Biophysics Exam 25.02.2021

Sheet 1:

  1. What is the numerical aperature of an objective?
  2. Functional steps of gene expression (from gene to protein)
  3. What is an enzyme? Give an example + describe

Sheet 2:

  1. Principle of magnetic lens
  2. Electron focusing of proteins, mobility of proteins at pH-values
  3. What is a) permittivity b) dispersion range c) dispersion frequency?
    On what are b) and c) depending?

Sheet 3:

  1. Action potential: draw + describe
  2. Signal transmission at excitatory chemical synapse
  3. 3 different types of ion channels existing in neuron + example

Sheet 4:

  1. Explain the electrical field properties in cell membrane under the influence of an external electrical and the dependency of the effect from the frequency
  2. Complex permittivity: definition + draw of frequency response curve
  3. Effect of non-ionizing radiation