| Front | Frame quadrat |
| Back | square frame divided by string or wire into smaller subdivisions, the quadrat is placed in different locations within the area being studied. Abundance of each species within the quadrat is recorded. |
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| Front | Describe experiment for permeability of cell membranes |
| Back | 1. cut 5 equally sized beetroot pieces using a scalpel, rinse to remove any pigment2. add the 5 pieces to 5 test-tubes and add 5cm3 of water using a pipette or measuring cylinder3. place each test tube in a water bath at different temperatures (10,20,30,40,50) for the same length of time4.Remove the pieces of beetroot leaving the liquid leftover5. use a colourimeter to measure the amount of light passing through the liquid, calibrate using pure water. |
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| Front | synpatic knob |
| Back | contains synaptic vesicles filled with chemicals called neurotransmitters |
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