[PrettyLittleLiars]

(Original post by Fatima0065)
state other vector sin which dna can be incorporated

Viruses/liposomes/plasmids of bacteria (lol I wrote DNA previously!)

Describe the process of small scale timber production

[Dogs]

(Original post by otrivine)
what is hypostatic?

epistatic gene - the gene that influences

hypostatic gene - the gene that IS influenced

[otrivine]

(Original post by Dogs)
epistatic gene - the gene that influences

hypostatic gene - the gene that IS influenced

got it thanks
recessive- phenotype is expressed and not present with dominant allele
epistasis is the interaction of gene loci and masks the expression of another gene loci

[PrettyLittleLiars]

(Original post by rf229)
yeah, pretty much right. this is the mark scheme:

filter (to remove fungus) ;
fungus washed (to remove penicillin) ;
continuous countercurrent / chemical extraction ;
concentration ;
addition of potassium ions ;
precipitate crystals / (potassium) salts ;
solvents used to purify penicillin ;
AVP ; e.g. dried, some are chemically modified, 99.5% pure


and in response to your question I have no idea? because no lactose is present? idk

It is because the bacteria will take up the lactose and break it down into glucose (remeber E.coli in the Lac Operon?) This means that there is no lactose present anymore. :')

[Dogs]

(Original post by otrivine)
got it thanks
recessive- phenotype is expressed and not present with dominant allele
epistasis is the interaction of gene loci and masks the expression of another gene loci

correct again!
im out for the night, probably be back tomorrow... you should relax soon! good luck with revision and exams! seeya

[Issy123]

(Original post by teaandscones)
reverse transcriptase although technically it doesn't convert it, it just makes a complementary DNA strand so you're left with mRNA AND DNA

Okay thank you!

[Fatima0065]

are clalcium ion use dto desoolve plasme mebrane when takein g up bactreia?

[Fatima0065]

sorry about spelling..busy doing somethening

[otrivine]

(Original post by Dogs)
correct again!
im out for the night, probably be back tomorrow... you should relax soon! good luck with revision and exams! seeya

thanks good night

[otrivine]

(Original post by Fatima0065)
are clalcium ion use dto desoolve plasme mebrane when takein g up bactreia?

can you write this again sorry fatima ???

[Fatima0065]

Describe the advantages to microorganism of the capacityto take up plasmid DNA from the environment:

[Fatima0065]

(Original post by otrivine)
can you write this again sorry fatima ???

are calcium ions used to dissolve the cell wall,,or any other specific reason when taking up plasmid in bacteria

[otrivine]

(Original post by Fatima0065)
are calcium ions used to dissolve the cell wall,,or any other specific reason when taking up plasmid in bacteria

calcium salts are used yes to break the peptidoglycan cell wall

[otrivine]

(Original post by Fatima0065)
Describe the advantages to microorganism of the capacityto take up plasmid DNA from the environment:

more resistance, mutation ,pass on to offspring advatageous alleles , can become resistant to anitibioitic conjugation , can cause more bacterias to divide?

[Fatima0065]

(Original post by otrivine)
calcium salts are used yes to break the peptidoglycan cell wall

thanks!! :d

[otrivine]

(Original post by Fatima0065)
thanks!! :d

im sure is correct cause to check my answer i double checked in wikipedia

[Fatima0065]

explain what is meant by gene therapy

[otrivine]

(Original post by Fatima0065)
explain what is meant by gene therapy

it is a therapeutic treatment where an allele that causes the disease is replaced with another allele that cures the ill/disease

[The_original_one]

This module is so hard :/ Can someone explain to me in depth what germline therapy and somatic therapy is? I slightly get the somatic but not the germline. And also the DNA probing and stuff is really confusing I need a lot of help :/ Please try not to explain from the textbook because I don't get it reading it from their so as much in your own words please.

[Beffnaay]

I hate f215 with a passion