Agriculture

Transpiration of leaves (with the Cobra3 Basic-Unit)

Principle

Transpiration of leaves.

Tasks

1. To prepare diagrams to illustrate the transpiration of plants.
2. To discuss the reasons of the differences of the pressure curve decrease.

What you can learn about

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Glycolysis (pressure measurement, with Cobra3 Basic-Unit)

Principle

Glycolysis (measurement of pressure)

Tasks

1. To identify glycolysis by measuring the production of Co2 and plotting graphs.
2. To investigate the influence of temperature and pH on metabolic activity.< ...

Ionic permeability of the cell membrane (with the Cobra3 Basic-Unit)

Principle

The cell membrane regulates the transport of nutrients and water into the cell, and of waste products and water out of the cell. This can take place passively, e.g. on the basis of osmotic processes (differences in concentration), as well as actively.

Tas ...

Ionic permeability of the cell membrane (with the Cobra3 Chem-Unit)

Principle

The cell membrane regulates the transport of nutrients and water into the cell, and of waste products and water out of the cell. This can take place passively, e.g. on the basis of osmotic processes (differences in concentration), as well as actively. ...

Substrate inhibition of enzymes (with the Cobra3 Basic-Unit)

Principle

The enzymatic hydrolysis of urea in aqueous solution liberates carbon dioxide and ammonia. The ions of these compounds increase the conductivity of the solution.

Tasks

1. Conductivity measuremnts enable ...

Enzyme kinetics: Inhibition and poisoning of enzymes (with the Cobra3 Basic-Unit)

Principle

The enzymatic hydrolysis of urea in aqueous solutions liberates carbon dioxide and ammonia. The ions of these compounds increase the conducitivity of the solution.

Tasks

1. Conductivity measurements enab ...

The enzymatic activity of catalase (with the Cobra3 Basic-Unit)

Principle

Determination of  the enzymatic activity of catalase.

Tasks

1. The examine the enzymatic decomposition of hydrogen peroxide, a cell respiratory poison, in the liver.
2. To investigate the influence ...