Using a hole punch, cut out 10 leaf disks for each cup from the provided spinach leaves. Light if CO2 addressed or CO2 if light addressed or temperature; Fixed lamp distance or wattage or NaHCO3 or water bath; To ensure that any change is not due to that factor 21 Photosynthesis How would you measure the rate of photosynthesis? This procedure indirectly measures the net rate of photosynthesis. Oxygen O2 is a byproduct of photosynthesis and is released into the atmosphere.
As either light intensity or CO2 conc.
What is this precaution and why is it necessary?
Hold this vacuum for about 10 seconds. These cells in the middle of the leaf contain many chloroplasts. Elodea 19 Photosynthesis How was the rate of photosynthesis measured? What is this precaution and why is it necessary?
Pour the disks and the solution from the syringe into the appropriate clear plastic cup. Photosynthesis and cellular respiration are important processes by which energy is acquired and utilized by organisms 2 Video content 1. Discuss why photosynthesis is an important process on Earth 3. Replace the plunger and push it in carefully until only a small volume of air and leaf disks remain in the barrel.
Lamp distance or wattage or quantity of NaHCO3 4 Photosynthesis i State a factor that you kept constant during the investigation. Using a hole punch, cut out 10 leaf disks for each cup from the provided spinach leaves. Tap the syringe to suspend the leaf disks in the solution.
Fill a second cup with only water to be used as a control group.
Water bath or described 12 Photosynthesis If pond water is used in the experiment, it is likely to contain dissolved carbon dioxide. Explain why an aquatic plant is used in preference to a land plant such as a geranium. Bring your written prediction to the next class period. This procedure indirectly measures the net rate of photosynthesis. Suggest two possible sources of carbon dioxide in pond water.
If the solution has bicarbonate ions and enough light, the leaf disk will begin to produce sugars and oxygen through the process of photosynthesis. Pour the bicarbonate solution into a clear plastic cup to a depth of about 3 cm. Explain the process of photosynthesis and where it occurs in a cell 2.
Suggest two possible sources of carbon dioxide in pond water.
Within this cell organelle is the chlorophyll that captures the light from the Sun.