🎓 Free Enem Course: https://goo.gl/2rebsa ✔️ Mock exam: https://bit.ly/38L4rsj Subscribe to the channel to receive everything about Enem 100% FREE https://bit.ly/37WGBZi #cell #structure #biology /// ABOUT THE VIDEO The cell is the smallest structural part of a living being. In this Biology class, professor Cláudia Aguiar, from the Free Enem Course channel, explains everything about cells, their functions, types and shapes. Cells are responsible for giving structure and functionality to living beings. In other words, cells are structural and functional units of a living being, which can be unicellular (like bacteria) or multicellular. A unicellular living being is one that has a single cell, while a multicellular living being has more than one. To have a single cell, that is, to be a unicellular living being, the organism must be microscopic and simple. On the other hand, multicellular individuals are more complex, as they have a variety of cells that perform different functions, forming a large organism. Cell functions: cells have different functions. Cells can be for absorption, information transmission, defense, etc. In addition to having different functions, cells also have different shapes, depending on the function to be performed and where they are located in the organism. Basic structure of cells: there is a basic structure that is common to all cells. This basic structure of cells is formed by the plasma membrane, the cytoplasm and the genetic material. The plasma membrane is what gives the cell its limit, its shape. The function of the plasma membrane is to control what enters and what leaves the cell. In addition, the plasma membrane has the ability to move, that is, to enter to perform phagocytosis, or eliminate something that is inside the cell and needs to be removed. The plasma membrane is formed by lipids, phosphorus and proteins, which help in this control. The cytoplasm is what occupies the space delimited by the plasma membrane. The cytoplasm contains substances that the cell needs, and some cells contain organelles, structures that perform functions within the cell. Genetic material is what contains the information regarding that cell, its genetic characteristics. The genetic material of a cell can be of two types: DNA or RNA. The genetic material can be loose in the cytoplasm, or contained in a covering, called the cell nucleus or nuclear envelope. For example, single-celled cells do not have a nuclear envelope and are therefore called prokaryotic cells (i.e., before the nuclear envelope). Cells that have a cell nucleus or nuclear envelope are called eukaryotes. Eukaryotic cells, in addition to having the basic structure, also have membranous organelles or cytoplasmic organelles, such as the Golgi complex. Ribosomes are a type of organelle that is present in both eukaryotic and prokaryotic cells, as they are responsible for the production of proteins. ⏱ TIMESTAMPS / TOPICS 00:00 What is a cell 00:55 Unicellular and multicellular living beings 01:45 Cell functions 03:10 Cell shapes 04:40 Basic cell structure 04:45 Plasma membrane 06:25 Cytoplasm 07:20 Cell genetic material 08:08 Prokaryotic and eukaryotic cells 10:40 Organelles 🔴 WATCH ALSO PLASMA MEMBRANE • PLASMA MEMBRANE (CYTOLOGY) Res... CYTOPLASMIC ORGANELLES • CYTOPLASMIC ORGANELLES (CYTOLOGY)... EUKARYOTIC AND PROKARYOTIC CELLS • CYTOLOGY: eukaryotic and prokaryotic cells... ❤️ SOCIAL MEDIA INSTA @cursoenemgratuito TWITTER @enemgratuito FACE /cursoenemgratuito/ /// AFTER ALL, WHAT IS THE FREE ENEM COURSE? We are a channel of completely free classes on the topics that most often appear in the Enem and entrance exams. We emerged to democratically share content and information about the Enem, helping you get into the college of your dreams ♥ We also have a website with written classes, questions and a study plan for you to organize yourself! Want to study with us? 🎓 ACCESS OUR 100% FREE COURSE FOR THE ENEM https://goo.gl/2rebsa