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Prep for sec 1-3


What does DNA do? carries information to the next generations,determines charcteristics,and copies itself every time a cell divides
what are nucelotides? units that make up a dna molecule
what are the three parts of nucelotides? deoxiribose sugar,phosphate group,nitrogen base
what are 4 kinds of nitrogen bases? adenine,guanine,cytosine,thymine
what are the letter pairings in DNA? A and T; G and C
where is DNA located? nucleus
in procaryotic cells where is DNA located? nucleus but can be in cytoplasm
in procaryotic cells are single cellular or multicellular? single
what is the start codon on the mRNA? AUG
What are the stop codons? UAA, UAG, and UGA
How many nucleotides code for 1 amino acid? 3 nucleotides for every 1 amino acid
What is the tRNA anticodon for the mRNA codon AGU? UCA
What is a polypeptide chain? A protein chain.
What is the end product of translation? A polypeptide chain.
What is always the first amino acid? Met
the dna strands are what? complementary
replication is carried out by what? enzymes
what is step 1 of dna replication? dna unzips and unwinds
what is step 2 of dna replication?
what is step 3 of dna replication?
Created by: jillbill101