DNA Structure

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Author:
shelbyrenee
ID:
9940
Filename:
DNA Structure
Updated:
2010-03-15 15:22:46
Tags:
Biology dna rna
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Description:
DNA/RNA
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  1. Where does Translation occur?
    In Ribosomes
  2. What is the role of tRNA?
    To get the Amino Acids.
  3. What does the start codon ALWAYS code for?
    Methanine
  4. How many possible combosof amino acids are there?
    64
  5. How many amino acids are there?
    20
  6. What are the building block of DNA?
    • 5 carbon sugar
    • phosphate group
    • nitrogous base
  7. During transcription DNA is changed into what molecule?
    mRNA
  8. name the 3 letters?
    • tRNA
    • mRNA
  9. Whata re the 3 types of mutations?
    • Deletion
    • Duplication
    • Substitution
  10. What are the 2 frameshift mutations?
    Deletion & Duplication
  11. Where does DNA replication occur?
    Nucleus
  12. Difference between DNA & RNA?
    • DNA RNA
    • * 2 strands * Ribonucleic Acid
    • * Thymine * Uracil
    • * Stays in nucleus * Moves out of nucleus

  13. Copy of DNA that is smaller and able to leave the nucleus?
    mRNA
  14. Principal enzyme that is involved in transcription?
    RNa Polymerce
  15. Where transcription occurs?
    Nucleus
  16. What does DNA Polymerce do?
    It replicates DNA
  17. DNA is coped before what process?
    Mitosis
  18. Where is DNA located?
    Nucleus
  19. Is DNa small enough to leave the cell?
    Nope
  20. what is another name for the double helix?
    "Twisted Ladder"
  21. What are the 2 parts of DNA?
    • Intron
    • &
    • Exron
  22. What is important about intron?
    • It is important because
    • It lessens the chance of mutations.
  23. What is it valled when there is an ability to turn genes on and off?
    Gene Regulation
  24. DNa is a polymer of these molymers?
    Nucletide
  25. What is another name for proteins?
    Polypeptide chain
  26. What does translation produce?
    Proteins.
  27. What are the building blocks of proteins?
    Amino Acids
  28. What do codons bind to?
    A 3 letter sequence of RNA
  29. What do anti codons bind to?
    They bind to codons.
  30. In DNA if you know one sind of the molecule, then you know the other. What is this called?
    Complementary
  31. What does helicase do?
    It is an enzyme that "unzips" the original DNA
  32. What does DNA Polymerace do?
    It is the enzyme that adds new complementary base nucleotides to the open bases. the "glue
  33. Transcription
    DNA info to mRNA
  34. Translation
    mRNA determines the protein

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