FC: Cells: History, Theories, and Structures
1: Cells: History, Theories, and Structures | By: Nisha Sabapathy and Aida Tajahmadi Mrs. Parker- 2B
2: Robert Hooke | Hooke has made many contributions to biology. He even wrote a book in 1655 named Micro graphing. After looking at a cork underneath a microscope; Robert was able to find that the corks' tiny pores look almost like plant cell walls. He was responsible for the word "cells." He also confirmed Leeuwenhoek's theory of the "little animals" which we know today as bacteria and protozoa.
3: Matthias Schleiden | Along with Schwann, Schleidan had discovered that plants parts were created out of cells. Schleidan was a German botanist who looked at plant parts underneath microscopes. Today Schwann and Schleidan are considered to be the founders of cell theory.
4: Rudolf Ludwig Karl Virchow | Was born in Poland in 1821. He developed the theory that diseases form in cells and cell groups, not in whole organisms. He popularized the medical rule that every cell originates from another cell." He encouraged his students to see through microscopes. He stated that all diseases involve change in normal cells.
5: Theodor Schwann | Theodor Schwann had come to the conclusion that plants and animals have different cell structures. Although animal and plants cells do have their differences; he discovered cells are the basic structure to life. He also applied Schleidan's cell theory to the evolution of animal life.
6: Cell Membrane Cell Membranes are fluid-like bubbles made out of lipids. It separates the inside of the cell from the outside, so that only specific substances are allowed in, and out.
7: Nucleus The Nucleus is in the center of the cell, and holds all the DNA. They help with growth, and reproduction. They're only found in Eukaryotic cells.
8: Cell Wall | The cell wall provides support and structure for the cell, and surrounds the cell membrane. Cell walls are only founds in plant cells, prokaryotic cells, and fungi cells.
9: Mitochondria | Mitochondria are the organelles that are surrounded by two membranes. One is folded, and the other is smooth. They are the site of cellular respiration, which means they produce and harvest ATP out of organic compounds,
10: Ribosomes Ribosomes are the cellular structure where proteins are made. They are found in the ER, and are the site of protein synthesis.
11: Smooth Endoplasmic Recticulum | The Smooth ER does not have Ribosomes. It's function is to make lipids, and breakdown toxic substances.
12: Rough Endoplasmic Recticulum | The Rough ER moves proteins, and other substances around the cell. The Rough ER has ribosomes attached to it, giving it a rough appearance. They transport proteins made by the ribosomes, and then forms a vesicle.
13: Lysosomes Lysosomes are small sphere-like organelles that contain digestive enzymes. They work together with the Golgi Apparatus, and the ER to produce, package, and distribute proteins.
14: Cytoplasm cytoplasm is the jelly-like substance that fills up the cell. It is made up of 80% water, and contains the rest of the organelles.
15: Eukaryotic Cell A Eukaryotic cell is a cell with a nucleus, chromosomes, and a mitotic cycle. They are the cells of any organism, not bacteria.
16: Prokaryotic Cell Prokaryotes are the simplest, and smallest cells. They do not have a nucleus. It's enzymes and ribosomes move freely in the cytoplasm because there are no internal compartments.
17: Cell Theory 1. All living things are made up of one or more cells. 2. Cells are the basic units of structure & function in organisms. 3. All cells arise from existing cells.