DNA and RNA Flashcards
DNA stands for:
Deoxyribonucleic Acid
Building blocks of DNA
Nucleotides
3 parts of a nucleotide
5-carbon sugar, phosphate base, nitrogen base
4 nitrogen bases
A, T, C, G
4 scientists who discovered DNA
Crick, Watson, Franklin, Wilkins
Which enzyme unzips DNA
DNA Helicase
Which enzyme adds complementary nitrogen bases to DNA
DNA Polymerase
3 types of RNA
rRNA, tRNA, mRNA
rRNA
Ribosomal RNA, helps in protein synthesis
tRNA
Transfer RNA, bonds to amino acids and brings them to the ribosome
mRNA
Messenger RNA, carries genetic info out of the nucleus to ribosome
Differences between RNA and DNA
RNA- ribose, one strand, disposable, leaves the nucleus. DNA- Deoxyribonucleic Acid, two strands, important, cannot leave the nucleus
Series of three nitrogen bases
a codon
Start codon
AUG, Methionine
Stop codons
UAA, UGA, UAG