Investigate and describe the effects on plant tissues of immersing them in solutions of different concentrations
1 Answer State that water moves into and out of cells by osmosis through the cell membrane
1 Answer State that water diffuses through partially permeable membranes by osmosis
1 Answer Describe the importance of diffusion of gases and solutes in living organisms
1 Answer State that some substances move into and out of cells by diffusion through the cell membrane
1 Answer State that the energy for diffusion comes from the kinetic energy of random movement of molecules and ions
1 Answer Describe diffusion as the net movement of particles from a region of their higher concentration to a region of their lower concentration (i.e. down a concentration gradient), as a result of their random movement
1 Answer Calculate magnification and size of biological specimens using millimetres as units
1 Answer State and use the formula: magnification = image size ÷ actual size
1 Answer Describe the meaning of the terms: cell, tissue, organ, organ system and organism as illustrated by examples given in the syllabus
1 Answer
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