Archivo de la categoría: Senior 2 2016

These are the topics you will be tested on. Chapter 3. Movement in and out of cells. Diffusion. Diffusion and living organisms. Diffusion of oxygen into a cell. Osmosis. Cell membranes. Osmosis and animal cells. Osmosis and plant cells. Active … Sigue leyendo →

In this chapter we shall learn about diffusion osmosis why diffusion and osmosis are important to cells and organisms active transport Let´s start by watching the following video… And now, a little bit more… And for revision What have we … Sigue leyendo →

These are the  contents you will be tested on : Classification. Characteristics of living things. Classification. The kingdoms of living organisms. Viruses. Classifying animals. Classifying plants. Keys. Cells. Cell structure. Cells and organisms. Source: Biology Book, chapters 1 and 2, … Sigue leyendo →

In the lab, we tested a leaf for starch. We followed instructions as described on page 65 ( Biology Book) And these are the results we obtained with some of the leaves we tested.

  If they can reproduce…why is it then, that they are not considered living organsims?

Pay attention to this video, before drawing your conclusions, when testing Coke, vinegar, sodium bicarbonate and soap solution with red and blue litmus paper… And if you want to make your own litmus paper at home…      

In the lab, we worked with food tests, finding starch, reducing sugars, proteins and lipids in different foods.   Emulsion Test This test allows us to see if there are lipids present in foods. We tested ccokies and fried potatoes..both … Sigue leyendo →

Try these exercises to practise how to use dichotomous keys to identify organisms http://igbiologyy.blogspot.com.ar/2012/11/12-using-simple-keys.html http://www.bbc.co.uk/education/guides/zbrmn39/test   And you may find these resources useful  to revise classification of living organisms as well!! ( info on other invertebrates : annelids, molluscs and … Sigue leyendo →

Biology https://cadem.cumbresblogs.com/2016/05/13/contents-for-may-term-tests/These are the contents you will be tested on Book, chapter 19: Selection, Natural and Artificial Selection. Genetic and Environmental Variation. Continuous and discontinuous variation. Mutations, factors that increase mutations. Charles Darwin and the Theory of Natural Selection. Practical … Sigue leyendo →