Photosynthesis

Release of oxygen during photosynthesis

A simple experiment can demonstrate the release of oxygen by photosynthesis in qualitative fashion. Shoots of waterweed (elodea canadensis) are kept under a lid in a culture jar. The emerging bubbles are trapped under an assimilation bell jar.  Once a reasonable amount o ...

Determination of the yield of photosynthesis

Hill reaction

Paper chromatography of chloroplast pigments

Absorption spectrum of chloroplast pigments

Carbon dioxide dependence of photosynthesis

Photosynthesis (O2 pressure measurement) (with Cobra4)

Principle

Representation of the photosynthesis rate of a plant by measuring the oxygen pressure increase, in
white and green light as well as in the dark.

Photosynthesis (bubble-counting-method)

Photosynthesis (bubble-counting-method)

Principle

Measurement of the photosynthesis rate as a function of light intensity by counting the oxygen bubbles
that are released by a water plant.

The twenty-four-hour rhythm of an aquatic plant, completeset (interface version Cobra3 Chem-Unit)

Photosynthesis (bubble-counting-method) (with the Cobra3 Basic-Unit)

Principle

Photosynthesis (bubble counting method)

Tasks

1. To measure the dependence of photosynthesis on light by counting the oxygen bubbles given off by an aquatic plant.
2. To investigate the influence of the carbon dioxide content ...

Photosynthesis (O2 pressure measurement) (with the Cobra3 Basic-Unit)

Principle

Photosynthesis (measurement of oxygen pressure)

Tasks

1. To compare the increase in oxygen pressure during photosynthesis in white light, green light and in the dark.
2. To discuss the reasons fo ...