Abiotic Factors

An ecosystem is a system made up of various groups of organisms and the physical environment in which they relate to each other and to the environment. In an ecosystem we find. Biotic factors: They are organisms, that is, living beings. They range from bacteria to the largest animals and plants. They can be heterotrophs (they take their […]

Biotic Factors: Definition, Types and Examples

The biotic factors are all living organisms, interacting with other living organisms. On the other hand, the relationship between organisms in an ecosystem is also called an abiotic factor. These relationships condition the existence of all the inhabitants of the ecosystem, since they modify their behaviors, their way of feeding and reproducing, and in general the conditions necessary […]

Somatic cells: Definition & Examples

The somatic cells are those that form all the tissues and organs of the body of multicellular organisms, in distinction from sexual or germ cells ( gametes ) and ES cells (stem cells). All the cells that make up the tissues, organs, and those that circulate in the blood and other non-reproductive fluids are, in principle, somatic cells. This distinction consists not only […]

Unicellular and multicellular

The organisms are living things that are formed by one or more cells. Cells are the minimum units of life that have different degrees of complexity depending on their structure or organization. Unicellular organisms are those that are made up of a single cell, for example, bacteria and yeasts; Multicellular organisms are those that are made up of two or more cells, […]

Prokaryotic and Eukaryotic

The cell is the basic and indispensable unit present in every living being. It is the smallest element alive. The three vital functions of every organism (nutrition, reproduction, relationship) are carried out by all the cells that compose it. Depending on their structure, cells can be: Eukaryotic cells. They have a defined cell nucleus covered by a membrane. Within this membrane […]

Active and Passive transport

It is called cell transport to the exchange of substances between the cell interior and the external environment in which it is located. This occurs through the plasma membrane, which is a semipermeable barrier that delimits the cell. Cellular transport is vital for the entry of nutrients and dissolved substances into the environment, and the expulsion of residues or […]

Diffusion and effusion

The diffusion refers to mixing two gases together. For example, the aroma of a meal when entering a room is a consequence of the mixture of two gases. That is its dissemination. All diffusion always occurs: From a higher concentration to a lower concentration point. It is a gradual process since the molecule undergoes various modifications in diffusion with […]

Diffusion and osmosis

The diffusion and osmosis are characterized by the distribution of phenomena molecules of a body in another body that is in contact with the first or separately, but through a membrane semiplasmática. These two possibilities are precisely what opens the division between the two processes. What is diffusion? It is the diffusion that produces an intermingling of the molecules, as a […]

Viruses (biology)

A virus is a microorganism that causes different diseases. It is characterized by being made up of genetic material inside and being covered by a protein compound. The characteristic of viruses is that they enter the center of the cell and then reproduce inside it. The size of the viruses varies between 20 and 500 millimeters. There are around 5,000 viruses identified. However, […]