Biology Chapter 12

Card Set Information

Author:
Henri93
ID:
198228
Filename:
Biology Chapter 12
Updated:
2013-02-06 21:14:50
Tags:
Biology Chapter 12
Folders:

Description:
Biology Chapter 12
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Henri93 on FreezingBlue Flashcards. What would you like to do?


  1. the process in which one strain of bacteria is changed by a gene or genes from another strain of the bacteria.
    Transformation
  2. A type of virus that infects bacteria
    bacteriophage
  3. the nearly perfect fit between A-T and C-G
    Base pairing
  4. Chargaff's Rule
    [A]=[T]    [G]=[C]
  5. the partner of Adenine
    Thymine
  6. the partner of Guanine
    Cytosine
  7. the process of copying DNA prior to cell division. Occurs during the 'S'phase
    Replication
  8. An enzyme that joins individual nucleotides to produce a new strand of DNA.
    DNA Polymerase
  9. An enzyme that breaks down the hydrogen bonds in DNA. It 'unzips' the DNA.
    Hellicase
  10. DNA at the tips of the chromosomes
    Telomeres
  11. An enzyme that adds short, repeated DNA sequences to the telomeres. In rapidly dividing cells, such as stem cells, it helps to prevent genes from being damaged or lost during replication.
    Telomerase
  12. By observing bacterial transformation, Avery and other scientists discovered that the nucleic acid DNA stores and transmits genetic information from one generation to the next.
    TRUE
  13. Hershey and Chase's experiment with bacteriophages confirmed Avery's results, convincing many scientists that DNA was the genetic material found in genes - not just in viruses and bacteria but in all cells.
    TRUE
  14. The DNA that makes up genes must be capable of storing, copying, and transmitting the genetic information in the cell.
    TRUE
  15. DNA is a nucleic acid made up of nucleotides joined into long strands or chains by covalent bonds
    TRUE
  16. The clues in Franklin's X-ray pattern enabled Watson and Crick to build a model of DNA that explained the specific structure and properties of DNA.
    TRUE
  17. The double helix model explains Chargaff's rule of base pairing and how the two strands of DNA are held together.
    TRUE
  18. DNA polymerase is an enzyme that joins individual nucleotides to produce a new strand of DNA.
    TRUE
  19. Replication in most prokaryotic cells starts from a single point and proceeds in two directions until the entire chromosome is copied.
    TRUE
  20. In eukaryotic cells replication may begin at dozens or even hundreds of places on the DNA's molecule, proceeding in both directions until each chromosome is completely copied.
    TRUE
  21. nitrogenous bases that have 2 rings and are called 'Purines'.
    Adenine and Guanine
  22. nitrogenous bases that have 1 ring and are called 'Pyrimidines'.
    Cytosine and Thymine
  23. The building blocks of DNA are
    Nucleotides
  24. nucleotides in DNA are made up of three basic components:
    • a sugar called Deoxyribose
    • a phosphate
    • and a nitrogenous base
  25. in DNA,----- can be joined in any order
    nucleotides
  26. The nucleotides in DNA are joined by 
    Covalent Bonds
  27. Who used X-ray diffraction studies to reveal the double helix structure of DNA.
    Rosalind Franklin
  28. Why is important for DNA to store information
    the genetic material stores information needed by every living organism
  29. why is it important for DNA to copy its information
    before a cell divides its genetic information must be copied.
  30. Why is it important for DNA to transmit its information
    When a cell divides each daughter cell must receive a complete copy of the genetic information. 
  31. Which structure of DNA allows it to store information
    The sequence of the covalent bonds
  32. Which structure of DNA allows it to copy info
    The base pairs
  33. Which structure of DNA allows it to transmit info
    The Hydrogen Bonds
  34. What did Fredrick Griffith conclude
    he concluded that bacteria contains a molecule that can be transfer genetic info from cell to cell.
  35. What did Oswald Avery conclude
    he concluded that the molecule Griffith discovered is DNA
  36. What did Hershey and Chase conclude
    They concluded that the genetic material was DNA not a protein.

What would you like to do?

Home > Flashcards > Print Preview