1. 10 CMH INTEGRATED SCIENCE THE ORGANISM AND ITS ENVIRONMENT CELLS Crated by Reynaldo Thomas

2. GENERAL OBJECTIVES At the end of this lesson students should :  Be cognizant that all organisms are made up from cell.  Be cognizant of unspecialized plant and animal cells.  Identify cell organelles. SPECIFIC OBJECTIVES At the end of this lesson students should be able to :  Tell the importance of cells.  Draw simple diagram of unspecialized cells in plant and animal.  Label and state the functions of each cell components.

3. The cell All organisms are made up of simple basic units called cells. Most cells are too small to be seen by the naked eye. Their structure only visible when viewed with a microscope.

4. The Structure of cells Organisms, such as bacteria and amoeba are unicellular, consisting of a single cell. They are able to carry out all the functions needed to sustain life. Example respiration, nutrition and Reproduction.

5. Most plants and animals are multicellular They have different types of cell organized into tissues and then organs. The cells are specialized to carry out specific functions.

6. The Structure of cells Animal cell Has a irregular shape Do not usually have vacuoles but if present, they are very small. Cell membrane surrounding the cell contents.

7. Plant cell Plant cells has a rectangular shape. Have all the components of Animal cells and other parts.

8. Cell Organelles  Forms the boundary between the cell contents and the surroundings.  Control the movement of substances into and out of the cell. Cytoplasm  All cell activities take place here.  Contains the cell organelles for example mitochondria and ribosomes.

9. Nucleus  This is where chromosomes are found  The nucleus controls the cell’s activities. Mitochondrion  This is where cellular respiration take place.  Where energy for cell activities are release.  Cells which are more active contain more mitochondria.

10. Cell wall  This is a non-living layer outside of plants cell membrane.  The cell wall allow substances to pass through it freely. Vacuole  Large in plant cells and contain water (cell sap).  Small and sometimes not permanent in animal cells.

11. Chloroplast  The green pigment chlorophyll is found in it.  This is where photosynthesis take place.  Not found in animal cells.

12. Differences Between Plant And Animal Cell Cell PartsAnimal cellPlant cell ShapeIrregular shapeRectangular shape Cell wallNo cell wallCell wall present Vacuolesmall vacuolelarge vacuole ChloroplastNo chloroplastChloroplast present ChlorophyllNo chlorophyllChlorophyll present

13. Specialized Cells In The Body While many cells make up simple body parts, such as tissues, some complete more complex and specialized tasks. These specialized cells are specially designed to perform the functions for which they are intended. Example red blood cells, white blood cells and nerve cells. Each of these cell types are formed and operate differently, ensuring that the cell can carry out the necessary body function that it is intended to complete. Example red blood cells, white blood cells and nerve cells.