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Yoon

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What does DNA do?   carries information to the next generations,determines charcteristics,and copies itself every time a cell divides  
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what are nucelotides?   units that make up a dna molecule  
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what are the three parts of nucelotides?   deoxiribose sugar,phosphate group,nitrogen base  
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what are 4 kinds of nitrogen bases?   adenine,guanine,cytosine,thymine  
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what are the letter pairings in DNA?   A and T; G and C  
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where is DNA located?   nucleus  
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in procaryotic cells where is DNA located?   nucleus but can be in cytoplasm  
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in procaryotic cells are single cellular or multicellular?   single  
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what is the start codon on the mRNA?   AUG  
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What are the stop codons?   UAA, UAG, and UGA  
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How many nucleotides code for 1 amino acid?   3 nucleotides for every 1 amino acid  
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What is the tRNA anticodon for the mRNA codon AGU?   UCA  
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What is a polypeptide chain?   A protein chain.  
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What is the end product of translation?   A polypeptide chain.  
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What is always the first amino acid?   Met  
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the dna strands are what?   complementary  
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replication is carried out by what?   enzymes  
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what is step 1 of dna replication?   dna unzips and unwinds  
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what is step 2 of dna replication?    
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what is step 3 of dna replication?    
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