Biology 9700 Practical Notes Free Review

Question 1 typically focuses on enzymes, biological molecules, or cell membranes. Success here depends on your ability to handle solutions and variables correctly. Serial vs. Simple Dilutions Simple Dilution

You will usually get a plant stem (T.S.) or an animal tissue.

To excel in the practical component of Biology 9700, students need to be familiar with the following key concepts and techniques: biology 9700 practical notes

Paper 3 is a two-hour laboratory-based exam typically consisting of two questions. Important tips to help you ace paper 3 - clearer recording

A stepwise dilution of a substance in solution. A constant dilution factor is used at each step (e.g., a 10-fold serial dilution takes 1 mL of stock into 9 mL of water, then 1 mL of that mixture into the next 9 mL of water). 4. Preparing High-Quality Biological Drawings Simple Dilutions Simple Dilution You will usually get

A major portion of the analytical marks in Paper 3 is assigned to evaluating experimental design. You must distinguish between human mistakes and systematic experimental limitations. Common Limitations and Improvements Judging color changes visually is subjective.

An eyepiece graticule has arbitrary units and must be calibrated against a stage micrometer (which has known, real dimensions, typically 0.1 mm or 0.01 mm per division). A constant dilution factor is used at each step (e

For Paper 5, if you are given a table of results and asked to analyze the trend, do this:

Measure changes in mass, length, or the percentage of plasmolysed cells under a microscope.

is on the y-axis. Use at least half of the provided grid and plot points with small, sharp crosses. Significant Figures

Paper 5 tests your ability to think like a scientist without setting foot in a lab. It is divided into planning an experiment and analyzing data.