Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

8 Cards in this Set

  • Front
  • Back
2 ways to make nucleotides:
-De novo
What small molecules are used to make nucleotides?
-Amino acids
What are the versions of nucleotides that exist in circulation?
-Free base
What is a nucleoside?
Base + pentose sugar
What is a nucleotide?
Base + pent sugar + phosphate
2 types of bases:
Where does numbering start in Purines? In what direction does it go?
10 o'clock - counterclockwise
Where does numbering start in Pyrimidines? In what direction does it go?
6 o'clock - clockwise