German Abitur · Biology

Cell Biology, Metabolism and Genetics

27 practice questions, each with the answer and an explanation.

Practise Cell Biology, Metabolism and Genetics now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 27 questions

  1. Which organelle is the main site of ATP production in eukaryotic cells?
  2. Which base pairs with adenine in DNA?
  3. What is the plant cell wall mainly made of?
  4. Where in the chloroplast do the light-dependent reactions of photosynthesis take place?
  5. What happens to red blood cells placed in a hypotonic solution?
  6. What does a competitive inhibitor do to an enzyme?
  7. What is the main role of the sodium-potassium pump in a neuron?
  8. What triggers the release of neurotransmitter at a chemical synapse?
  9. Which statement about net glycolysis per glucose molecule is correct?
  10. How does the Calvin cycle first fix carbon dioxide?
  11. Which hormone is released by pancreatic beta cells and lowers the blood glucose level?
  12. Which type of cell produces antibodies?
  13. Why does a vaccination provide active immunity?
  14. Two heterozygous parents () have offspring. What is the genotype ratio?
  15. What is the phenotype ratio of a dihybrid cross $AaBb \times AaBb$ with complete dominance and independent genes?
  16. In a population in Hardy–Weinberg equilibrium, of individuals show a recessive trait (). What percentage are heterozygous carriers?
  17. In which phase of meiosis does crossing over occur?
  18. Which organelles carry out translation?
  19. What is the function of DNA helicase during replication?
  20. Starting from one DNA molecule, how many copies exist after five complete PCR cycles?
  21. In the lac operon, what happens when lactose is present and glucose is absent?
  22. A woman is a carrier of an X-linked recessive disease and her partner is unaffected. What is the probability that a son is affected?
  23. Which chromosomal change causes Down syndrome?
  24. What is the role of restriction enzymes in genetic engineering?
  25. What is a plasmid used for in genetic engineering?
  26. In gel electrophoresis, which way do DNA fragments move, and which travel farthest?
  27. What is the usual effect of DNA methylation at a gene promoter?

Keep practising

More German Abitur topics

All German Abitur practice →

Cell Biology, Metabolism and Genetics in other exams

Ready for the full German Abitur test?

Take a mock testGerman Abitur hub