Table of Contents
- 1 How two ways can the rate of photosynthesis be measured?
- 2 How can we measure the rate of photosynthesis in the lab?
- 3 Can oxygen be used to measure the rate of photosynthesis?
- 4 How would you measure the rate of photosynthesis in spinach leaves?
- 5 How do you test a leaf for photosynthesis?
- 6 How is co2 used to measure photosynthesis?
- 7 What is the equation for the rate of photosynthesis?
- 8 How to measure photosynthesis rate?
How two ways can the rate of photosynthesis be measured?
How can photosynthesis be measured? Directly: by the production of oxygen(counting bubbles) or the uptake of carbon dioxide (measuring pH of surroundings). Indirectly by an increase in biomass.
How can we measure the rate of photosynthesis in the lab?
Because oxygen is one of the byproducts of photosynthesis, we can measure the rate of photosynthesis in leaves by observing the release of oxygen.
What are three ways you can measure the rate of photosynthesis?
What are the different methods of measuring the rate of photosynthesis?
- Measuring the uptake of CO2
- Measuring the production of O2
- Measuring the production of carbohydrates.
- Measuring the increase in dry mass.
Can temperature be used to measure the rate of photosynthesis?
Temperature. As with other chemical reactions, the rate of photosynthesis increases as the temperature rises. Photosynthesis is controlled by enzymes , which become denatured if the temperature is too high. As a result, the rate of photosynthesis reaches its maximum at an optimum temperature, then decreases.
Can oxygen be used to measure the rate of photosynthesis?
7 Explain that the rate of photosynthesis can be measured directly by the production of oxygen or the uptake of carbon dioxide, or indirectly by an increase in biomass.
How would you measure the rate of photosynthesis in spinach leaves?
Determining a method to measure the rate of photosynthesis was an outstanding question, but it was discovered that the rate can be determined either by measuring the consumption of carbon dioxide or the accumulation of oxygen (College Board 1997).
How can light intensity be used to measure the rate of photosynthesis?
Method
- Set up the apparatus as in the diagram.
- Leave for five minutes for the pondweed to acclimatise to the new light intensity.
- Count the number of bubbles given off in one minute.
- Move the light 10 cm further back.
- Leave for five minutes for the pondweed to acclimatise again.
How can biomass be used to measure photosynthesis?
Finally, photosynthesis can be measured through an increase in biomass. If batches of plants are harvested at a series of times and the biomass of these batches is calculated, the rate increase in biomass gives an indirect measure of the rate of photosynthesis in the plants.
How do you test a leaf for photosynthesis?
heat a plant leaf in boiling water for 30 seconds (this kills the leaf, stopping any chemical reactions) add the leaf to boiling ethanol in a water bath for a few minutes (the boiling ethanol dissolves the chlorophyll and removes the green colour from the leaf – it turns white so it is easy to see the change in colour)
How is co2 used to measure photosynthesis?
Count the number of oxygen bubbles given off by the plant in a one -minute period. This is the rate of photosynthesis at that particular concentration of CO2. The gas should be checked to prove that it is indeed oxygen – relights a glowing splint.
How do you measure photosynthesis directly?
How do you calculate the rate of photosynthesis?
To measure the rate of photosynthesis, place a sprig of elodea in a test tube next to a light source and calculate the number of air bubbles coming out of the plant. Change lighting and availability of carbon dioxide to alter the rate of photosynthesis.
What is the equation for the rate of photosynthesis?
carbon dioxide+ water = oxygen + glucose. Write the symbol equation for photosynthesis. 6CO2 + 6H2O = C6H12O6 + 6O2. Name 4 factors that can affect the rate of photosynthesis. LIGHT. CONCENTRATION. TEMPERATURE. CHLOROPHYLL. Draw a graph to show how temperature affects the rate of photosynthesis.
How to measure photosynthesis rate?
Put some pondweed into a glass full of water. Then set up a lamp 10 cm away from where the pondweed floats.
How does temperature affect photosynthesis?
Photosynthesis. The sun shines through a branch of green leaves. Photosynthesis is,for lack of a better explanation,how plants and some other organisms “eat.”