Transcript Document
Cell Function Cell work together to perform basic life processes that keep organisms alive. Getting rid of body wastes. Making new cells for growth and repair. Releasing energy from food. 2 Cell: a cell is a basic unit of structure and function of life. In other words, cells make up living things and carry out activities that keep a living thing alive. Your body is made up of specialized cells which carry out the processes needed for life. 3 Genetic material ◦ Contains the material for life (DNA) Cytoplasm fills cell interior – Liquid ◦ Contains organelles sugars, amino acids Plasma membrane(aka. Cell Membrane) Encloses the cell – it is like the cells’ skin 4 5 6 Cytoplasm Not an organelle, suspends the organelles Cell Membrane Nucleus Mitochondria Endoplasmic Reticulum (ER) Golgi Bodies Vacuoles 7 Gel-like substance which holds all the cell components together Made mostly of water Place where many chemical reactions occur 8 The flexible double-layered “skin” of the cell Just like our skin holds us together, the cell membrane holds the cell and its components together It also allows the movement of substances into and out of the cell. 9 Controls the cell – akin t our brains controlling us Holds the genetic material (DNA) which is stored on Chromosomes Directs activities of the cell Usually one per cell, some cells have several (muscle) while other have none (Red Blood Cell) Spherical in shape 10 DNA of eukaryotes is divided into linear chromosomes. ◦ Contains all the information needed for life (genes) ◦ We have 23 pairs = 46 totalTotal, half from mom and half from dad 11 • " Powerhouse of the cell" – Uses Glucose to provide cells with energy (Cellular Respiration) Glucose + Oxygen Carbon Dioxide + Water + Energy • • Cells that use a lot of energy have more Structure - outer and inner membranes 12 ◦ Network of transportation tubes which transport cellular substances around the cell (akin to a subway network transporting people from place to place) 13 ◦ _________________ ◦ Create and secrete mucus which is used as lining for the intestine and stomach 14 _________________ Contain unwanted substances for removal Maintaining internal pressures (Plant) 15 _________________ _________________ _________________ 16 •Chloroplasts are larger and more complex than mitochondria •Contain chlorophyll which gives plants their green colour and also allows them to absorb light to be used to create sugar in the process of photosynthesis 17 _________________ Carbon Dioxide + Water + Light Energy Glucose (Sugar) + Oxygen Photosynthesis Intro Video 18 Within plant cells, photosynthesis takes place to produce glucose (sugar) The sugar is then used within the mitochondria (cellular respiration) of both plants and animals How do the animals obtain the glucose? 19 Photosynthesis Glucose + Oxygen Carbon Dioxide + Water + Energy Carbon Dioxide + Water + Light Energy Glucose (Sugar) + Oxygen Cellular Respiration It’s a Cycle!! The products of photosynthesis are the reactants of cellular respiration The products of cellular respiration are Are the reactants of photosynthesis YOU CAN’T HAVE ONE WITHOUT THE OTHER!! 20 Plant cells usually have one large vacuole Maintains the cells pressure keeps the plants stems and leaves firm _________________ 21 Found just outside the cell membrane in plant cells _________________ _________________ 22 http://cellsalive.com/cells/cell_model.htm 23