🪢 The prokaryotiс cell
Of all the types of cells revealed by the microscope, bacteria have the simplest structure and come closest to showing us life stripped down to its essentials. Indeed, a bacterium contains essentially no organelles - not even a nucleus to hold its DNA.
This property - the presence or absence of a nucleus - is used as the basis for a simple but fundamental classification of all living things. Organisms whose cells have a nucleus are called eukaryotes (from the Greek words eu, meaning “well” or “truly,” and karyon, a “kernel” or “nucleus”). Organisms whose cells do not have a nucleus are called prokaryotes (from pro, meaning “before”).
🪢 Прокариотическая клетка
Бактерии имеют самую простую структуру и иллюстрируют нам основы жизни. Они практически не содержат органелл, даже ядра, где хранится ее ДНК.
Это свойство - основа фундаментальной классификации всех живых существ. Клетки, имеющие ядро - эукариоты. Клетки, не имеющие ядра - прокариоты («про» — «раньше»).
Of all the types of cells revealed by the microscope, bacteria have the simplest structure and come closest to showing us life stripped down to its essentials. Indeed, a bacterium contains essentially no organelles - not even a nucleus to hold its DNA.
This property - the presence or absence of a nucleus - is used as the basis for a simple but fundamental classification of all living things. Organisms whose cells have a nucleus are called eukaryotes (from the Greek words eu, meaning “well” or “truly,” and karyon, a “kernel” or “nucleus”). Organisms whose cells do not have a nucleus are called prokaryotes (from pro, meaning “before”).
🪢 Прокариотическая клетка
Бактерии имеют самую простую структуру и иллюстрируют нам основы жизни. Они практически не содержат органелл, даже ядра, где хранится ее ДНК.
Это свойство - основа фундаментальной классификации всех живых существ. Клетки, имеющие ядро - эукариоты. Клетки, не имеющие ядра - прокариоты («про» — «раньше»).