1. 4.1 Cell Biology
Lesson 2

2. Baseline (flightpath D): Sort objects by
their relative sizes and observe some of these objects
under a microscope.
Further (flightpath C): Observe cheek cells under a microscope and explain parts of the procedure.
Challenge (flightpath B&A): Calculate the sizes of a variety of cells using the magnification calculation triangle and complete some basic unit conversions.

3. chromosome cell organ atom nucleus mitochondria gene
Put the words on the
right into size order
from the smallest to
The largest.
organ
atom
nucleus
mitochondria
gene

4. Animal and plant cells videos:

5. Exam prep Ask for help now if you need it!
Remember you need to be able to apply your
Knowledge in an exam situation!
If you struggle to answer this question now,
how will you find it in two years time when
you sit your exams?
Ask for help now if you need it!

6. Exam prep Ask for help now if you need it!
Remember you need to be able to apply your
Knowledge in an exam situation!
If you struggled to answer this question now,
how will you find it in two years time when
you sit your exams?
Ask for help now if you need it!
 (i)      cytoplasm (cell) membrane nucleus
all correctly labelled each for 1 mark 3
(ii)      0.5
gains 2 marks (5/100 × 10 or ½ /1 gains 1 mark if 0.5 not given) 2
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