Start from the beginning, literally from photosynthesis all the way to DNA tech. It’s helpful to go through your spec and see exactly what u need to know and then read ur notes based on the spec points

yesssss this is the attitude im looking for! let's get this bread 💪

Reply 84

Kobisha

11

for required practicals i found this channel

https://www.youtube.com/channel/UCppXQnKK1fWe7uWT_Y-cHiw

but he doesn't have all of them on there yet - upto practical 9

he's been uploading them over the past two weeks.

more useful links

https://www.youtube.com/channel/UCKOG_dv2nMQSRKX0r1_n8gw/videos - the lady who makes videos on this website was unjaded jade's a level biology teacher

https://www.youtube.com/channel/UCQXFnAzACAnOAPVBv-QRNTQ - she's pretty good as well

but i don't know where to find information on the rest of the required practicals - except the aqa spec (too much detail on there)

Reply 85

n2001

17

do u guys have any predictions?

Reply 86

Kobisha

11

it's on the first page of this thread

Reply 87

GCSEStudent903

13

This is true - occasionally responses can be sent to the "team leader".

However, any changes will be put on the mark scheme for other applicable answers. And so, the mark schemes we see on the website are the final product they had used to mark - hence why, in the column, they have ALLOW this etc etc.

Original post by TomlHumphries

This is true. I spoke to a teacher outside of my college who is an examiner for biology exams. She said that they start with the standard mark scheme that was prepared months ago but if the examiner reads an answer that isn't on the mark scheme but they feel is correct, they pass it on to the head marker who will add it to the markscheme if necessary.

Reply 88

GCSEStudent903

13

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

See above

Original post by n2001

do u guys have any predictions?

Reply 89

n2001

17

thank you!

Original post by GCSEStudent903

See above

Good luck for tomorrow's paper guys :smile:

How are you all feeling for it?

Reply 91

W.A.Y

7

Do we need to know non cyclic and cyclic phosphorylation??? I have it down in my notes from class but i cant find it on kerboodle textbooks and its not on the spec. Also i use snap revise and they have lessons on photophosphorylation. Please help so confused

Reply 92

username3016694

10

Can someone explain the phosphorus cycle step by step? :smile:

Reply 93

Virolite

14

nah they're not gonna ask questions on cyclic vs non-cyclic phosphorylation just the main principles that apply to both, so photoionization of electron, leaving chlorpohyll and the formation of a proton gradient etc etc

correct me if i'm wrong though :smile:

Original post by W.A.Y

Do we need to know non cyclic and cyclic phosphorylation??? I have it down in my notes from class but i cant find it on kerboodle textbooks and its not on the spec. Also i use snap revise and they have lessons on photophosphorylation. Please help so confused

Reply 94

UncleDad

differences between neuromuscular junction and synapse?

Reply 95

hasanalihussain5

6

Trying to remember all of the processes is hard, so freaking out a bit. Trying notecards now, after watching videos. There is so much to learn in such little time.

Good youtube channel is Tailored Tutors, watching at x1.25 speed.

Original post by Evil Homer

Good luck for tomorrow's paper guys :smile:

How are you all feeling for it?

Reply 96

Virolite

14

neuromuscular junctions link neurons to muscles, don't form new action potentials and excitatory only

Original post by UncleDad

differences between neuromuscular junction and synapse?

Reply 97

Virolite

14

good mate, but can't help feeling anxious as I need my grade to meet my offers

Original post by Evil Homer

Good luck for tomorrow's paper guys :smile:

How are you all feeling for it?

Reply 98

hasanalihussain5

6

You need to say more than that btw.
Neuromuscular junctions have more receptors (known as nicotinic cholinergic receptors)
They have acetylcholine esterase in clefts (little pits) between the receptors
The acetylcholine is always in excitatory in neuromuscular junctions (so when there is an action potential, there is always a response which isn't always the case in synapses)

Hope this helped :biggrin:

Original post by UncleDad

differences between neuromuscular junction and synapse?

Original post by Virolite

neuromuscular junctions link neurons to muscles, don't form new action potentials and excitatory only

Reply 99

UncleDad

My g

Original post by hasanalihussain5

You need to say more than that btw.
Neuromuscular junctions have more receptors (known as nicotinic cholinergic receptors)
They have acetylcholine esterase in clefts (little pits) between the receptors
The acetylcholine is always in excitatory in neuromuscular junctions (so when there is an action potential, there is always a response which isn't always the case in synapses)

Hope this helped :biggrin:

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

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