Living Things

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The Cell

Happy Learning Español

The Cell

Hello friends, welcome to a new Happy Learning video. Today we are going to learn about the Cell.

All living organisms are composted of cells. Some have only one cell and are called unicellular, such as this microscopic bacteria. Others on the other hand have many cells and they are known as multicellular, such as this bear.

But do you know what a cell is?

The cell is the smallest part of a living organism...though some, such as this egg, can be seen easily. By the way, did you know that an ostrich egg is the biggest cell that exists?

The cells of both animals and plants have three vital functions: nutrition, relation and reproduction.

The cell parts consist of the membrane, the cytoplasm and the organelles, making the nucleus the most important organelle. The truth is, these are all very strange names but don't worry because if you listen closely, you will understand everything perfectly.

The membrane is the outer layer which is around the cell and protects it from external  means, such as light and temperature. As well as that, the membrane allows  nutrition to function by facilitating the nutrients to enter and the waste to exit. 

The cytoplasm is a liquid substance which is found in between the membrane and the nucleus, and it is here in the cytoplasm where you can find all the organelles. 

The nucleus is the cell´s most important organelle, as it is the brain and directs its functioning. The genes are found there as well as the hereditary characteristics of all living organisms. We are very similar to our parents because we inherit their genes, if not, observe theses baby zebras and crocodile, aren't they identical to their parents?

There are different types of organelles, as well as each having a different function...we have already seen that the nucleus is the most important one, but there are others in charge of directing the food or eliminating the waste.

In the plant cells, the membrane is covered by a rigid layer called the cell wall which allows the plant to stand up, strong and erected. Another thing is that many have a substance called chlorophyll in their cytoplasm which gives the green color and allows them to make their own food from water and minerals.

Well, now you know that all living organisms, no matter how big or small, are made up of cells and that all of them are fundamental, imperative for life´s balance, our beautiful life. So on behalf of Happy Learning, as always, we ask you to please respect and look after nature as well as its inhabitants, meaning all cells...

Goodbye friends and don't  forget to subscribe to Happy learning.

The Cell

Happy Learning Español

The Cell

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Living Things