Chemistry A-Level
alternating backbone
What alternating backbone means in Chemistry A-Level, as defined for AQA.
Definition of alternating backbone
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Reference: AQA
A sugar-phosphate-sugar-phosphate polymer chain in which every second unit is a sugar and every other one a phosphate.
Topics that use alternating backbone
- DNA (A-level only) (AQA A-Level)
Related terms
- 2-deoxyribose
- charged phosphate groups
- complementary base pairing
- hydrogen bonding between bases
- phosphate bridge between sugars
- polar backbone faces water
- purine with pyrimidine
- base sequence stores information
Using alternating backbone in the exam
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