Biology 9700 Practical Notes //top\\ | Extended
Paper 3: AS Practical Skills
The Cambridge International AS & A Level Biology (9700) practical assessments, primarily Paper 3 (AS) and Paper 5 (A2), test your experimental skills rather than just theoretical knowledge .
- Magnification vs. Resolution: Magnification makes it bigger; resolution makes it clearer. Light microscopes max resolution ~200 nm.
- Calibration: You must know how to calibrate an eyepiece graticule using a stage micrometer.
- Burettes: Read to the bottom of the meniscus. Record to two decimal places (e.g., 24.50 cm³, not 24.5 cm³). The last digit is an estimate.
- Pipettes: Usually fixed volume (e.g., 25.0 cm³).
- Calculations: Your final answer should match the lowest number of significant figures in the data used, or follow the specific instruction in the question (usually 3 s.f. is a safe bet if not specified).
The Biology 9700 practical notes provide a comprehensive guide to the practical component of the Cambridge International A-Level Biology examination. By mastering key concepts, techniques, and tips for success, students can build confidence and proficiency in practical biology and achieve success in their exams. Regular practice, attention to detail, and a thorough understanding of laboratory safety procedures and equipment are essential for success in the practical component. biology 9700 practical notes
By following these practical notes and techniques, and by practicing with past papers and practical investigations, students can gain the skills and confidence they need to succeed in their Biology 9700 practical assessments. Paper 3: AS Practical Skills The Cambridge International
: Use a stage micrometer to find the value of one eyepiece graticule unit ( ) at a specific magnification. Magnification Formula A-Level Notes 3. Biological Drawings Magnification vs
2. Significant Figures and Units
This is the easiest way to lose marks.