AQA A-level Biology 7402 - Paper 2 - 13th June 2019 Watch

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AQA A-level Biology 7402 - Paper 2 - 13th June

Exam technique, night before breakdowns and discussion regarding this exam... It's all here :gthumb: Feel free to add resources to the thread as well as anything that may be helpful to others :smartass:

This thread covers the following papers:
  • 7402 Paper 2 2h 13 June 2019 am
:rave:

The official specification: https://filestore.aqa.org.uk/resourc...02-SP-2015.PDF
Spoiler:
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Paper 2
What's assessed
Any content from topics 5–8, including relevant practical skills

5 Energy transfers in and between organisms (A-level only)
6 Organisms respond to changes in their internal and external environments (A-level only)
7 Genetics, populations, evolution and ecosystems (A-level only)
8 The control of gene expression (A-level only)


Specimen and past papers:
https://www.aqa.org.uk/subjects/scie...ment-resources

:goodluck:

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VictiniCup
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Question regarding mark scheme: currently doing the 2018 paper 2. For one of the questions I have written down autosomal linkage but the mark scheme says genes are linked and the phrase is not underlined. Would I get a mark for saying autosomal linkage?
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Virolite
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(Original post by VictiniCup)
Question regarding mark scheme: currently doing the 2018 paper 2. For one of the questions I have written down autosomal linkage but the mark scheme says genes are linked and the phrase is not underlined. Would I get a mark for saying autosomal linkage?
ahh they're out and yes i'm assuming you would get the mark as long as it's relevant to the question so not sex linkage etc.
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tocka90
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Look at: https://www.youtube.com/channel/UCQX...AnOAPVBv-QRNTQ

Revision per topic

Exam tips

Model answers

2018 papers explained and all working outs provided
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Kayyy30
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Any predictions lads?
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GCSEStudent903
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PAPER 2 PREDICTIONS:

BOLD/UNDERLINE = 95% SURE
BOLD = VERY LIKELY
* COULD BE USED SOMEHOW IN THE PASSAGE (AT THE END OF PAPER)

Aerobic Respiration / The Electron Transport Chain *
• Tropisms / IAA
• Animal Movement – Taxis and Kinesis
Pacinian Corpuscle
Phosphorous Cycle
• Action Potentials and The Nerve Impulse*
• Muscle Structure
Muscle Contraction
• Glucose Control / Diabetes
• Second Messenger Model
• Kidney Structure / Production of Urine *
• Inheritance – codominance, sex-linkage.
• Cell Specialisation / Totipotency
• In Vivo Amplification of DNA / ligation / marker genes / replica plating
• In Vitro / PCR
Acetylation and Methylation of DNA
DNA Fingerprinting and VNTRs *
• DNA Probes
• Genetic Screening
Last edited by GCSEStudent903; 1 week ago
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Rahulsharma21
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How accurate are these predictions?
(Original post by GCSEStudent903)
PAPER 2 PREDICTIONS:

BOLD/UNDERLINE = 95% SURE
BOLD = VERY LIKELY
* COULD BE USED SOMEHOW IN THE PASSAGE (AT THE END OF PAPER)

Aerobic Respiration / The Electron Transport Chain *
• Tropisms / IAA
• Animal Movement – Taxis and Kinesis
Pacinian Corpuscle
Phosphorous Cycle
• Action Potentials and The Nerve Impulse*
• Muscle Structure
Muscle Contraction
• Glucose Control / Diabetes
• Second Messenger Model
• Kidney Structure / Production of Urine *
• Inheritance – codominance, sex-linkage.
• Cell Specialisation / Totipotency
• In Vivo Amplification of DNA / ligation / marker genes / replica plating
• In Vitro / PCR
Acetylation and Methylation of DNA
DNA Fingerprinting and VNTRs *
• DNA Probes
• Genetic Screening
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Virolite
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lmao at people who ask for predictions then ask how accurate they are
(Original post by Rahulsharma21)
How accurate are these predictions?
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bayanotbee
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is photosynthesis likely to come up?? i don't understand it and aqa textbooks don't know how to explain things
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UnknownError404
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does neutral in a mark scheme award you the mark?
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mm321
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(Original post by UnknownError404)
does neutral in a mark scheme award you the mark?
no i dont think so its just scientifically right but not the answer they are looking for
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GCSEStudent903
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I predicted Paper 1 pretty well but, as ever, you never know with AQA. Anything can come up.
(Original post by Rahulsharma21)
How accurate are these predictions?
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DysfunctionalMe
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For glycolysis, do you know if AQA accept glucose -> glucose phosphate -> hexose bisphosphate -> 2x triose phosphate, etcetera. This is instead of glucose -> phosphorylated glucose -> 2x triose phosphate, etc. It's just easier for me to remember what happens with ATP during glycolysis from this and if a respiration essay title comes up its two easy extra terms. But obviously I wouldn't want to lose a mark if we have to describe the stages of glycolysis and they only look for phosphorylated glucose - do you know if this is the case?
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RDL123
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Thank you so much! What are your predictions based on?
(Original post by Rahulsharma21)
How accurate are these predictions?
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curlyyy
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Do you guys have any tips on tackling the comprehension question?
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LALHIUT
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(Original post by curlyyy)
Do you guys have any tips on tackling the comprehension question?
Maybe try to go over all the previous one and see how the mark scheme is looking for
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Indiacorden
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anyone else only just started revising for this exam?!
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GCSEStudent903
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It's all about how well you apply the context. The questions are very tricky there and the mark schemes are undeniable harsh.

Just engage with the terminology used in the passage. Make sure you get the passage first then try to answer as specifically as you can. The more you do the faster you get. Read through every part carefully.
(Original post by curlyyy)
Do you guys have any tips on tackling the comprehension question?
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GCSEStudent903
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Glycolysis is very complicated in reality and the term "phosphorylated glucose" is an umbrella for the many many compounds that are before pyruvate.

As the science is correct, you will not be under marked.

But, if they ask you to complete a flowchart or some sort of diagram with the words, they'll be looking for triose phosphate and phosphorylated glucose, rather than fructose bis-phosphate and all the other complex words. It'll depend on how they word the Q.

I doubt you will be asked to describe glycolysis as it's too simple - they're more likely going to use some deformed practical. As long as you understand the concepts behind it, i.e. that pyruvate needs to be formed as only it can cross mitochondrial membranes and not glucose, and that there is a net positive change of 2 ATP, you should be fine.


(Original post by DysfunctionalMe)
For glycolysis, do you know if AQA accept glucose -> glucose phosphate -> hexose bisphosphate -> 2x triose phosphate, etcetera. This is instead of glucose -> phosphorylated glucose -> 2x triose phosphate, etc. It's just easier for me to remember what happens with ATP during glycolysis from this and if a respiration essay title comes up its two easy extra terms. But obviously I wouldn't want to lose a mark if we have to describe the stages of glycolysis and they only look for phosphorylated glucose - do you know if this is the case?
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curlyyy
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(Original post by GCSEStudent903)
It's all about how well you apply the context. The questions are very tricky there and the mark schemes are undeniable harsh.

Just engage with the terminology used in the passage. Make sure you get the passage first then try to answer as specifically as you can. The more you do the faster you get. Read through every part carefully.
Thank you, that's really helpful

Also, what is replica plating, is that just in vivo cloning?
Last edited by curlyyy; 1 week ago
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How did your AQA A-level Biology Paper 3 go?

Loved the paper - Feeling positive (284)
15.19%
The paper was reasonable (1038)
55.51%
Not feeling great about that exam... (404)
21.6%
It was TERRIBLE (144)
7.7%

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