MYTUTOR SUBJECT ANSWERS

308 views

What is osmosis and how does it work?

Osmosis is basically the movement of water across a semi-permeable barrier (i.e. a barrier that lets some molecules through but not others - like a cell membrane). Usually, the water muct move down something called a concentration gradient, which I will explain with an example.

Imagine that you have a tank of water, with a semi-permeable barrier splitting it in two. On one side of the tank, the water is 80% pure, but on the other side of the tank the water is only 40% pure. During osmosis, the water molecules will move through the semi-permeable from the area of high concentration (i.e. the 80% side) to the area of low concentration (i.e. the 40% side) until there is an equilibrium (i.e. until there is no overall movement of molecules). 

Hope that helps!

Emma S. GCSE English Literature tutor, A Level English Literature tut...

8 months ago

Answered by Emma, a GCSE Science tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

57 SUBJECT SPECIALISTS

£18 /hr

Laura C.

Degree: Chemistry (Masters) - Durham University

Subjects offered: Science, Maths+ 3 more

Science
Maths
Chemistry
Biology
-Personal Statements-

“Hello, I'm Laura. I know how hard GCSEs and A Levels are and the stress they can cause. I also know how beneficial having a friendly undestanding person to help can be. For me, that was my sister. For you, I hope that can be me.  I'm...”

£18 /hr

Adam R.

Degree: French and German (Bachelors) - Oxford, The Queen's College University

Subjects offered: Science, Politics+ 9 more

Science
Politics
German
French
Extended Project Qualification
English and World Literature
English Literature
English Language
Economics
Chemistry
.MLAT (Modern Languages)

“Hi there! I am a second year linguist at Oxford University. Although French and German are my speciality, I take a strong interest in all facets of education: arts, sciences, humanities, and social sciences. In order to excel in one's ...”

MyTutor guarantee

£22 /hr

Raj K.

Degree: Medicine (Bachelors) - Liverpool University

Subjects offered: Science, Physics+ 6 more

Science
Physics
Maths
French
Chemistry
Biology
-Personal Statements-
-Medical School Preparation-

“About Me: I am a medical student at The University of Liverpool and have already completed a degree in Biochemistry at the University of Manchester. Hopefully, it goes without saying that it is clear that I love science and am hugely ...”

About the author

Emma S.

Currently unavailable: for regular students

Degree: Cognitive Neuroscience (Masters) - York University

Subjects offered: Science, Psychology+ 3 more

Science
Psychology
History
English Literature
Biology

“About me: I am a Masters student at the University of York, ahving finished my BSc in Psychology there last year.  Obviously, I am interested in Psychology (or I wouldn't have chosen it as my degree) so I can provide in-depth discuss...”

You may also like...

Posts by Emma

What are some common themes in gothic literature?

What is osmosis and how does it work?

Other GCSE Science questions

What are atoms?

What is osmosis and how does it work?

What is crude oil and how is petrol derived from it?

How does atomic size differ with groups in the periodic table?

View GCSE Science tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok