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13 Cards in this Set
- Front
- Back
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What is DNA?
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what enables cells to have different forms and to perform different functions.
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Primary functions of DNA?
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to store and transmit genetic information.
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DNA is made up of?
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repeating subunits.
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3 Parts of a nucleotide?
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Deoxyribose, Nitrogen-Containing Base, and Phosphate group.
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4 Nitrogen Bases?
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adenine, guanine, cytosine, and thymine.
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who first described structure?
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James Watson and Francis Crick.
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Shape of DNA?
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double spiral staircase, called a double helix.
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Backbone?
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alternating deoxyribose sugar and phosphate molecules form a "backbone" to which the nitrogen-containing bases attach.
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Helicases?
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chains seperated by enzymes.
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Polymerases?
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enzymes called "polymerases" bind to the seperate chains of DNA.
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Mutation?
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change in the DNA sequence.
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What is RNA?
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a nucleic acid made up of repeating nucleotides.
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RNA and DNA differ?
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in their structure, and RNA nucleiotide carries uracil that usually replaces thymine.
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