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OCR A2 Biology 2016 Predictions thread (F214/F215)

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For control of heart rate do we need to know about bundle of his etc.? i cant find it in my textbook or revision guide.
Reply 61
Original post by wazzarazza
For control of heart rate do we need to know about bundle of his etc.? i cant find it in my textbook or revision guide.


"Outline the hormonal and the nervous mechanisms involved in the control of heart rate in humans"
Copied from the specification, it doesn't mentioned anything about the processes that happen in the heart, so I don't think you do.
However you may want to know what happens just in case you get a synoptic question.
But basically knowing the SA node is the pacemaker, it gets stimulated by the cardiac control centre in the medulla, which sends action potential through the accelerator nerve to increase the frequency of contractions or through the vagus nerve to decrease.
Stretch receptors detect movement, require more o2 so accelerator nerve stimulates SA node = Increase HR
Low PH due to increase in CO2 = Increase HR
High blood pressure, vagus nerver = Decrease HR
What did everyone think? I found it quite easy apart from a few questions being the goldfish one, the 5 marker because it has AS knowledge that I couldn't remember and I didn't understand the shading one about insulin and glucose
Is there an unofficial mark scheme anywhere?
Reply 64
Original post by GeologyBoy
What did everyone think? I found it quite easy apart from a few questions being the goldfish one, the 5 marker because it has AS knowledge that I couldn't remember and I didn't understand the shading one about insulin and glucose


Same. It was an okay-ish paper. The DNA question threw me off a bit though.
Does anyone have a list of predictions for F215/ a prediction paper? Thanks!
Original post by jerseyalevel
Does anyone have a list of predictions for F215/ a prediction paper? Thanks!


All I have seen for the predictions is this: Cellular control:
- Mutations (advantageous/non advantageous)
- Body plans (most likely a long, application question)
- Translation/transcription
- Epistasis
- Hardy-Weinberg calculation (my teacher said this had a very strong chance of coming up)
Biotechnology:
- Cloning animals (embryo splitting/nuclear transfer)
- Asepsis
- PCR
- Gene therapy
- Use of bacteria in biotechnology
Ecosystems:
- Improving productivity
- Succession (application)
- Nitrogen cycle (detailed)
- Conservation and the Galapagos
Response:
- Apical dominance
-Sympathetic/parasympathetic pathways
- Muscles (almost certain) & sliding filament model
- Dopamine and its effects
Reply 67
What could they ask us on body plans?
I thought it was quite a small section..
Reply 68
Original post by hannonl
What could they ask us on body plans?
I thought it was quite a small section..


the most i've seen on it so far is: define a homeobox gene, define a homeobox sequence, how would a mutation in the homeobox genes affect an organism

the textbook barely even covers homeobox, and the section that does just bangs on about drosophila... not really helpful
Reply 69
Original post by Arima
the most i've seen on it so far is: define a homeobox gene, define a homeobox sequence, how would a mutation in the homeobox genes affect an organism

the textbook barely even covers homeobox, and the section that does just bangs on about drosophila... not really helpful


yeah, all i know is what a homeobox gene does and what the homeodomain is. That's all that's in my revision guide and cgp books.
in jan 2010 they had an 8 mark question on it but it was combined with protein synthesis and you could get all the marks from just writing about that and saying the word homeobox idek
I just wana point out the unofficial mark scheme was on the other bio chat

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Reply 71
Original post by sfarquhar0
Also, this is a good paper for predictions (F214);

http://crashmaths.com/wp-content/uploads/2016/02/F214-Paper-1.pdf

Is there an F215 paper like this?
Reply 72
Original post by dahlx
Not sure if this was directed at me, but I thought I'd share my list anyway! It's mainly just a guess from what came up last year and the year before that (and I happened to guess fairly accurately for the F212 exam on Tuesday so hopefully my luck will continue haha). I've split the list into two sections, one being topics/questions that came up last year and therefore might be unlikely come up again, and topics that didn't come up so may be in this years paper. Ideally you should revise everything, but with only about a week to the exam, you kind of have to prioritise topics (or at least I do anyway):

F214 - Topics that came up in 2015:
Structure and how adaptations relate to functionality of chloroplasts
Limiting factors of photosynthesis
Adrenaline
Insulin secretion
Where reactions happen within the mitochondria
Anaerobic vs Aerobic respiration
Dialysis
Motor Neurone structure vs Sensory Neurone structure
Homeostasis

F214 - What could come up this year:
Action potentials and depolarisation
Synapses
Ornithine cycle
Osmoregulation
General kidney function
1st/2nd messengers
Control of heart rate
Structure of liver lobules
Oxidative phosphorylation and respiration in general (as wasn't in last years exam)
Diabetes - causes of, treatments etc
The pancreas - glucose regulation with insulin and glucagon etc.

Those are just what I'll personally be cramming before the exam, but OCR seem to like catching people out with unlikely questions on topics... so best to cover everything the best you can!


do you have any for f215
Reply 73
Original post by lolpool
do you have any for f215


they've posted them at the bottom of the first page lol
Reply 74
Original post by Arima
they've posted them at the bottom of the first page lol


im not asking the same person, there are 2 different people doing predictions on this thread lol
Original post by sfarquhar0
F215:

Biotechnology:
- Cloning animals (embryo splitting/nuclear transfer)
- Asepsis
- PCR
- Gene therapy
- Use of bacteria in biotechnology



By 'Use of bacteria in biotechnology', did you mean like the batch and continuous culture methods?
Reply 76
Original post by lolpool
do you have any for f215


Sorry this is a bit last minute. Last years paper was... weird to say the least - lots of really odd stuff in there. Hopefully this years will be a little more 'on spec', especially after F214!

What came up in 2015:
Causes of genetic variationPredator/prey relations
Factors affecting population size
PCR
Mutations
Speciation
Chi Squared
Trophic levels and efficiency
Behaviour(innate vs learned)
Natural cloning
Polyploidy
Plant/Human responses to light
Effects of smoking (???)
The brain

What could come up this year:
Body plans
Apoptosis
Translation/transcription(long question likely, as didn’t come up last year or in F212 paper)
Epistasis
Hardy-Weinberg
Artificial Cloning Plants/Animals
Growth Curve– Primary/Secondary metabolites
Industrial Enzymes/Immobilisation
Improving productivity
Sequencing Genomes
Genetic Engineering (Golden Rice/Insulin)
Succession
Nitrogen cycle/Use of decomposers
Conservation and the Galapagos
Plant hormones (Giberillins/Ethene)
Learned Behaviour
Sympathetic/parasympathetic pathways
Muscles &sliding filament model (very likely)
Dopamine Receptors(application question likely?)
(edited 7 years ago)
Original post by dahlx
Sorry this is a bit last minute. Last years paper was... weird to say the least - lots of really odd stuff in there. Hopefully this years will be a little more 'on spec', especially after F214!

What came up in 2015:
Causes of genetic variationPredator/prey relations
Factors affecting population size
PCR
Mutations
Speciation
Chi Squared
Trophic levels and efficiency
Behaviour(innate vs learned)
Natural cloning
Polyploidy
Plant/Human responses to light
Effects of smoking (???)
The brain

What could come up this year:
Body plans
Apoptosis
Translation/transcription(long question likely, as didn’t come up last year or in F212 paper)
Epistasis
Hardy-Weinberg
Artificial Cloning Plants/Animals
Growth Curve– Primary/Secondary metabolites
Industrial Enzymes/Immobilisation
Improving productivity
Sequencing Genomes
Genetic Engineering (Golden Rice/Insulin)
Succession
Nitrogen cycle/Use of decomposers
Conservation and the Galapagos
Plant hormones (Giberillins/Ethene)
Learned Behaviour
Sympathetic/parasympathetic pathways
Muscles &sliding filament model (very likely)
Dopamine Receptors(application question likely?)



Would it be bad to just focus on the stuff in the list as I've had so many exams in the last week and have another exam on the same day as F215 and I'm having to cram for this
Original post by dahlx
Sorry this is a bit last minute. Last years paper was... weird to say the least - lots of really odd stuff in there. Hopefully this years will be a little more 'on spec', especially after F214!

What came up in 2015:
Causes of genetic variationPredator/prey relations
Factors affecting population size
PCR
Mutations
Speciation
Chi Squared
Trophic levels and efficiency
Behaviour(innate vs learned)
Natural cloning
Polyploidy
Plant/Human responses to light
Effects of smoking (???)
The brain

What could come up this year:
Body plans
Apoptosis
Translation/transcription(long question likely, as didn’t come up last year or in F212 paper)
Epistasis
Hardy-Weinberg
Artificial Cloning Plants/Animals
Growth Curve– Primary/Secondary metabolites
Industrial Enzymes/Immobilisation
Improving productivity
Sequencing Genomes
Genetic Engineering (Golden Rice/Insulin)
Succession
Nitrogen cycle/Use of decomposers
Conservation and the Galapagos
Plant hormones (Giberillins/Ethene)
Learned Behaviour
Sympathetic/parasympathetic pathways
Muscles &sliding filament model (very likely)
Dopamine Receptors(application question likely?)


Awesome

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Reply 79
The synoptic part of f214 threw me as I couldn't remember the structure of a nucleotide .. Does anyone have any ideas on what they could include in f215??

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