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DNA Review

DNA Review. What does DNA stand for?. Deoxyribonucleic Acid. What is located at the BOTTOM of a tRNA molecule?. Anti- codon sequence. Where in the cell is DNA found?. Nucleus. Scientifically, describe the shape of the DNA molecule. Double Helix.

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DNA Review

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  1. DNA Review

  2. What does DNA stand for? • Deoxyribonucleic Acid

  3. What is located at the BOTTOM of a tRNA molecule? • Anti-codon sequence

  4. Where in the cell is DNA found? • Nucleus

  5. Scientifically, describe the shape of the DNA molecule. • Double Helix

  6. What is the complement to this side of a DNA molecule?:TGGACTA • ACCTGAT

  7. How many pairs of chromosomes does a human have in their body cells? • 23

  8. Where can mRNA be found? • Nucleus, cytoplasm, ribosome

  9. A segment of DNA that codes for a protein is called a ______ • Gene

  10. What are the 3 parts of the DNA molecule? • Phosphate group • Deoxyribose Sugar • Nitrogen Base

  11. What sugar is present in RNA? • ribose

  12. What nitrogen bases are present in RNA? • A, U, C, G

  13. What is chromatin? • Uncoiled DNA

  14. What type of bond holds together the nitrogen bases? • Hydrogen

  15. What scientists are credited with the “base-pairing” rules? • Watson & Crick

  16. DNA that is coiled would be called? • Chromosome

  17. When does the DNA replicate? • Cell division/Interphase (before mitosis)

  18. Going from mRNA to a protein is called _______. • Translation

  19. During DNA replication, what causes the hydrogen bonds to break? • An Enzyme

  20. What is the tRNA complement to this mRNA?:AUGCAU • UACGUA

  21. What polymer makes up or hair color, bone length, etc..? • Protein

  22. What is the shape of mRNA? • Single helix

  23. What is the function of tRNA? • tRNAanticodons bond w/ mRNA codons to insure the correct order of amino acids

  24. What sugar is present in DNA? • Deoxyribose

  25. What does RNA stand for? • Ribonucleic Acid

  26. How many strands of mRNA are transcribed from the two “unzipped” strands of DNA? • 1

  27. What nitrogen bases are present in DNA? • A, T, C, G

  28. How is the accuracy of the DNA code assured? • Base-pairing rules

  29. Going from DNA to mRNA is called _________. • Transcription

  30. What is the mRNA complement to this side of a DNA molecule:AACGTAT • UUGCAUA

  31. How does the mRNA get out of the nucleus? • Nuclear pore

  32. Identify this molecule. • DNA

  33. What is located at the TOP of a tRNA molecule? • Amino acids

  34. Where does translation occur? • Ribosome

  35. What is the function of mRNA? • To get the DNA code out of the nucleus

  36. What are proteins made up of? • Amino acids

  37. Where must the mRNA attach before protein production can begin? • Ribosome

  38. Where does transcription occur? • Nucleus

  39. Identify this molecule. • tRNA

  40. How many nitrogen bases make up a mRNA codon? • 3

  41. What type of bond is formed between amino acids during translation? • Peptide bond

  42. Identify this molecule. • mRNA

  43. What is the function of rRNA? • Creates peptide bonds between the amino acids

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