NCBE-SAPS photosynthesis kit
This kit, which is based on one previously supplied by Science and Plants for Schools (SAPS), allows students to investigate photosynthesis semi-quantitatively using algae immobilised in calcium alginate.
ABOUT THIS KIT
Introductory school investigations of photosynthesis include the evolution of oxygen by Canadian pond weed (Elodea canadensis), Cabomba caroliniana* or Ceratophyllum demersum, or testing for starch in Pelargonium leaves that have been decolourised. Both methods are difficult to quantify, and the second method often misleads students.
In this procedure, algae, immobilised in calcium alginate, provide a standardised amount of photosynthetic material, enabling semi-quantitative experiments to be undertaken. The rate of carbon dioxide uptake by the immobilised cells is used to measure the rate of photosynthesis; this can be done simply by observing the colour change of hydrogencarbonate indicator, either by eye or using a colorimeter.
The effect of varying the intensity or wavelength of the light may be studied, as can the effect of temperature or cell density. Different species of algae or cyanobacteria may also be tested. The kit is therefore ideal for individual practical investigations.
This kit is based upon work undertaken by Debbie Eldridge from King Ecgbert School (Sheffield) while working on a SAPS/Robinson College Schoolteacher Fellowship.
Ideal for investigations of factors affecting photosynthesis at A Level, GCSE or equivalent.
* Note that Cabomba caroliniana is now classified as an invasive species, and has been banned for import, culturing or sale under EU Regulation 1143/2014.
The kit contains:
EACH STUDENT OR GROUP WILL ALSO NEED
The following replacement items are available for the NCBE-SAPS Photosynthesis Kit:
NCBE-SAPS PHOTOSYNTHESIS KIT
NCBE-SAPS Photosynthesis kit .....£80.00 (GBP)
All of the prices on this page are in GBP and do not include Value Added Tax (VAT). This tax applies within the European Union only. Postage and handling must also be paid on orders from outside the United Kingdom. Details of how to order are given on the price list and on the Ordering web page.
Scenedesmus quadricauda. This species forms colonies of four (or two, eight, or 16) cells attached side by side, arranged linearly or in a zigzag. The terminal cells in each cluster have spiny projections. Each cell is 11–18 µm long and 3.5–7 µm wide. Image source: G. Fahnenstiel, U.S. NOAA.