# Biophysics I

## Overview

Failed attempt at swimming at low Reynolds number.

Vorticella stem contracting very rapidly to avoid dragging objects with it.

The aim of this course is to introduce students with a background
in mathematics and elementary physics to the world of cells.

## Lecture notes and problems

A guide to Biophysics and BiomathematicsLecture notes for Biophysics 2011/2012 last version 8 December 2009 |

You are strongly encouraged to consult some of the
recommended books, and especially the problems in them, in
addition to these lecture notes. At the very least, have a look
at the problems in the free web version of Nelson's book.

Suggested problems in Nelson's book: 1.1, 4.3, 4.4, 5.1,
5.4, 5.5, 6.2, 6.3, 7.1, 7.3, 7.5, 8.4. Suggested "Your Turn"
problems: 1a, 6c, 6e, 6f, 8d, 8e.

## Video recordings

Video recordings of lectures in 2009Hosted by the IPPP. The course in 2011/12 will be similar to these lectures, with some small modifications and additions. |

## Schedule

week | day | content |
---|---|---|

1 | Thursday October 6 | Introduction, tour of the biological problems |

1 | Tuesday October 11 | Thermodynamics intro, entropy, temperature |

2 | Thursday October 13 | Entropy of ideal gas, first law, reversibility |

2 | Tuesday October 18 | Efficiency, free energy |

3 | Thursday October 21 | Boltzmann distribution |

3 | Tuesday October 25 | Osmosis. Try Nelson's problems 1.1 and 6.2. |

4 | Thursday October 27 | Reaction rates |

4 | Tuesday November 1 | Depletion forces |

5 | Tuesday November 3 | Random walks and diffusion |

7 | Tuesday November 15 | Viscosity and friction |

7 | Thursday November 17 | Reynolds number |