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YWArtist
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#4621
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#4621
Anyone got an introduction for an essay on ions please?
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alevel123
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#4622
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#4622
(Original post by EmilyBoorman)
Can somebody please explain to me what a DNA primer is and why it is needed?
It brackets the section if DNA needed. Kind of put markers where it needs to be cut
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gingerandice
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#4623
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#4623
plan for movement within cells?
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Scienceisgood
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#4624
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#4624
(Original post by YWArtist)
Anyone got an introduction for an essay on ions please?
http://w1.qehs.net/files/docs/exam_r...tic_essays.pdf

First essay.
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gingerandice
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#4625
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#4625
oh shezacocodoodle... at least its over today
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rm.xo
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#4626
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#4626
(Original post by YWArtist)
Anyone got an introduction for an essay on ions please?
Inorganic ions are charged molecules that do not contain C-C bonds. They are used in many processes from mammalian to those in plants and therefore have vital roles throughout the ecosystem. Within this essay I will be outlining a few different uses of inorganic ions in organisms from 3 main groups; animals, plants and bacteria.

I would write something along those lines, just giving a short intro.
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JessicaTSR
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#4627
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#4627
Omg if ATP is an essay topic I will cry with happiness!
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gingerandice
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#4628
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#4628
remember quantity !
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F1's Finest
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#4629
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#4629
ATP or Organic ions :sogood:
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MLogan
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#4630
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#4630
(Original post by James A)
ATP or Organic ions :sogood:
PERFECT! But i doubt AQA are ever that nice :ahhhhh::ahhhhh::ahhhhh:
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emah123
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#4631
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#4631
When did everyone go to sleep and wake up?
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Scienceisgood
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#4632
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#4632
(Original post by emah123)
When did everyone go to sleep and wake up?
Sleep, what's sleep? Is it nice?
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master y
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#4633
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#4633
How do hormones bring about a widespread effect, since not all cells have receptors to the hormones?
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KaranbirBandesha
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#4634
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#4634
Apparently you shouldn't waste any time on an introduction on the essay cause you don't get any marks for it
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lcj0503
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#4635
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#4635
My question is introns are no coding DNA ? But every single triplet codes for an amino acid so how are they "non coding" it's very confusing...


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LitGeek94
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#4636
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#4636
(Original post by EmilyBoorman)
Can somebody please explain to me what a DNA primer is and why it is needed?
DNA primers r used to form the starting codon on single stand DNA so that the DNA polymerase will continue to bind bases to the strand from the starting codon
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Ilikeviruses
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#4637
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#4637
(Original post by emah123)
When did everyone go to sleep and wake up?
Planned to get an early night at 10pm, tossed and turned until about 4am, woke up purely to have a panic attack, and did the same at 6am; at which point I got up, cursed the heavens and began revising.

So, people without anxiety problems: I envy you.
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CupcakeFaerie
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#4638
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#4638
Good luck everyone!! SOOOOO happy it's an afternoon exam, have the whole day to refresh your memory
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Ilikeviruses
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#4639
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#4639
(Original post by lcj0503)
My question is introns are no coding DNA ? But every single triplet codes for an amino acid so how are they "non coding" it's very confusing...


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It is the exons that code for amino acids. The Introns are there, supposedly, to reduce the probability of a mutation in a codon which will likely affect the entire protein.
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KaranbirBandesha
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#4640
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#4640
(Original post by lcj0503)
My question is introns are no coding DNA ? But every single triplet codes for an amino acid so how are they "non coding" it's very confusing...


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They haven't discovered why they're there yet, i guess you just have to accept it
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