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Cells - Page Text Content

FC: Cells | by Jocelyn Oats & Makayla Guthrie | Mr. Chetty Biology 4A

1: The Principles 1. All forms are made up of one of more cells. 2. Cells come from the reproduction of other cells. 3. Cells are the most basic unit that can perform all of life's functions.

2: German scientist Matthias Jakob Schleiden was born on April 5, 1804. He was friends with Theodore Schwann and he came up with the conclusion that all plants were made of cells in the year 1838. He also observed that fungi live within or on some plant roots. These discoveries have been very beneficial to scientist thereafter.

3: Way back in the 17th century Robert Hooke, an English physicist was looking through his microscope. He was surveying a cork when he realized tiny pores which he named cells. He was the first to use this term "cells" and believed that they only existed in plants (since that is all that he studied).

4: Rudolf Virchow was a German pathologist in the 1800's through early 1900's. He came up with the theory that “all living cells arise from pre-existing living cells.” Other accomplishments made by Virchow include: he cofounded Virchows Archiv (a pathology journal), elected Prussian Diet, founded the Progressive Party, and devised the pathological process. This explained that diseases arose in individual cells contrary to the popular belief of them arousing in tissues or organs.

7: Theodore Schwann (also a German scientist) lived from 1810-1882. He was a successful microscopist, and studied animal tissue. In 1839 Schwann expanded on Schleiden's theory by stating that every living organism is comprised of cells.

9: The word Eukaryotic means "possessing a true nucleus". Basically they have a nucleus that is bound by a double membrane. The DNA is linear complexed with proteins called histones. The word Prokaryotic means the polar opposite of eukaryotic, which means that it doesn't contain a nucleus. The DNA is naked; it has no histones and isn't organized into chromosomes.

10: Nucleus: This is the controller of the cell. It contains the DNA and tells other organelles what to do. Mitochondria: This organelle makes the food for the cell & turns the food into energy. Cilia: Only found in Prokaryotic cells it is the hairlike outsides of the cell. Ribosomes & Lysosome: The first makes the protein while the latter is known as the janitor of the cell. Lysosomes clean out the cell by destroying old organelles and other dangerous substances. Endoplasmic Reticulum: This is divided into two sections: the rough ER and the smooth ER. they transport proteins to other parts of the cell. Cell Wall: Only found in plant cells this is the barrier for the cell. Cytoskeleton: maintains the cells shape, protects the cell, & enables cellular motion. Golgi apparatus: Stores the proteins (like a post office!!) Flagella: Final organelle it helps the cells & microorganisms travel.

11: From left to right: Mitochondria, Golgi Apparatus, Nucleus, ER, Cilia, Flagella, Lysosome, Cytoskeleton, Cell wall, Ribosome

12: Above (to the left) is a plant that is green which is made by the chlorophyll in plant cells. The central vacuole holds water for the plant cells, another thing animal cells don't have.

13: Animal cells make up the smallest components of animals. These cells are a lot like plant cells except for for 4 differences. Animal cells don't make they're own food, they don't have a cell wall nor a central vacuole ,and the animal cell doesn't contain chloroplasts. | Plant Cells are very interesting. They have the ability to make their own food trough a process called photosynthesis. They also contain chlorophyll which makes them have a green pigment.

14: Cell Membrane: They control what goes in and out of the cell Homeostasis: A state in which all body systems are working & interacting in an appropriate way to fufill all the needs of the person and/or the body. If the cell membrane doesn't take care of it's job, then it will affect homeostasis. If the cell membrane lets harmful substances into the body then the bodies systems will be affected, causing sickness,

16: Special Thanks to:

17: Google Images http://www.cod.edu/people/faculty/fancher/prokeuk.htm Biology book! http://www.britannica.com/EBchecked/topic/629797/Rudolf-Virchow

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  • By: Jocelyn O.
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    • By: Makayla G.
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  • Title: Cells
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  • Published: over 8 years ago