Cell Biology Day 6
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(A) a nitrogenous base of the purine family, found in nucleotides.
The subunit that serves as the building block of a polymer.
Term used to describe how the two strands of DNA in a double helix run in opposite directions (whilst one is 5’ to 3’, the other is 3’ to 5’).
Includes purines and pyrimidines such as adenine, cytosone, guanine, thymine and uracil that are components of nucleotides.
Term used to describe the association, by hydrogen bonding, between nitrogenous bases (A with G and C with T or U) in a DNA or RNA molecule.
An organic molecule consisting of a nitrogenous base joined to a five-carbon sugar.
Building block principle
Describes how the large complex molecules found in living systems are quite simple in their basic construction, being polymers made of a chain of monomeric ‘building blocks’.
The building block of a nucleic acid, consisting of a five-carbon sugar covalently bonded to a nitrogenous base and a phosphate group.
A type of strong chemical bond in which two atoms share one pair of valence electrons.
A five-carbon sugar such as is found in nucleotides.
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