthesis will increase because of the superfluous amount of CO2. Procedure- To begin, first grab a straw and some leaves and start making twenty disks out of the leaves. While one partner is making the disks, have another partner prepare 300mL of 0.2% bicarbonate solution and fill one of the small plastic cups with the solution and fill the other plastic cup with water. Then, using the pipette fill drop one drop of dish soap into both cups to act as a surfactant or “wetting agent”.
Put on a safety goggles. Use a thermometer to measure the initial temperature of the water in the soft drink can. Measure the initial mass on a mass scale. Place the fuel under the soft drink can (If the fuel is half a cashew nut or cheetos stick it to a wine cork using a pin, then wrap the wine cork with a sheet of aluminum foil). Set the stopwatch to 1 minute.
Photosynthesis: - Outline what photosynthesis is/why autotrophs do it - Describe how carbon dioxide is used in photosynthesis. As it is used in the light independent stage (LIS), you should focus on this, not the light dependent stage (LDS). Respiration: - Outline what respiration is/why organisms all have to do it - Describe how carbon dioxide is produced in respiration. As it is produced in the link reaction and the Krebs cycle, you should focus on this, not on glycolysis and the electron transfer chain. Exchange of carbon dioxide between an organism and its environment: - Pick a couple of contrasting organisms (e.g.