Biology? Are you ready? (2 Viewers)

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wow thanks for going out of your way to explain :) !

Can you tell me if I'm correct about this ?
Say if there is a strand with the letters - CAT GAC TAU then does it get changed to GTA CUG AUU I'm not sure what happens with the U ?
if the DNA strand is: AAC ATA GCT CAT

mRNA strand will be: UUG UAU CGA GUA

pretty sure thats it
 

cpwincess19

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There isn't a dot point on it, it's under the 'assumed knowledge' section along with graphing, variables etc
Yeah that's why I was wondering :/ because we've never been asked a question about that (well not me anyway)
& i have a theory that our year (year 12 2011) are like the guinea pigs for everything -.-
And for transgenic species - I think I might just talk about the injecting of salmon genes into strawberries , what are you guys thinking of talking about ?
 
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This is a solid explanation and I may be incorrect but I think the only thing a little wrong here is that rRNA doesn't specifically catalyze the process you can just say ribosomes catalyze the process and rRNA are a structural part of ribosomes (along with other proteins).
yeah youre most probably right
 
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This is a solid explanation and I may be incorrect but I think the only thing a little wrong here is that rRNA doesn't specifically catalyze the process you can just say ribosomes catalyze the process and rRNA are a structural part of ribosomes (along with other proteins).
yeah youre most probably right
 

cpwincess19

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if the DNA strand is: AAC ATA GCT CAT

mRNA strand will be: UUG UAU CGA GUA

pretty sure thats it
So there can't be a U in the DNA strand ?
 

danjw

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Yeah that's why I was wondering :/ because we've never been asked a question about that (well not me anyway)
& i have a theory that our year (year 12 2011) are like the guinea pigs for everything -.-
And for transgenic species - I think I might just talk about the injecting of salmon genes into strawberries , what are you guys thinking of talking about ?
I'll be using the salmon example to, simply because I found it interesting so I know I'll remember it.
 

memo15

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lolll wouldnt it be crazy if someone had the bio paper with them :O
 

cpwincess19

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Uracil (U) exists only on mRNA strands Thymine (T) is on DNA strands
Thanks so much! That makes it a lot easier to understand now ahaha
Also does anyone have a good way of remembering B&T cell interaction ?
 
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Effekt

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This is my understanding of how it works
Uracil (U) replaces thymine (T) as the complementary RNA nucleotide of Adenine (A)

Can anyone confirm this or have a better example?
 

cpwincess19

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lolll wouldnt it be crazy if someone had the bio paper with them :O
LOL yeah like that facebook group about googling hsc 2011 answers just in case :p
 

cpwincess19

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This is my understanding of how it works
Uracil (U) replaces thymine (T) as the complementary RNA nucleotide of Adenine (A)

Can anyone confirm this or have a better example?
I was just confused about what happens to the U but now it's clear because I now know that Uracil doesn't exist in the DNA strand :D
 

danjw

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Thanks so much! That makes it a lot easier to understand now ahaha
Also does anyone have a good way of remembering B&T cell interaction ?
As far as I know all you need to know is that helper T cells initiate the production of B cells to help fight infection?
Make sure you know the 4 different types of Tcells to!
 
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Thanks so much! That makes it a lot easier to understand now ahaha
Also does anyone have a good way of remembering B&T cell interaction ?
i learned that using a comic strip lol (not a retard)

firstly, as part of phagocytosis, macrophages engulf and display the antigen on their surface. this initiates helper t-cells into (i guess) realising that an antigen has entered and can potentially affect normal bodily function. it then spurns the differentiation of t and b cells into their components (cytotoxic t cells and plasma b cells) through the release of (i believe) interleukin. these cells attack and destroy the antigen

now suppressor t cells differentiate and 'supress' the immune response and finally memory b and t cells will remember the antigen and how the immune response fought it for future etc (this is why vaccines work)
 
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Effekt

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Ok, lets start a marathon. I will start with a question based off a dotpoint.

Explain how mutations in DNA may lead to the generation of new alleles.
 
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This is my understanding of how it works
Uracil (U) replaces thymine (T) as the complementary RNA nucleotide of Adenine (A)

Can anyone confirm this or have a better example?
just for the sake of accuracy, its better to say base, since nucleotides are phosphate/ sugar/ base things

you probably know this and i'm just being picky
 

cpwincess19

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ohhhh okay thankyou :) !
I only know suppressor t cells , memory and cytotoxic killer cells :/
 

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