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DNA in eukaryotic cells
chromosomes
DNA building blocks
nucleotides
nucleotides consist of
adenine
phosphate
base
side rail is composed of
alternating phosphate groups and sugar
side rails are bonded through
covalent bonds
bases are bonded by
hydrogen bond s
enzyme helicase
breaks hydrogen bonds and seperates 2 strands
DNA polymerase
brings in correct bases to compliment template strand
semiconservative replication
ensure accuracty
codons
three bases in DNA that code for amino acids
RNA nucleotides
ribose
RNA strand count
single stranded
messenger RNA
transcrption of DNA ; carries genetic code to ribosome
transfer RNA
carries amino acids to ribosome
how many amino acids are there
20
gene
DNA that provides genetic info to build proteins
mutation
change in genetic info of cell
hemoglobin
oxygen carrying pigment found in red blood cell
sickled disease
not able to transport oxygen efficiently
how many bases of MRNA are needed to code for one amino acid
3
