Chapter 10 Flashcards
What does lac operon allow?
Allows E. coli to metabolize lactose
Transcription factor that increase the rate of transcription
activator
Mutated BRCA found in
breast ovarian cancer cells
micro rna comp to
part of mRNA
Operon
group of genes with a promoter-operator DNA sequence that controls their transcription
Homeodomian:
Region 60 aa bind to promoter or other nucleotide sequence
-COCH3
acetyl
Operator is a binding site in DNA for a ____
repressor
Repressor is a ___ factor
transcription
Aniridia
eye disorder
Eye gene
PAX6
cut up
RNA interference
Transcription factor
protein that influences transcription by binding directly to DNA
Transcription factor 2 types
activator
repressor
insulator
CH3
methyl
protein not function til changed
glycoprotein
Zip code located
before Plly a tail
Cytoplasm is ___ enviro for mRNA
hostile
cell uses ___ percent of genes
10
___ bind directly to DNA
transcription factors
What do repressors bind to?
Promoters
Silencers
Operators
activator b____
recruit RNA polymerase to prmoter or enhancer
only accessible to rna polymerase if
unwound from histones
delay to post transcription modification
prevent guanine cap
Alternative splicing category
II
fibronectin is in
liver
fibronectin is
soluble
mRNA localization
deliver mRNA to specific region, zip code
mRNA localizatoin category
II
What does insulation do
overrides a silencer and enhancer
Cap on zip code category
III
what does zip code cap do
degrades mRNA
micrornas category
III
In prokaryotes how if translation shut off
antisense rna
What forms glycoprotein
lipidation
master genes have
longer transcript, poly A tail,
where does gene expression start
unfertilized egg
where is protein gradient
Once egg is fertilized, mRNAs are translated making gradient in embryo
What determines which master genes
portions of nucleus exposed to gradients
how do homeotic genes encode transcription factors
homeodomain
Barr bodies are
condensed
How many genes on X
1336
how many genes on y
307
what are responsible for hormones
gonads
Flower order
sepal
petal
stamen
carpel
what is carpel
female repdocudctive
do pros have master genes
no
Sepal is inner/outer
outer n
if no lactose, passes into
LI
lactose made of
glucose-galactose
3 genes?
move lactose in
break it down
unknown
Once a dna nucleotide is methyalated
remains methylated in cell
s descendants
3 genes are silenced
repressor binds to operator making loo[
What do BRAC1 and BRAC2 control
chromosomes in dividing cells
help repair dna
why
XISt rna doesn’t coat X chromosome in cancer cell
BRCA1 gene’s protein product
associates with XIST rna gene
