Cyanobacteria

Description:

Cyanobacteria Prokaryotes (Prokaryota) or prokaryotes (Prokaryonta) are cellular organisms that do not have a nucleus. Your cell type is called a protocyte. Bacteria and archaea are prokaryotes. The name refers to the seedlessness (ancient Greek πρό pró "before", "before"; κάρυον káryon "nut" or "core"). The term prokarya is used less often; the name Monera is out of date. The division of living beings into prokaryotes and eukaryotes was first clearly emphasized for protists by Edouard Chatton and published in 1925. The more recent division of cellular organisms into three domains corresponds to the division of prokaryotes into two domains: bacteria and archaea. The third domain are the eukaryotes. The helix (έλιξ plural helices or helices), also called screw, helix, cylindrical spiral or helix, is a curve that winds around the jacket of a cylinder with a constant pitch. Winding direction The naming of the winding direction (helicity) follows the right-hand rule, the helix is ​​right-handed if it winds clockwise (seen in the direction in which it moves away from the viewer), otherwise left-handed. In botany, plants growing as right-handed helixes are called left-winding, because viewed from above, they grow counterclockwise upwards.