RP5 - Dissection of animal or plant gas exchange system or mass transport system or of organ within such a system.

List 8 precautions that should be followed when performing a dissection

1. Cover any cuts with a waterproof dressing
2. When using a scalpel, cut away from body onto a hard surface
3. When using a scalpel, use a sharp blade
4. When using a scalpel, carry with blade protected / pointing down
5. Wear disposable gloves and disinfect hands / wash with soap
6. Disinfect surfaces / equipment
7. Safe disposal - put gloves, paper towels, organ in a separate bin to dispose
8. If poisonous chemicals / toxins involved, work in a well ventilated environment

Suggest an ethical consideration when dissecting animals

it is morally wrong to kill animals just for dissection so use animals for dissection that have already been killed (humanely) for meat

Describe how you could prepare a temporary mount of a piece of plant tissue for observation with an optical microscope

1. Add a drop of water to glass slide
2. Obtain a thin section of specimen and place on slide
3. Stain (eg. with iodine / potassium iodide to view starch)
4. Lower coverslip at angle using mounted needle without trapping air bubbles

rules for scientific drawings

1. no sketching - use only clear continuous line
2. no shading
3. include magnification scale bar
4. add labels/ annotations with straight uncrossed line
5. ensure proportions are correct so it looks similar to image