molecular genetics bio
Card Set Information
molecular genetics bio
exam 3 molecular genetics powerpoint
the study of the precise chemical details of how genetic systems work
hereditary chemical is a large molecule known as?
deoxyribose nucleic acid
DNA is a polymer of?
raises the pH?
how many amino acids are needed to make a protein?
what does the nucleotide structure contain?
what is the base of a nucleotide structure?
5 carbon monosaccharide
what holds the 2 strands of dna together?
sugar phosphate backbone
A pairs with?
C pairs with?
who proposed that DNA is not a single stand, but a double helix
james Watson and francis crick
DNA must be capable of ?
DNA must be responsible for ?
all genetically controlled phenotypic characteristics
what is copied during DNA replication
unwind parental strand and use that to make daughter strand by following base pairing rules
template strand dictates?
sequence of daughter strand
mistakes CAN NOT happen during?
what happens when dna replication is completed?
there are two identical double stranded molecules
synthesis reaction catalyzed by a family of enzymes referred to as a?
what does the polymerase system check its work for?
to make sure everything is set up correctly
what has a 2 part system of checking that gives you an error rate?
susceptibility to light related to ?
the master molecule?
DNA is not directly responsible for the?
appearance of phenotypic characteristics
proteins (enzymes) are responsible for ?
the appearance of traits
DNA has the ______, proteins cause it to ___ ____
link between dna and proteins in phenotypic traits is?
the molecule that hooks up library with action molecules of protein
RNA has____ instead of ____
99.9% of DNA in chromosomes is?
RNA is found?
RNA is ___ stranded
copying mechanism from DNA to RNA?
after transcription occurs, RNA is then transported out of the nucleus and into the cytoplasm where?
it will have a specific function depending on type
___ types of rna can be transcribed
carries the specific instructions on how to construct protein from the appropriate amino acids
a structural RNA used to construct ribosomes
a family of RNA's that transport amino acids to the ribosomes for incorporation into proteins
information in DNA is _____ on to mRNA
the information in mRNA is _____ in to protein
moving from one language to another
infectious proteins that can cause mad cow disease
bovine sponigifer enspefolitis (BCE)?
mad cow disease
how do you get mad cow disease?
by eating infected food
requires a code to translate nucleotide sequences into amino acid sequences
RNA directed to protein synthesis
in translation, code must be large enough to accommodate all __ amino acids needed to make biological proteins
only __ possible nucleotides in translation
steps of translation?
DNA to RNA to protein
2 nucleotides code for a single amino acid
3 nucleotide sequences
triplet sequence is a ?
smallest part of code that has meaning
2 important parts of tRNA?
amino acid attachment point
sytem of 2 nucleotides
tRNA is bonded by a ?
stages of translation?
peptide bond forms between 1st and 2nd amino acid
what happens after elongation?
end up with 4 or 5 copies of same protein
all genetic information is not constantly _____ and then ____
humans have _______ cells controlled by approtximately _____ ____
function is controlling the expression of other genes
transformation of normal cell into malignant cell may be caused by?
turning on of oncogenes
normal part of human genome, active during development then turned off
abnormal activation can be caused by?
viral alteration of DNA
very rare in non smokers, abnormally high in smokers