Historical_of_Development_of_Concept_of_Life.pptx

EALS 11

1. LIFE SCIENCE -is the study of all living organism. - it is also called "biology" Two types of life *Living Things *Non living things

2. ORGANISMS Is the interaction of environment.One of this substances is carbon dioxide. For example Marine organism.. Marine organisms is live in the ocean or sea. Cell Is the basic unit of life. The word cell comes from the Latin word " cellula"

3. Historical of Development of Concept of Life

4. There are no witness to the origin of life. However, there possible explanations that attempt to provide different possibilities on how life could have begun.

5. 1.) EXTRATERRISTIAL ORIGIN The hypothesis explains that life originated on another planet outside the solar system life was then carried to earth on a meteorites or asteroid and colonized earth.

6. 2.) PANSPERMIA The theory presumes that the ‘seed’ of life exists all over the universe and can be propagated through space, and that life on Earth originated from these seeds.

7. 3.) DIVINE CREATION Many people receive that life was put on Earth by Divine Forces. Creation Theories are common to many of the worlds religions and cultures.

8. 4.) ORIGIN FROM NON LIVING MATTER Scientist believe that life arose on Earth from inanimate matter after Earth had cold. The stated that random events probably produced stable molecules that could self –replicate. Then, natural selection flavored changes in the rate of reproduction, which eventually led to the first cell.

9. The Evolutionary history of life on Earth traces the processes by which living and Fossil organisms evolved, from the earliest emergence of life to the present.

10. Cellular Organization Is a membrane that move in and out. Metabolism Is a term that is to describe all chemical reactions. Atabolism - the breakdown of molecules to obtain energy. Anabolism- - the synthesis of all compounds needed by the cell. Homoestasis Maintain stable internal condition. Reproduction Values the transfer of genetic information from parents to offspring. Heredity The passing of genetic traits from parents to offspring. Cellular basis of life All organism are made of cell. Erythocytes Contain a protein called hemoglobin. Fat Cell Are the cells that primarilycomposed adipose tissue. Macrophage Type of WBC. Nerve cell Specialized cells designed to stimulate other cells in the body in order to communicate.

11. 3 Functional Classes *Unipolar Neurons Nerve cell that have one extension connected to some. *Afrent Involves the senses. *Bipolar Nervecells that have two projections. Epithelial Cells That come from surface of your body. Skeletal Muscle Cell Are syncytial structures comprised of organelles including the specialized. Smooth Muscle Cell Is composed of sheets or strands of smooth Muscle cells. RNA World Is a polymeric molecule essential in various biological. Sperm Cell Is the male reproductive cell.

12. Three main parts of sperm cell.