DNA and RNA 0.0 / 5 ? BiologyDNA, genetics and evolutionASEdexcel Created by: francesca_321Created on: 09-04-15 18:13 What group does a nucleotide have? A phosphate group 1 of 31 What bases does DNA have? A, T, G and C 2 of 31 What bases does RNA have? A, U, G, C 3 of 31 What sugar does DNA have? Deoxyribose 4 of 31 What sugar does RNA have? Ribose 5 of 31 How do nucleotides join? In a condensation reaction 6 of 31 Wha sort of chain is RNA? Signle stranded chain of nucleotides 7 of 31 What chain is DNA? Two seperate chains held together by hydrogen bonds 8 of 31 what is this coiled shaped called? A double helix 9 of 31 What is the complementary base pairing system A + T, C + G 10 of 31 How many hydrogen bonds form between, T + A, C+G? 2 and 3 11 of 31 What is the genetic code? The order of bases on one strand of DNA 12 of 31 What is the code formed from? The triplet of bases 13 of 31 What does each triplet code for? An amino acid 14 of 31 What will the structure of amino acids form? A polypeptide 15 of 31 What does TRNA do? brings amino acid to MRNA molecule for translation 16 of 31 What is the conservative model? The DNA molecule would get copied and make a new molecule 17 of 31 What is dispersive model? DNA cuts off at various parts and then swaps to make two new molecules 18 of 31 What is the semi conservative model? The DNA splits which forms the base for two new DNA molecules 19 of 31 What is the first step in DNA replication? Hydrogen bonds between bases break allowing the DNA to unzip 20 of 31 What do the DNA nucleotides then do? Pair up with their complementary bases 21 of 31 What links the adjacent nucleotides? DNA polymerase 22 of 31 What are created as a result? Two identical daughter strands 23 of 31 What is the first step in transcription? DNA unwinds and hydrogen bonds between base pairs split and seperate the two strands 24 of 31 What strand is used in the formation of mRNA? Antisense strand 25 of 31 What are the ribonucleotides tied up with? Their complementary base pair on the template strand, U and A 26 of 31 What are Ribonucleotides joined up by? RNA polymerase 27 of 31 to form what? A strand of mRNA 28 of 31 During translation, What does the mRNA do? Carry the genetic information in the sam base sequence language as DNA 29 of 31 What does tRNA do? translate the base sequence on the mRNA into the protein amino acid sequence 30 of 31 What does each tRNA carry? An amino acid to the mRNA where the amino acid carried by the other tRNA to build a polypeptide 31 of 31
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