AP Biology Unit 6 Vocab

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5' GTP Cap

Back

the 5' end of the pre-mRNA receives a modified guanine nucleotide "cap"

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allosteric activator

Back

substrate binds to allosteric site and stabilizes the shape of the enzyme so that the active sites remain open

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allosteric inhibitor

Back

substrate binds to allosteric site and stabilizes the enzyme shape so that the active sites are closed (inactive form)

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alternative splicing

Back

Splicing of introns in a pre-mRNA that occurs in different ways, leading to different mRNAs that code for different proteins or protein isoforms. Increases the diversity of proteins.

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amino acids

Back

building blocks of proteins

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anitcodon

Back

a set of 3 nucleotides that is complementary to an mRNA codon

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anitparallel

Back

two sugar phosphate backgrounds run opposite 5'-3' direction from each other

Front

Chargaff's Rule

Back

A=T and C=G

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Codon

Back

A specific sequence of three adjacent bases on a strand of DNA or RNA that provides genetic code information for a particular amino acid

Front

conservative model

Back

two parental strands reassociate after acting as templates for new strands thus restoring the parental double helix