Biology 9700 Practical Notes [verified] ★ Instant & Popular

These are low-power drawings. Use a sharp HB pencil, draw unbroken lines , and do not draw individual cells. Focus on tissue layers like xylem, phloem, and epidermis.

Factors that must be kept constant to ensure a fair test (e.g., enzyme volume, constant incubation temperatures). biology 9700 practical notes

A slide with a known, accurate scale (usually 1 mm total length, divided into 100 small divisions of 0.01 mm or 10 µm each). Step-by-Step Calibration Procedure Insert the stage micrometer and focus under low power. These are low-power drawings

Used to decrease concentrations exponentially by a constant factor (e.g., 10%, 1%, 0.1%, 0.01%). Example (Factor of 10): Transfer of a 100% stock solution into a test tube containing Factors that must be kept constant to ensure a fair test (e

Choose a scale where the plotted points occupy more than half of the grid area. Use sensible intervals (e.g., 1s, 2s, 5s, or 10s). Plotting: Use a sharp pencil to make small marks or a dot surrounded by a small circle ⊙circled dot