What you will learn in The cell, to scale

1. 1. The deepest look

   Computing a real size from a micrograph, and finding where magnification stops helping.

2. 2. What a cell actually looks like

   The textbook cell diagram, corrected — and four specific things it gets wrong.

3. 3. Two kinds of cell

   Counting what prokaryotes and eukaryotes share before counting what they do not.

4. 4. The production line

   One protein through six organelles, and why they are one process.

5. 5. The powerhouses, and where they came from

   Five lines of evidence about mitochondrial origins, each as an elimination.

6. 6. The boundary

   What crosses a membrane, and why it is not about size.

7. 7. Why cells are small

   Two pieces of arithmetic that together explain the size limit, and what cells do about it.