General

Ionic permeability of the cell membrane

Principle

The cell membrane controls the transport of nutrients and water into the cell as well as the transport of waste products and water out of the cell. This can be passive, i.e. caused by osmotic processes, as well as active. The aim of this experiment is ...

Comparison of soil and air temperatures in the course of a day

Principle

How does the temperature of the air affect the temperature of the soil in the course of a day?

Impact of the forest type on humidity, temperature and brightness

Principle

Various types of woodland exhibit different sorts of climate data. Temperature, humidity and lighting conditions do not only depend on meteorological factors but also on the nature of the vegetation. The density of the tree canopy determines how much light can penet ...

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.

Tas ...

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 the rate of hydrolysis of ure ...

Substrate inhibition of enzymes (with the Cobra3 Chem-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 measurements enable the rate of hydrolysis of ur ...

Enzyme inhibition (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 enable the rate of hydrolysis of ...

Enzyme inhibition (poisoning of enzymes) (with the Cobra3 Chem-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 enable the rate of hydrolysis of ...

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 of the temperature and pH o ...