Biology  by Bradford
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D1.1 DNA replication: grass skirts

19 quick questions on dna replication, 12 of them at standard level, each answered in a word or two. Print a sheet for each team, a key for the checker and a tick sheet, then tape the sheets to the board and race.

How it runs

  1. SnipA runner cuts one strip off the bottom of their team’s sheet.
  2. Answer as a pairBack at the table, they write the answer on the strip. No books.
  3. Get it checkedThe checker reads it against the key: you, or a student holding it.
  4. Back for the nextA tick earns the next strip. Wrong? Back to the table to try again.

The questions on this sheet

The checker’s key, with every answer, prints with the sheets.
  1. Copying DNA before a cell divides
  2. A pairs with T, C pairs with G
  3. Enzyme that unzips the double helix
  4. Enzyme that copies each parent strand
  5. Copies a tiny DNA sample millions of times
  6. Sorts DNA fragments by size using current
  7. Matching band patterns to identify people
  8. Each new DNA molecule keeps one old strand
  9. Heat-stable enzyme of hot-spring bacteria
  10. Short strand where DNA copying starts
  11. Heating to 95 °C to separate the strands
  12. Cooling step so short starters bind to DNA
  13. Y-shaped point where the helix opens
  14. Copy made continuously, toward the fork
  15. Copy made discontinuously, away from fork
  16. Short piece of new DNA, later joined up
  17. Enzyme that seals nicks between fragments
  18. Removing mismatched bases as DNA is copied
  19. Enzyme that lays short RNA starters

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