Crossword puzzle - Biology

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Across
  1. 4. This process helps to maintain the constant level of the internal environment.
  2. 5. The ability to respond to stimuli from both internal and external environments.
  3. 6. Most prominent organella of an eukaryotic cell.
  4. 10. Synthesis of ATP using solar energy in photosynthesis.
  5. 12. This enzyme is produced by Saccharomyces cerevisiae.
  6. 14. The structural and functional unit of the kidney.
  7. 16. It is a sugar molecule formed by joining two monosaccharides by a glycosidic bond.
  8. 17. Two amino acids undergo condensation reaction by removing a water molecule from both and result a bond known as _____ bond.
  9. 18. The ability to produce offspring for continuous existence of species.
  10. 19. An alteration of the nucleotide sequence of the genome of an organism.
  11. 20. This organella helps to synthesise ATP in aerobic respiration.
Down
  1. 1. Catalysing enzyme of below reaction. Nucleotides ----> Nitrogenous bases + sugars + phosphates.
  2. 2. What is the neurotransmitter which is secreted by the parasympathetic division?
  3. 3. It includes catabolic and anabolic reactions.
  4. 7. Another name for the red blood cells.
  5. 8. Copying a sequence of DNA into mRNA.
  6. 9. This virus is transmitted by Aedes aegypti and Aedes albopictus.
  7. 11. How many steps does the cardiac cycle have?
  8. 13. This may be caused by long - term exposure to dust containing silica compounds.
  9. 15. Union of egg and sperm culminating in fusion of their nuclei.