DNA/RNA unit Flashcards
what does DNA stand for
deoxyribonucleic acid
structure of DNA
double helix, chonp
in dna
a=
c=
a=t
c=g
what do a=t and c=g represent
hydrogen bonds
what is a nucleotide
monomer of DNA consists of sugar, phosphate and nitrogenous base
function of DNA
codes for proteins
DNA replication
creates an identical strand for cell division, the DNA double helix unzips
DNA polymerase
enzyme that adds base pairs to a growing strand
where does DNA replication occur?
nucleus
what is the order of protein synthesis
DNA->RNA->protein
What does RNA stand for
ribonucleic acid
structure of RNA
single helix
types of RNA
mRNA and tRNA
what does mRNA do
messenger RNA, codes for amino acids
what does tRNA do
transfer RNA- carries amino acid to ribosome
structure of a protein
amino acid chain
two parts of protein synthesis
transcription and translation
what is transcription
DNA->mRNA in nucleus
what is translation
mRNA->protein in ribosome
point mutation
changes one point/letter in the DNA
substitution
changes on base/pair/letter into another
insertion
adds a base/pair/letter into DNA
deletion
takes a letter away from DNA
review the picture sheets
hell ya