S: CELL PROJECT
BC: Mackenna werner and Katy Walstad.
FC: Mackenna Werner Katy Walstad 4A
1: The cell theory or cell doctrine, states that all organisms are composed of similar units of organization, called cells. | The Three Principles of a cell are: 1. All living things are made of cells. 2. Cells are the basic units of life. 3. Cells come only from other cells.
2: Hooke had discovered plant cells -- more precisely, what Hooke saw were the cell walls in cork tissue. In fact, it was Hooke who coined the term "cells": the boxlike cells of cork reminded him of the cells of a monastery. Hooke also reported seeing similar structures in wood and in other plants. | Jakob Schleiden and the physiologist Theodor Schwann discovered that both plant cells and animal cells had nuclei. Based on their observations, the two scientists conceived of the hypothesis that all living things were composed of cells. In 1839, Schwann published 'Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals', which contained the first statement of their joint cell theory.
3: In 1855 Rudolf Virchow proposed an important extension of cell theory that "All living cells arise from pre-existing cells". This statement has become what is known as the "Biogenic law". EUKARYOTIC CELLS AND PROKARYOTIC CELLS: A eukaryote is an organism whose cells contain complex structures enclosed within membranes, and it has the nucleus. The prokaryotes are a group of organisms that lack a cell nucleus.
4: Plant VS Animal Cells
5: Plant Cells: Plant cells are eukaryotic and have many of the structures found in animal cells. They consist of a cell wall and chloroplasts. Animal Cells: Consists of a cell membrane, the cytoplasm, and a nucleus. They have a soft membrane on the outside that allows fluids and nutrients to easily come inside the cell, and allows waste to be transported out.
6: Cell Structures: Nucleus: Contains the cells DNA, and processes in growth, metabolism, ad reproduction. Regulates all cell activity by controlling enzymes that are in the body. "The brain of the cell." Ribosome: Cell organelle composed of RNA and protein. The site of the protein synthesis cellular structures are in proteins. Lysosome: Contains the cell's digestive enzymes. They work with the ER, and Golgi, in the distribution, packing and production of proteins. Mitochondria: Organelle that harvest energy from organic compound to make ATP, the main energy currency of the cells. Most Eukaryote cells contain many mitochondria. Chloroplast: They capture the suns energy and convert it to the usable energy. This process is called Photosynthesis. The chloroplast is the Solar Panels, its captures sunlight and turns it into energy.
7: Cell Structures: Cell Wall: A vigia structure that surrounds the cell membrane and provides support to the cell. Smooth ER: Part of the endoplasmic reticium that is in the tube form. It is the synthesis of the lipids, metabolism o carbohydrates and calcium concentration, drug detoxification, and attachment o receptors. Cytosketeton: the backbone of the cell. Its main function is the maintain shape and provide structure. Looks like wire. Flagella: The long thread like structure that protrudes from the cells surface. The flagella enables movement. Rough ER: The site o protein synthesis. It provides structure of the cell wall.
10: Cell Membrane | -is the outer covering of a cell keeps the ingredients of a cell -is a flexible lipid bilayer -made complex by the presence of numerous proteins that are important to cell activity
11: homeostasis | 1. the tendency of a system, especially the physiological system of higher animals, to maintain internal stability, owing to the coordinated response of its parts to any situation or stimulus that would tend to disturb its normal condition or function.