Exam (elaborations)
Neuronal communication
- Course
- Institution
Neuronal communication
[Show more]
Seller
Follow
studysolution
Reviews received
Content preview
1Save My Exams! – The Home of Revision
For more awesome GCSE and A level resources, visit us at www.savemyexams.co.uk/
Neuronal
communication.
Mark Scheme 2
Level A Level
SubjectBiology
Exam Board OCR
TopicCommunication, homeostasis and energy
Sub-Topic Neuronal communication
BookletMark Scheme 2
Time Allowed: 75 minutes
Score: / 62
Percentage: /100
Grade Boundaries:
A* A B C D E U
>85% 77.5% 70% 62.5% 57.5% 45% <45%
, Save My Exams! – The Home of Revision
For more awesome GCSE and A level resources, visit us at
www.savemyexams.co.uk/
Question Answer Marks Guidance
1 (a) Mark the first answer. If the answer is correct
and an additional answer is given that is
incorrect or contradicts the correct answer
cell signalling ; then = 0 marks
1
1 (b) (i) Mark the first answer. If the answer is correct
and an additional answer is given that is
incorrect or contradicts the correct answer
then = 0 marks
synaptic (cleft / space / gap) ;
ALLOW synapse
1 DO NOT CREDIT synoptic / synopse / synapsis
, Save My Exams! – The Home of Revision
For more awesome GCSE and A level resources, visit us at
www.savemyexams.co.uk/
Question Answer Marks Guidance
1 (b) (ii) DO NOT CREDIT a mark point if stated that
complete vesicles (even if
containing neurotransmitter)
are involved
1 (named) neurotransmitter / acetylcholine , released
from 1 release of neurotransmitter must be clearly
pre-synaptic / first , cell / membrane ; stated
2 diffuses across , gap / cleft / synaptic cleft
or 2 IGNORE synapse
reaches second , neurone / cell / membrane , by
diffusion ;
3 attaches to , receptors / binding sites of sodium 3 DO NOT CREDIT post-synaptic knob / bulb
channels ,
on post-synaptic membrane / membrane of second Note that a statement reading:
cell ; ‘Diffuses across and attaches to receptors on the
post-synaptic membrane’ = 2 marks (mps 2 &
2
3)
max
1 4 CREDIT ref to action of
4 neurotransmitter / acetylcholine , broken down (in
cholinesterase Use of three terms
cleft) ; QWC – technical terms used appropriately and
from:
spelt correctly ; neurotransmitter, acetylcholine,
pre-synaptic / presynaptic, diffuse /
diffusion, synaptic cleft, receptor,
post-synaptic / postsynaptic
Please insert a QWC symbol next to the
pencil icon, followed by
a tick (🗸) if QWC has been
awarded or a cross (🗴) if QWC
has not been awarded
You should use the green dot to identify
the QWC terms that you are crediting.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller studysolution. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.89. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now