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Edexcel A-Level Biology AS 3.8 Core Practical 5 Animal Cells and Scale Questions

Calibrate at the stated magnification with a stage micrometer, count eyepiece units across the structure and convert units before calculating or drawing to scale.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Calibrate an eyepiece graticule against a stage micrometer at the same magnification.
  • Calculate cell size, volume or ratios after converting millimetres, micrometres and nanometres.
  • Produce a clear biological drawing with continuous lines, labels and scale information.

Edexcel A-Level Biology AS 3.8 Core Practical 5 Animal Cells and Scale Questions question 1

[Maximum number: 3]

A student used a microscope to study the tissues in a plant stem and the cell of an animal.

The photograph shows a vascular bundle in a transverse section of the plant stem, as seen using a light microscope.

Figure for Question Edexcel A-Level Biology AS 3.8 Core Practical 5 Animal Cells and Scale Questions question 1 — Edexcel A-Level Biology AS

The photograph shows an animal cell. This photograph was taken using an electron microscope.

Figure for Question Edexcel A-Level Biology AS 3.8 Core Practical 5 Animal Cells and Scale Questions question 1 — Edexcel A-Level Biology AS

Draw this cell as the student would see it under high power of a light microscope.

Label your diagram to show the nucleus, the nucleolus and the nuclear envelope.

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