PENSUM

Questions

1. Describe the components of the cell by structure and functions
   


2. Describe the processes in mitosis and meiosis



3. Describe the chemical- and stereo-structure of a phospolipid
   Describe the chemical- and stereo-structure of a DNA molecule
   


4. Describe the chemical- and stereostructure of a protein



5. Derive the average position and root mean square value of a particle in a one-dimensional walk



6. Derive the relation between the friction- and diffusion coefficient for a particle in viscous medium



7. Derive the expression for the potential energy stored in two electrical dipoles with parallell orientation at a distance r



8. What is osmosis? Give or derive an expression for the osmotic pressure between two compartments seperated by a semipermeable membrane



9. Write down the expression for the chemical potential of a substance
   What is the physical meaning of the chemical potential? Derive an expression for the Nernst potential



10. Chemical energy is stored in a molecule called adenosintriphosphate (ATP)
    a: What is the chemical structure of ATP?
    b: Write down the chemical reaction releasing the chemical energy.
    c: What is the law of mass action? Explain why the standard Gibbs free energy is positive in this case.



11. Give an overall picture of the respiration processes and the transfer efficiency of hemical energy from glucose to ATP. Explain the major steps in oxydative phosphorylation



12. What is an enzyme? Derive the expression for the rate of product formation in enzyme catalysis



13. Describe the steps in DNA replication.
    
    
14. Describe the steps of transcription and translation in protein synthesis.
    What is the meaning of the genetic code?