Proteins and Nucleic Acids (OCR A-Level Biology A): Flashcards
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Practise the cards
10 cards from this deck
Three components of a nucleotide
Three components of a nucleotide
Pentose sugar, nitrogenous base, phosphate group
Sugar in DNA vs RNA
Sugar in DNA vs RNA
Deoxyribose in DNA; ribose in RNA
Base in RNA but not DNA
Base in RNA but not DNA
Uracil (U)
Two purines
Two purines
Adenine (A) and Guanine (G)
Three pyrimidines
Three pyrimidines
Cytosine (C), Uracil (U), Thymine (T)
Base pairing rules in DNA
Base pairing rules in DNA
A pairs with T; G pairs with C
Semi-conservative replication
Semi-conservative replication
Each new DNA has one original & one newly synthesised strand
Enzyme that unwinds DNA
Enzyme that unwinds DNA
Helicase
DNA polymerase function
DNA polymerase function
Catalyses phosphodiester bond formation in DNA backbone
Transcription vs Translation
Transcription vs Translation
Transcription: DNA to mRNA; Translation: mRNA to protein