Biology 9700 Practical Notes -

of solution from Tube 1 and transfer it to Tube 2. Mix thoroughly. (Tube 2 is now 5%). cm3c m cubed

Connect points with ruled, straight lines (dot-to-dot) unless told otherwise. 5. Identifying Sources of Error

| Test | When to use | | :--- | :--- | | | Counted categories (e.g., red vs. white flowers). Looking for association. | | Student's t-test | Comparing means of two groups (e.g., treated vs. untreated plant height). | | Spearman’s rank | Looking for correlation between two variables (e.g., temperature vs. enzyme rate). | biology 9700 practical notes

Draw straight, ruled label lines that end precisely on the targeted structure. Never allow label lines to cross over each other, and do not use arrowheads. Graph Plotting Architecture

: Adding different volumes of water to a stock solution to get specific ratios. of solution from Tube 1 and transfer it to Tube 2

Paper 3 always evaluates your skills with a light microscope, creating low-power plans, high-power detailed drawings, and executing mathematical scaling. Rules for Biological Drawings

Practical work for AS Level requires mastery in manipulating apparatus and making accurate observations. : cm3c m cubed Connect points with ruled, straight

You must be able to create a serial dilution. Remember the formula

Draw exactly what you see, not a textbook diagram. Maintain correct proportions between tissue layers.

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Line up the zero mark of the eyepiece graticule with a clear mark on the stage micrometer.