Ellie's Biology Crossword

1234567891011121314151617181920212223242526
Across
  1. 2. a compound that is one of the four constituent bases of nucleic acids. A pyrimidine derivative, it is paired with adenine in double-stranded DNA.
  2. 3. a compound that is one of the four constituent bases of nucleic acids. A purine derivative, it is paired with thymine in double-stranded DNA.
  3. 6. a sugar derived from ribose by replacing a hydroxyl group with hydrogen.
  4. 9. polymerase an enzyme that is responsible for making RNA from a dna template.
  5. 11. a sequence of three nucleotides forming a unit of genetic code in a transfer RNA molecule, corresponding to a complementary codon in messenger RNA.
  6. 12. microarray also commonly known as DNA chip or biochip is a collection of microscopic DNA spots attached to a solid surface.
  7. 13. pairing any of the pairs of the hydrogen-bonded purine and pyrimidine bases that form the links between the sugar-phosphate backbones of nucleic acid molecules: the pairs are adenine and thymine in DNA, adenine and uracil in RNA, and guanine and cytosine in both DNA and RNA.
  8. 17. Group it is attached to a molecule containing carbon and it is found in the genetic material DNA and RNA, and is also in molecules such as adenosine triphosphate (ATP) that provide energy to cells.
  9. 18. therapy the transplantation of normal genes into cells in place of missing or defective ones in order to correct genetic disorders.
  10. 19. a written or printed representation of something.
  11. 20. a sequence of three nucleotides that together form a unit of genetic code in a DNA or RNA molecule.
  12. 23. a compound found in living tissue as a constituent base of nucleic acids. It is paired with guanine in double-stranded DNA.
  13. 24. chain reaction or PCR, is a laboratory technique used to make multiple copies of a segment of DNA.
  14. 26. an enzyme that brings about ligation of DNA or another substance.
Down
  1. 1. a compound that occurs in guano and fish scales, and is one of the four constituent bases of nucleic acids. A purine derivative, it is paired with cytosine in double-stranded DNA.
  2. 2. relating to or denoting an organism that contains genetic material into which DNA from an unrelated organism has been artificially introduced.
  3. 4. the action of copying or reproducing something.
  4. 5. a molecular component of a ribosome, the cell's essential protein factory. It makes polypeptides (assemblies of amino acids) that go to make up proteins.
  5. 7. Small RNA molecules that carry amino acids to the ribosome for polymerization into a polypeptide.
  6. 8. an enzyme that synthesizes short RNA sequences called primers.
  7. 10. DNA DNA that has been formed artificially by combining constituents from different organisms.
  8. 14. enzyme an enzyme produced chiefly by certain bacteria, having the property of cleaving DNA molecules at or near a specific sequence of bases.
  9. 15. a laboratory or department responsible for tests used in detection of crime.
  10. 16. Modified of an organism or crop containing genetic material that has been artificially altered so as to produce a desired characteristic.
  11. 21. a genetic structure in a cell that can replicate independently of the chromosomes, typically a small circular DNA strand in the cytoplasm of a bacterium or protozoan. Plasmids are much used in the laboratory manipulation of genes.
  12. 22. an organism or cell, or group of organisms or cells, produced asexually from one ancestor or stock, to which they are genetically identical.
  13. 25. a subtype of RNA. A molecule that carries a portion of the DNA code to other parts of the cell for processing.