Biology

Decomposition of cellulose

Influence of the temperature on microbial decomposition pro-cesses

Influence of mineral oil or salt on the decomposition ofcellulose

Decomposition of organic substances in water

Microbial decomposition of mineral oil

Influence of temperature on the germination and growth of cress

Eight petri dishes are filled nearly to the brim with finely sieved, moist garden soil and 50 cress seeds are planted in each one. They are then placed inside a device which keeps each of the samples at a different temperature, whereby they are evenly distributed between cold and warm regio ...

Effect of heavy-metal ions on the activity of enzymes

Water quality - contamination with heavy metals

Principle

Heavy-metal ions may be carried into surface or ground water from mining fields or via the waste water of galvanicor similar production sites. They block the effect of enzymes so that the processes in the metabolism of the organisms that are controlle ...

Water quality - contamination with heavy metals

Principle

Demonstration experiment using wireless data transmission to a large digital to display. Heavy metal ions can seep into water courses, for example from galvanising plants or other similar industries. They have the effect of suppressing the action of enzyme ...

Giant chromosomes

Culturing of fruit flies (Drosophila melanogaster)

Mendel's first law - law of uniformity, dominant monohybridinheritance in animals

Dissolved components in different waters

Absorption of minerals by plants

Alcoholic fermentation