Yahoo Canada Web Search

Sign In

Search results

    • Image courtesy of pinterest.com

      pinterest.com

      • As photosynthesis proceeds oxygen is released into the interior of the leaf, which changes the buoyancy--causing the disks to rise. Since cellular respiration is taking place at the same time, consuming oxygen, the rate that the disks rise is an indirect measurement of the net rate of photosynthesis.
      cpb-us-e1.wpmucdn.com/blogs.cornell.edu/dist/3/1009/files/2015/09/Floating-Leaf-Disk-Brad-Williamson.pdf

      The Floating Leaf Disk Assay for Investigating Photosynthesis

  2. People also ask

  3. www.sciencebuddies.org › science-fair-projectsUse Floating Leaf Disks to Study Photosynthesis

    Without the use of extensive laboratory equipment, the rate of photosynthesis can be determined indirectly by conducting a floating leaf disk assay to measure the rate of oxygen production (Figure 2). In the floating leaf disk assay, 10 or more leaf disk samples are punched out of a leaf.

  4. www.ableweb.org › biologylabs › wp-contentPhotosynthesis/Respiration in Leaf Disks - ableweb.org

    You will need to experimentally stop photosynthesis in your leaf disks to measure respiration. Think about the role of oxygen in respiration. How will cellular respiration influence the floating leaf disc assay for photosynthesis? How can you demonstrate that cellular respiration is occurring? What is the role of oxygen in cellular respiration?

  5. Videos

    View all

  6. bio.libretexts.org › Learning_Objects › Laboratory2.1: Photosynthesis Protocol - Biology LibreTexts

    Jul 11, 2023 · For photosynthesis to occur in the leaf disks that have had the air sucked out, you will need to provide the leaf disks with light and a good source of CO 2 dissolved in water. For this purpose, you will use a solution of sodium bicarbonate (NaHCO 3 ) in water.

  7. cpb-us-e1.wpmucdn.com › blogs › distThe Floating Leaf Disk Assay for Investigating Photosynthesis

    As photosynthesis proceeds oxygen is released into the interior of the leaf, which changes the buoyancy--causing the disks to rise. Since cellular respiration is taking place at the same time, consuming oxygen, the rate that the disks rise is an indirect measurement of the net rate of photosynthesis. !"#$%&"'()*.

    • 1MB
    • 8

  8. www.flinnsci.com › globalassets › flinn-scientificPhotosynthesis Study Technique - Flinn Sci

    Disks of leaf tissue are vacuum-infiltrated to replace intercellular air with liquid. As photosynthesis takes place, if the rate of photosynthesis exceeds the rate of cellular respiration, the accumulating oxygen imparts buoyancy to the leaf disk, and it floats.

  9. bio.libretexts.org › Learning_Objects › Laboratory1.8: Cell Respiration and Photosynthesis - Biology LibreTexts

    Jul 11, 2023 · If this leaf disk is placed in a solution with an alternate source of carbon dioxide in the form of bicarbonate ions, then photosynthesis can occur in a sunken leaf disk. As photosynthesis proceeds, oxygen accumulates in the air spaces of the spongy mesophyll and the leaf becomes buoyant and floats.

  10. www.sciencewithgrapes.com › uploads › 5/0/9Floating Leaf Disk Photosynthesis Lab - Science With Grapes

    When the air spaces are infiltrated with a solution the overall density of the leaf disk increases and the disk sinks. The infiltration solution includes a small amount of sodium bicarbonate (NaHCO3) thus enabling the bicarbonate ion to serve as the carbon source for photosynthesis.