The nature of the process and of the specialized structures developed for waste disposal vary greatly with the size and complexity of the organism.
Excretion is a general term referring to the separation and throwing off of waste materials or toxic substances from the cells
This shows excretion in Lower Organisms
This presentation is to enable students understand the cyclic nature of nutrients in the environment. It is for year 10 (SS 1) students. it comprises of Carbon cycle, Oxygen cycle, Water cycle and Nitrogen cycle.
For Year Ten Biology students, who needs to learn about microorganisms around us and the easiest way to culture.
Microorganisms around us
Methods of culturing
Identification and Differentiation of Microorganisms
Types of Culture Medium
Movement in and out of the cell
Diffusion - definition, process, significance, and importance
Osmosis - definition, process, experiment with living cells
Plasmolysis - definition and process
Heamolysis - definition and Process
The presentation will be useful for both teachers and student in teaching and learning Cellular respiration. It is best for ages 14-16 years.
At the end of the lesson the students will be able to:
Define cellular respiration
Define aerobic respiration
Explain Krebs Cycle