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Biology: Cell Structure I Nucleus Medical Media

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6. Cells are really tiny. So tiny that we cannot see them using our naked eyes. We usually need microscope to see those cells. However, exceptions are always there. Nerve cells or neurons that can stretch right up to our toes starting from our hips.

7. Here is something really interesting that you should know. The size of a cell is usually determined by its diameter and not by the length. The usual size of a typical cell in human body can range anywhere between 10 µm and 100 µm (µm stands for micron, which is 1 millionth of a meter or 1 thousandth of a millimeter).Play Video

8. The largest cell in human body is approximately 120 µm. It is the female mature egg and the smallest cell in human body is the spermatozoon’s head with the size of 5 µm.

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Estimados alumnos:
Tienen la posibilidad de ver, leer y conocer acerca de las células pero en inglés; aprender o profundizar su conocimiento acerca de su importancia, su composición y su utilidad .
Es un tema que no desconocen por eso no va a se difícil entender la información.Tiene la posibilidad de leer en contexto, hacer correr, detener y volver a ver los videos tantas veces sea necesario.
Luego de hacerlo dos o tres veces, tomen nota de lo relevante.
Elije un concepto o subtema que te guste.
Luego realicen en inglés un mapa conceptual, o una presentación, una infografía, un video, texto e imagen o lo que crean sirva para mostrar lo que aprendieron acerca de los temas recorridos.
Por último agreguen su producción  al  siguiente link del padlet colaborativo en el que todos uds. subirán sus producciones:

https://padlet.com/carolinaseligrat1/h26fmy256gnk

O puedes escanear el QR que figura aquí debajo o en el documento anexo, así ingresan al Padlet que tienen para subir sus producciones para compartir con el grupo de 4to Cs. Naturales.

IMPORTANTE:
No olviden colocar nombre y apellido en sus producciones.

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Cells - Introduction | Biology | Don't Memorise

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Interesting Cell Facts:

1. Everything that has life – from humans to plants to animals to birds to microorganisms – everything is made of cells. Some living organisms can be single-celled while some are multicellular. For example, bacteria are single-celled organisms while trees, birds, animals, humans – they are all multicellular organisms.

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Human Cells

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HUMAN CELL - The Dr. Binocs Show | Best Learning Videos For Kids | Peekaboo Kidz

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2. Now, we know from our scientists worldwide that live just evolved on Earth somewhere in the distant past. For life to evolve, cells were required. So, somewhere in the distant past, the first cell originated on this planet. Just how back in past we are look into? According to speculations of scientists, the first cell originated on Earth some 3.8 billion years ago.

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There are 23 pairs of chromosomes inside a single cell. That means, there are 46 chromosomes inside a single cell in human body! Imagine how tiny these chromosomes need to be! These chromosomes are actually inside the nucleus of the cell.

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Eukaryotic cells and the Prokaryotic cells:

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Eukaryotic cells and the Prokaryotic cells:

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4. There are two primary types of cells – the Eukaryotic cells and the Prokaryotic cells. Difference between the two? Well, here is the difference: Eukaryotic cells have a membrane enclosing a true nucleus. Prokaryotic cells on the other hand do not have a definite nucleus.

5. The first ever cell that originated on Earth was a Prokaryotic cell. Eukaryotic cells later evolved from the Prokaryotic cells.

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3. Here is something interesting – there are some nonliving objects on earth that are also made of cells but they (those cells) were once living. For instance wood (dead cells of plants), dust in our house (a portion of that contains dead cells), wool, hair, leather (they were also living cells at one point). Things like steel, iron, ceramics, aluminum etc. are not made of cells.