why though? i thought the nitrogen bases are of equal value...?emma2290 said:i talked to my teacher afterwards and she said that it was 20 20 30 30
also in the temperature extended response were we supposed to talk about adaptations for short term? cos i didnt
I got the impression the first cell wasStipe Pletikosa said:Meiosis queston eveyone. what was the '?' indicative for?
bmwz4 said:i had 20 20 20 20 SUM1 PLZ CONFIRM THIS for the love of god!
well they should bebmwz4 said:why though? i thought the nitrogen bases are of equal value...?
i said in the short term if the plants/animals cant adapt they might die out and in the long term become extinct...and in the short term endotherms will find it dfficult when temperatures become too high since their adaptations are physiological whilst ectotherms they have behavioural adaptations...i dno it was weird
well acid base pairs are equalbmwz4 said:why though? i thought the nitrogen bases are of equal value...?
specific but it did the job2opinion8d said:The bases question is not part of the course. I remembered my teacher taught me something called "Chargaff's prinicple" in year 10 and i just looked this up in wikipedia
"Chargaff's rules state that DNA from any cell of all organisms should have a 1:1 ratio of pyrimidine and purine bases and, more specifically, that the amount of guanine is equal to cytosine and the amount of adenine is equal to thymine. This pattern is found in both strands of the DNA. They were discovered by Austrian chemist Erwin Chargaff.
Chargaff Parity Rule 1 holds that a double-stranded DNA molecule globally %A = %T and %G = %C. The rigorous validation of the rule constitutes the basis of Watson-Crick pairs in the DNA double helix"
hope that helps!
I had a mind blank on this question as well! EEK!zaccass said:I couldn't do one question, 'Name ONE disease casued by a macro parasite?'
Major mind blank
efhat said:for that last communication question i wrote about the IR detection and how some organisms have tetrachromatic vision rather than trichromatic and stuff liek that coz they have differetn needs and environmental pressures......i hope they accept that coz the detection of colour does involve the EM spectrum.....wat u rekon?