TUTTEE ACADEMY LOGO
broken image
  • Home
  • About Us
  • Subjects 
    • CHEMISTRY
    • BIOLOGY
    • PHYSICS
    • MATHEMATICS
    • PSYCHOLOGY
    • ECONOMICS
    • BUSINESS
    • COMPUTER SCIENCE
    • CHINESE
    • ENGLISH
    • SPANISH
    • IBDP IA / EE
    • IBDP TOK
    • ONLINE TUTORIAL
  • Exam Boards 
    • IBDP
    • IBMYP
    • IGCSE & GCSE
    • HKDSE
    • GCE A-LEVELS
  • Courses 
    • IBDP Tuition
    • GCE A-Level Tuition
    • IBMYP Tuition
    • I/GCSE Tuition
    • HKDSE Tuition
  • Admission Test Prep 
    • PREDICTED GRADE
    • SAT / SSAT
    • UKISET (UK)
    • BMAT
    • UKCAT / UCAT
    • LNAT
    • TMUA (Cambridge)
  • Student Results 
    • IBDP STUDENT RESULTS
    • IGCSE & GCSE MATHEMATICS
    • A-LEVEL STUDENT RESULTS
    • IGCSE STUDENT RESULTS
    • GCSE STUDENT RESULTS (UK)
    • HKDSE STUDENT RESULTS
    • OUR STORIES
  • Question Bank
  • Resources
SCHEDULE A LESSON NOW

I/GCSE Biology - Active Transport

Materials Exchange in and out of the cells -  Active Transport

· IGCSE,Biology,Active transport,Exchange of material

In I/GCSE Biology, there are two ways that dissolved substances move in and out of Cells. 🤓

  • Diffusion is where Substances move along a concentration gradient which must be in the right direction for it to be useful to cells.
  • Osmosis depends on a concentration gradient of water and a partially permeable membrane. Only water moves in osmosis.

However sometimes substances needed by your body have to move against a concentration gradient (A difference in concentration levels), or across a partially permeable membrane. This process is known as active transport.

Active Transports 👇👇👇

  • Active transport occurs in plant roots to get nutrients from soil into cells
  • it also let marine animals to move the salt they take In from the sea into high concentrated salt glands.
broken image

Active transport allows cells to move substances from an area of low concentration to an area of high concentration (This is the opposite of Diffusion). 🧐🧐🧐

  • This means that substances move against the concentration gradient.
  • This also means that cells can absorb ions from very dilute solutions, and makes it possible for them to move substances like sugars and ions from one place to another through cell membranes.

It takes energy for the active transport system to carry a molecule across the membrane and then return it to its original position. This energy comes from Cellular Respiration. The higher the rate of respiration, the higher the rate of active transport. Cells involved in active transport, such as root hair cells and gut lining cells often have lots of mitochondria to provide the respiration energy needed.

That's the end of the topic!

broken image

CLICK HERE TO LEARN MORE ABOUT OUR I/GCSE BIOLOGY COURSES

SIGN UP FOR AN I/GCSE BIOLOGY TRIAL NOW

Drafted by Joey (Biology)

Reference:

http://lifeofplant.blogspot.com/2011/12/active-transport.html

Subscribe
Previous
I/GCSE Biology - The Importance of Classification
Next
I/GCSE Biology - Variation
 Return to site
Profile picture
Cancel
Cookie Use
We use cookies to improve browsing experience, security, and data collection. By accepting, you agree to the use of cookies for advertising and analytics. You can change your cookie settings at any time. Learn More
Accept all
Settings
Decline All
Cookie Settings
Necessary Cookies
These cookies enable core functionality such as security, network management, and accessibility. These cookies can’t be switched off.
Analytics Cookies
These cookies help us better understand how visitors interact with our website and help us discover errors.
Preferences Cookies
These cookies allow the website to remember choices you've made to provide enhanced functionality and personalization.
Save