Summary
Summary AQA ALEVEL BIOLOGY NOTES ON ACTIVE TRANSPORT
- Module
- Unit 2 - Cells
- Institution
- AQA
ALEVEL NOTES ON THE CELL TRANSPORT TOPIC- ACTIVE TRANSPORT ADJUSTED TO THE AQA SPECIFICATION AND MADE FROM MARKSCHEMES
[Show more]
Seller
Follow
Content preview
= Active Transport→
Active transport is the movement of molecules or ions into or out of a cell from a
region
of lower concentration to a
region
of
higher concentration
using ATP and carrier
proteins .
What are the differences between active and
passive forms of transport ?
In active transport :
Metabolic in form of ATP is needed
energy
•
-
Substances are moved against a concentration gradient
Carrier protein molecules involved
-
are
Selective process BI9
-
] [
*
Process of Direct Active Transport
iiiiliiiiiiliiii if
, → . #
I:L?Igsie ↳
1-
Substrate binds to the carrier
2
ATP in of the cell
binds a specific binding site on the inside
3 ATPase of ATP ADPTP
region catalyses the breakdown to
conformational
4
Energy released causes
change
Protein shape to
push substrate across membrane
changes
-
Substrate
binding site non
complementary to ADPTP
-
-
ejected
binding
-
ATP site is
5 The to
phosphate molecule released from protein revert to its
original shape .
Outside cell Insidec
-
=
-
-
=
-
:{
-
s.CN :÷
AT7
Molecules bind
% I :÷÷ :÷:*
µ
.
•
transported . •
membrane protein •
,
inside cell -
-
-
=
-
=
{
-P ADP
↳~
r
of
Binding a
>
.
.
a
÷:÷:
.
"
÷:
.
conformation
change -
to the protein
-
-
-
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 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 talhaahmed360. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £7.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67474 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now