Types of bridges include beam-, arch-, suspension-, cantilever and truss bridges.
NAD⁺ is a coenzyme that plays an important role mainly in catabolic processes, while NADP is important in anabolic processes as hydrogen carriers.
The most ancient group of animals, they live underwater, lack real tissues and body symmetry.
The knee joint is made up by the femur, the tibia and the kneecap.
During swallowing food travels from the mouth cavity into the stomach.
A species of mollusk widespread in freshwaters.
The large white butterfly is a common species of butterflies, through which we demonstrate the anatomy of butterflies.
Moles are small subterranean mammals with modified, spade-like forelegs.
A presentation of the major administrative units of China.
ATP is the main source of energy for cells.
Jellyfish are free-swimming marine animals, a species of Cnidaria, the most ancient group of Eumetazoans.
Practice the German alphabet and form words from the letters.
The anatomy of annelids is demonstrated through the example of the common earthworm.
A regular square pyramid is a right pyramid with a square base and four triangular faces.
The legendary Mongol ruler Genghis Khan established a huge empire through his conquests.
Surface tension is the property of a liquid that allows it to obtain the smallest surface area possible.
The battle ended with the overwhelming victory of the Macedonian army over the Persian army led by Darius III.
Surface epithelia cover the external and internal surfaces of the body
The axolotl, also known as Mexican salamander, is an amphibian species that keeps its gills even in adulthood.
The migration of large human populations began in Ancient times.