Lecture 7 Flashcards
What direct the formation of an organism/
the 4 nucleotides
What specifiy the linear order of amino acids in each protein?
nucleotides
What determine biological functions a cell
properties of proteins
Does DNA control protein synthesis directly/
No
What is the intermediary?
RNA
What is copied into RNA and what is it called when this happens?
a gene, transcription
What is used as a template to direct the synthesis of protein?
RNA in translation
linear polymers
RNA and DNA
What is made of nucleiotides connected by phosphodiester bonds?
RNA and DNA
What is single stranded?
RNA
What does RNA have instead of deoxyribonucleotides?
ribonucleotides
RNA has…. instead of Thymine
Uracil
What can fold inot compelx 3 dimensional structures allowing some RNAs to have precids structural anc catalytic functions
RNA
Ribose has an OH, deoxyribose has an …
H
Uracil has a H…. thymine has a
methyl
mRNAs function
messenger RNAs, code for proteins
rRNAs function
ribosomeal RNAs, form the basic structure of the ribosome and catalyze protein syntehsis
tRNA
transfer RNAs, central to protein synthesis as a daptors btw mRNA and amino acids
snRNAs
small nucleolar RNAs, help to process and chmicall modify rRNAs
miRNAs
microRNAs, regulate gene expression by blocking translation of specific mRNAs and cause their dgradation
siRNas
small interferenig RNAs, turn off gene expression by direction the degradation of selective mRNAs and the establishment of compact chromatin structures
direct protein synthesis (3-5% of tal celluarl RNA) Coding RNAs
messenger RNA
What is many genes final product
RNA
WHat does non coding RNa serve as
enzymatic and structural components for many biological processes
the core of ribosome and catalyze protein synthesis
ribosomal RNA
form the core of ribosomes and catalyze proteins synthesis
ribosomeal RNA
form adaptors that select and hold amnio acids during protine synthesis
transfer RNA
direct the spicing of pre mRNA to form mRNA
small nuclear RNA
regulate eukaryotic gene expression by degrading select m RNA
small interfering RNA
regulate gene expression by blocking translation of sleecive mRNA
micro RNA
multi subutnit complex
bacterial RNA polymerase (RNA pol)
what is holoenzyme
a2bb’signma
What Does holoenzyme catalyze?
the formation of phosphodiester bonds that link nucleotides
What does RNA pol have?
proof-reading nuclease
