DNA 1.5 Flashcards
what does DNA stand for
Deoxyribonucleic acid
what does a molecule of DNA consist of
two strand twisted together into a double helix
name the bases
adenine, thymine, cytosine and guanine
what bases pair together
adenine always pairs with thymine
cytosine always pairs with guanine
what does the order of bases in DNA determine
the sequence of amino acids in a protein therefore the proteins structure and function
what does mRNA do
carries a complementary copy of genetic code from the nucleus to the ribosome
where is mRNA made
the nucleus
stage 1 of protein synthesis
the genetic code in the nucleus is copied by a mRNA
stage 2 of protein synthesis
the mRNA carries a complementary copy of the code out of the nucleus to the ribosome
stage 3 of protein synthesis
the ribosomes select the correct amino acids which are joined together to make a specific protein
what is a gene
a sequence of DNA that codes for a protein
