More Biological Molecules

DNA and RNA

• DNA ia used to store genetic information
• RNA is used to transport genetic information
• They're both polymers of nucleotides
• Nucleotides have a pentose sugar, phosphate and nitrogen containing organic base
• Phosphodiester bonds form between phosphate groups and pentose sugars to create strands of nucleotides
• DNA has a deoxyribose sugar
• RNA has a ribose sugar and rather than thymine is has uracil

DNA replication

• DNA copies itself before cell division so that each new cell has full DNA. This is semi-conservative replication.
• DNA helicase breaks the hydrogen bonds between complementary bases, making two single strands
• Each original strand acts as a template…