Nucleic Acids 0.0 / 5 ? BiologyBiological moleculesBiological molecules, organic chemistry and biochemistryCellular processesDNA, genetics and evolutionHuman, animal and plant physiologyCellular processes and structureASAQA Created by: Betsy_2018Created on: 02-01-17 18:44 In DNA, what is under the plane of carbon-2? A hydrogen atom 1 of 18 In RNA, what is under the plane of carbon-2? A hydroxyl (OH) 2 of 18 Where does the nitrogenous base attach to the ribose molecule? C-1 3 of 18 Where does the phosphate group attach to the ribose molecule? C-5 4 of 18 What is the bond between the phosphate group of one nucleotide and the ribose of another, and where? Phosphodiester bond; C-3 5 of 18 Which nitrogenous bases are purines? A and G 6 of 18 How many rings do purines have? 2 double carbon rings 7 of 18 How many rings do pyrimidines have? 1 double carbon ring 8 of 18 Which nitrogenous bases are pyrimidines? T, C, U 9 of 18 Which are larger, purines or pyrimidines? Purines 10 of 18 How many hydrogen bonds form between A and T, or A and U? 2 hydrogen bonds 11 of 18 How many hydrogen bonds form between C and G? 3 hydrogen bonds 12 of 18 Why is it good that hydrogen bonds are weak? Allow for easy replication and protein synthesis 13 of 18 What else makes for easy replication? Base pairing 14 of 18 What are the backbones broken down by? DNA helicase 15 of 18 What does the phosphodiester backbone protect the DNA strand from? Chemical reactions 16 of 18 What is the length of RNA polynucleotide chains? Short 17 of 18 What does each backbone strand act as during replication? A template 18 of 18
Biological molecules AQA AS Biology PART 5 of 8 TOPICS: Nucleic acids 5.0 / 5 based on 1 rating Teacher recommended
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