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    (Original post by tsr1)
    What's the difference between ATP-ase and ATP- synthase? I know they're both enzymes in the thylakoids . but is there any difference? The mark schemes sometimes say ATP-ase and other times it says ATP synthase?
    I'm pretty sure they're both the same. I think I saw a mark scheme (possibly a 6BI05 one) that had "ATPase/ATP synthase" as the answer, so I'm guessing that they at least have the same function...
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    (Original post by Brad0440)
    What is the humoral immune response? Does it also have a different name?
    its the response of the immune system which includes the b cell being activated,,m not going to the details.....the b cell gets activated by the t helper cell with the help if cytokines ,,,,,so the activated b cell differentiates to plasma cell wich produce antibodies,,,thats humoral...i think itz also called clonal selection,,,,
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    (Original post by [email protected])
    Can anyone explain the clonal selection
    itz the same as humoral immune response
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    so what are the predictions for tomorrows paper?
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    Alright, I'm off! Good Luck everyone!
    Stay sharp and give it your best!
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    I think I'm gonna stay up all night studying for this. Anyone else thinking of doing the same?
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    i'll probably stay up till 12
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    Here are the January Papers for Unit 4 and 5
    Attached Images
  1. File Type: pdf 6BI05_01_que_20130121.pdf (733.5 KB, 62 views)
  2. File Type: pdf 6BI05_01_rms_20130307.pdf (140.1 KB, 42 views)
  3. File Type: pdf 6BI04_01_que_20130111.pdf (775.6 KB, 75 views)
  4. File Type: pdf 6BI04 2013 Mark Scheme.pdf (156.8 KB, 1062 views)
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    Can someone name all the key core pracs?
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    (Original post by Brad0440)
    I'm pretty sure they're both the same. I think I saw a mark scheme (possibly a 6BI05 one) that had "ATPase/ATP synthase" as the answer, so I'm guessing that they at least have the same function...
    ATPsynthase is used to make ADP + Pi ---> ATP
    ATPase is used to make ATP ---> ADP + Pi
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    can somebody tell me how to link the biological knowledge to the questions in the exam (doing past papers did not help me )
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    What are your predictions?
    I made a list of all the possible topics and looked at the patterns...
    Here is my prediction
    -Structure of chloroplast
    - Light dependant stage of photosynthesis
    -how the products of photosynthesis are used
    NPP/GPP
    Carbon Cycle
    Ecology prac
    Niches/Succession
    Cause of global warming and the effect of global warming
    Evidence for global warming
    Nature of the genetic code
    Post transcriptional change
    DNA profiling
    Transcription
    Bacteria vs Virus
    Barriers to infection
    TB
    Specific immunity
    Antibiotics prac
    Hospital Acquired infections
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    (Original post by Sravya)
    What are your predictions?
    I made a list of all the possible topics and looked at the patterns...
    Here is my prediction
    -Structure of chloroplast
    - Light dependant stage of photosynthesis
    -how the products of photosynthesis are used
    NPP/GPP
    Carbon Cycle
    Ecology prac
    Niches/Succession
    Cause of global warming and the effect of global warming
    Evidence for global warming
    Nature of the genetic code
    Post transcriptional change
    DNA profiling
    Transcription
    Bacteria vs Virus
    Barriers to infection
    TB
    Specific immunity
    Antibiotics prac
    Hospital Acquired infections
    lol wat is left?
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    (Original post by hussaincute)
    lol wat is left?
    Hydrogen and glucose
    ATp used as energy
    Trophic levels
    biotic and abiotic factors affecting a population
    Increase in temperature and development
    Canges in allele frequency
    Speciation
    PCR
    Translation
    Gel electrophresis
    Decomposition- Entemology. temp and rigor mitosis
    HIV
    Antiobiotic types
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    (Original post by Sravya)
    Hydrogen and glucose
    ATp used as energy
    Trophic levels
    biotic and abiotic factors affecting a population
    Increase in temperature and development
    Canges in allele frequency
    Speciation
    PCR
    Translation
    Gel electrophresis
    Decomposition- Entemology. temp and rigor mitosis
    HIV
    Antiobiotic types

    more or less they r linked to each other except gel electrophoresis n entemology stuff
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    A students! What's the secret to getting an A?
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    can somebody explain selection pressure?
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    (Original post by Alia223)
    A students! What's the secret to getting an A?
    Taking the Edexcel D
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    oh mah gawd,

    I'm so nervous!

    Buh good luck guys!
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    (Original post by Sravya)
    Can someone name all the key core pracs?
    Gram staining - identifying -ve and +ve bacteria
    Brine shrimps - linked to global warming effects on animals and species
    Antibiotics - effectiveness (greater the zone of inhibition the more effective it is)
    Ecology - Random (usually with quadrat) and systematic sampling (usually with line transect)


    Hope I helped!
    Goodluck everyone for tomorrow!
 
 
 
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