OCR A A-Level Biology Unified Biology [21st June 2023] Exam Chat

Original post by K_2004sNerd

How is everyone revising for this paper? I'm a bit lost

I’m doing past papers then if i have time i’ll do the blurting method for topics i don’t know well. Also make sure to know the calculations that haven’t come up e.g harry weinberg for biodiversity

Reply 81

Elsieviolet

6

Original post by DS13990609

Expecting a link between DNA (module 2) and PCR (module 6)
Maybe Stem cells (module 2) to diabetes treatment (module 5)
Respiration and Photosynthesis
Haven't seen much about ECGs or those P, Q, R S wave diagrams - maybe link that to heart rate practical or adrenaline fight or flight response idk

I'll prepare some topics later, but this is all I can think of

there was a big question in ECGs last year

Reply 82

secretiveplotter

7

Original post by Teribblestudent

I made some really stupid mistakes too

Same, I cried so much after realizing my mistakes.

Reply 83

secretiveplotter

7

Does any one know how each total marks in each of the papers adds to the final grade?

Reply 84

Elsieviolet

6

hey! so i've been doing past papers, and i don't now if its just from the old spec but i have seen a couple of questions about mammal behaviours such as imprinting onto young, conditioning and innate behaviours. does anyone know where this comes up in the spec as i've never revised it or seen it before

Reply 85

livssd

3

is there a google doc with predictions etc like there was for paper 1 and 2

Reply 86

emilia 1234

6

Original post by Elsieviolet

hey! so i've been doing past papers, and i don't now if its just from the old spec but i have seen a couple of questions about mammal behaviours such as imprinting onto young, conditioning and innate behaviours. does anyone know where this comes up in the spec as i've never revised it or seen it before

im not too sure maybe classification?

Reply 87

agdtdydy

7

Original post by secretiveplotter

Does any one know how each total marks in each of the papers adds to the final grade?

I'm pretty sure that they add up your marks and then compare it to the grade boundaries

Reply 88

lhq20054

13

Original post by secretiveplotter

Does any one know how each total marks in each of the papers adds to the final grade?

I don't think they have any particular weighting. They just add up all the marks and then use the grade boundaries :smile:

Reply 89

emma85736

11

Original post by Elsieviolet

hey! so i've been doing past papers, and i don't now if its just from the old spec but i have seen a couple of questions about mammal behaviours such as imprinting onto young, conditioning and innate behaviours. does anyone know where this comes up in the spec as i've never revised it or seen it before

hey!! this is old spec so we don't need to know - i asked the same question on the Paper 1 forum

Reply 90

Ghostlady

21

Daughters school has not done any unified biology papers at all. So we printed off 2017, 2018 and 2019. So far shes given 2017 and 2018 a go this weekend and from the grade bounderies back then she got a C. She was a couple of marks off a B on both times which is what she needs for first choice at uni.

Both sets of papers had a table of results and from those set of results discuss ways to improve the method of the experiment and also the presentation. So things like put into a graph rather than a table. Having light intesity as a unit of measure as not mentioned in the table. Eliminating / limiting other factors which can affect the experiment. They seemed to be a similar way of thinking between 2017 and 2018's paper, and they were big marker questions too. I think something like this will crop up again.

Another thing we noticed is looking at things as a whole. Like in 2018 paper ''Explain why temperature has a greater effect on the rate of the light-independent stage''
Like we got high temperature, more kinetic energy, but did not think at all about enzymes such is Rubisco having sucessful collisions/denatured. So we are going to go through photosynthese step by step, whats made, what causes it to be made, what can cause the stoppage of it being made.

Reply 91

Lizzie3232

5

How likely do you guys think it is that more questions on transport in animals comes up?

Reply 92

birds1783

Original post by lhq20054

I don't think they have any particular weighting. They just add up all the marks and then use the grade boundaries :smile:

I'm pretty sure paper 1 and two are multiplied by 1.33 but paper 3 is just what it is alone

Reply 93

siahateskwl

11

Original post by Ghostlady

Daughters school has not done any unified biology papers at all. So we printed off 2017, 2018 and 2019. So far shes given 2017 and 2018 a go this weekend and from the grade bounderies back then she got a C. She was a couple of marks off a B on both times which is what she needs for first choice at uni.

Both sets of papers had a table of results and from those set of results discuss ways to improve the method of the experiment and also the presentation. So things like put into a graph rather than a table. Having light intesity as a unit of measure as not mentioned in the table. Eliminating / limiting other factors which can affect the experiment. They seemed to be a similar way of thinking between 2017 and 2018's paper, and they were big marker questions too. I think something like this will crop up again.

Another thing we noticed is looking at things as a whole. Like in 2018 paper ''Explain why temperature has a greater effect on the rate of the light-independent stage''
Like we got high temperature, more kinetic energy, but did not think at all about enzymes such is Rubisco having sucessful collisions/denatured. So we are going to go through photosynthese step by step, whats made, what causes it to be made, what can cause the stoppage of it being made.

same im thinking 6 marker could be an evaluation question based on a graph/data/experiment

Reply 94

birds1783

Original post by Lizzie3232

How likely do you guys think it is that more questions on transport in animals comes up?

I'm guessing not likely cos they wanna test us on stuff we haven't done yet, maybe it would come up as small marks. a 6 marker would be the biggest violation ever lol

Reply 95

Lizzie3232

5

Original post by birds1783

I'm guessing not likely cos they wanna test us on stuff we haven't done yet, maybe it would come up as small marks. a 6 marker would be the biggest violation ever lol

I'd cry lol

Reply 96

taldris18

2

Original post by Lizzie3232

I'd cry lol

Idk why, but I have a feeling that there will be a big question on either the functions of the brain, or commercial use of plant hormones

Reply 97

Fire dude

10

Original post by idk222222222

topics that didn't show up in papers 1 and 2
-cell structure
-biological molecules (there was only experiments)
-nucleotides
-biological membranes
-exchange and transport
-classification and evolution
-animal responses
-PHOTOSYNTHESIS
-RESPIRATION
-cellular control
-pattern inheritance
-evolution
-manipulating genomes

pretty sure cytoskeleton was in paper 1 if i'm not going mad. also isn't cloning part of manipulating genomes? and pretty sure they overdid the exchange and transport with the heart stuff and the transpiration stuff in paper 1. no telling what there's gonna be in paper 3 though ocr are sneaky it seems

Reply 98

taldris18

2

Original post by Fire dude

pretty sure cytoskeleton was in paper 1 if i'm not going mad. also isn't cloning part of manipulating genomes? and pretty sure they overdid the exchange and transport with the heart stuff and the transpiration stuff in paper 1. no telling what there's gonna be in paper 3 though ocr are sneaky it seems