FC: Cell Theory | Three Principles of the Cell Theory 1. All living things are made up of cells and the products of those cells. 2.All cells carry out their own life functions 3.New cells come from other living cells.
1: The geniuses behind the development of Cell Theories.
2: Mathias Jakob Shleiden. In 1838 Schleiden proposed that all plants are composed of cells. Schleiden observed various cell structures and activities such as protoplasmic streaming. Schleiden also found the importance of the cell nucleus, and sensed its connection with cell division. He concluded that all plant parts are made of cells that an embryonic plant organism arises from the one cell.
3: Schwann Schwann not only verified the existence of cells, but he traced the development of many adult tissues from early embryo stages. Schwann proposed three generalizations concerning the nature of cells : first, animals and plants consist of cells plus the secretions of cells. Second, these cells have independent lives, which, third, are subject to the organism's life.
4: Robert Hooke In 1665, the cell was discovered by Hooke. However, Hooke did not know their real structure or function. His cell observations gave no indication of the nucleus and other organelles found in most living cells. Cell Theory was in contrast to the vitalism theories
5: Rudolph Virchow Virchow held the then-radical belief that disease originates in cells, not in tissues, organs, or entire organisms. He popularized the idea that every cell originates from another cell. At age 27, Virchow was sent to investigate a typhus epidemic in Upper Silesia, and in his report he stated that such outbreaks were caused not merely by poor hygiene but by abject poverty, illiteracy, and economic and political subjugation. This research led him to the theory that cells do become diseased.
6: Prokaryotic vs. | - The DNA floats freely around in an unorganized manner. - A cell wall is included which is made up of amino acid and sugar. | Same - DNA is the genetic material. - They are covered by a cell membrane. - They contain ribosomes. - Each require energy. - They are made from the same basic chemicals.
7: Eukaryotic | - Contain two things that the prokaryotic cells do not- a nucleus and organelles. - The DNA is held in the nucleus. - The cell's organelles allow it to preform more complex functions. - They contain two or more copies of every gene.
8: Plant vs. | Plant cells have many things in common with animal cells such as containing a cell membrane, ribosomes, a nucleus, the golgi apparatus, mitochondria, and the smooth/rough endoplasmic reticulum. Unlike animal cells, they contain a chloroplast, cell wall, and usually only have one large vacuole. Animal cells contain lysosomes and one or more small vacuoles.
9: Animal Cells | Plant cell | Animal Cell
10: Ten Cell Structures | Nucleus- the inner part of the cell that holds the DNA bound by a membrane. Cytoplasm- a gel-like substance that holds the organelles of the cell, Cell membrane- a fluid wall made up of lipids that separates the inside of a cell from the outside only allowing certain substances through. Ribosomes- found in the endoplasmic reticulum of a cell and they are the cellular structure on which proteins are made. Mitochondrion- the site of cellular respiration which produces ATP
11: Rough ER- a system of internal membranes that move proteins and other substances through a cell, this part contains ribosomes. Smooth ER- does not contain ribosomes, makes lipids and breaks down toxic substances. Lysosome- small organelles that contain the cell's digestive enzymes Golgi Apparatus- a set of membranes that serve as the packaging and distribution of the cell, several enzymes are present that modify the proteins received. Nucleolus- a region of the nucleus where ribosomes are partially found.
12: Cell membranes are mad up of lipids.They are fluid like bubbles. It separates the inside of the cell from the outside of the cell. The cell membrane gives support and protection. It controls the movement of materials in and out of the cell. It has an barrier the cells and its environment. The cell membrane is basically the protection of the cell.
13: Homeostasis is the process by which the body attempts to maintain a state of stable physiological balance. The body needs to maintain homeostasis in order to stay alive. Example:If you get cold, your body will start homeostasis by causing you to shiver, and that will warm you up. If you take a drug sedative drug, the body may attempt to maintain homeostasis resulting in agitation.