LA CÉLULA
Hola amigos, bienvenidos a un nuevo vídeo, hoy vamos a conocer a ¡la célula!
Todos los seres vivos están compuestos por células.
Algunos solo tienen una y les llamamos seres unicelulares como… ¡¡¡esta microscópica bacteria!!!. Otros tienen muchas células y les llamamos seres pluricelulares como… ¡¡¡este oso!!!
Pero ¿sabéis que es una célula?
La célula es la parte más pequeña de un ser vivo. aunque algunas, como este huevo, las podemos ver a simple vista. Por cierto ¿sabéis que los huevos de avestruz son las células más grandes que existen?
Las células animales y vegetales realizan las tres funciones vitales: la nutrición, la relación y la reproducción.
Las partes de una célula son la membrana, el citoplasma y los orgánulos, siendo el núcleo el orgánulo más importante.
El núcleo es el orgánulo más importante de la célula ya que es su cerebro y dirige su funcionamiento.
En las células vegetales, la membrana está recubierta por una capa rígida llamada pared celular que permite que la planta se mantenga de pie, firme, rígida. Además muchas tienen en el citoplasma una sustancia llamada clorofila que les proporciona el color verde y les permite fabricar su propio alimento a partir de agua y sales minerales.
Como siempre, os pedimos que respetéis y cuidéis la naturaleza y a todos sus habitantes, es decir, a todas la células…
Adiós amigos
THE CELL Hello friends, welcome to a new video, today we are going to meet the cell! All living things are composed of cells. Some only have one and we call them unicellular beings like ... this microscopic bacterium !!! Others have many cells and we call them multicellular beings like ... this bear !!! But do you know what a cell is? The cell is the smallest part of a living being. although some, like this egg, we can see them with the naked eye. By the way do you know that ostrich eggs are the largest cells that exist? Animal and plant cells perform the three vital functions: nutrition, relationship and reproduction. The parts of a cell are the membrane, the cytoplasm and the organelles, the nucleus being the most important organelle. The nucleus is the most important organelle of the cell since it is its brain and directs its functioning. In plant cells, the membrane is covered by a rigid layer called a cell wall that allows the plant to stand, firm, rigid. In addition, many have a substance called chlorophyll in the cytoplasm that gives them the green color and allows them to make their own food from water and mineral salts. As always, we ask you to respect and take care of nature and all its inhabitants, that is, all the cells ... Goodbye friends
THE CELL Hello friends, welcome to a new video, today we are going to meet the cell! All living things are composed of cells. Some only have one and we call them unicellular beings like ... this microscopic bacterium !!! Others have many cells and we call them multicellular beings like ... this bear !!! But do you know what a cell is? The cell is the smallest part of a living being. although some, like this egg, we can see them with the naked eye. By the way do you know that ostrich eggs are the largest cells that exist? Animal and plant cells perform the three vital functions: nutrition, relationship and reproduction. The parts of a cell are the membrane, the cytoplasm and the organelles, the nucleus being the most important organelle. The nucleus is the most important organelle of the cell since it is its brain and directs its functioning. In plant cells, the membrane is covered by a rigid layer called a cell wall that allows the plant to stand, firm, rigid. In addition, many have a substance called chlorophyll in the cytoplasm that gives them the green color and allows them to make their own food from water and mineral salts. As always, we ask you to respect and take care of nature and all its inhabitants, that is, all the cells ... Goodbye friends
