Archive for the ‘12’ Category

Cell Membranes & Transportation – සෛල පටල හරහා පරිවහනය සිදුවන ආකාර

In cellular biology, membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes, which are lipid bilayers that contain proteins embedded in them. The regulation of passage through the membrane is due to selective membrane permeability – a characteristic of biological membranes which allows them to separate substances of distinct chemical nature. In other words, they can be permeable to certain substances but not to others.

Transport types
-Passive diffusion
-Active and co-transport
Secondary active transporter proteins
-Pumps
Membrane selectivity
-Electrolyte selectivity
-Non-electrolyte selectivity

This video will introduce you about all kinds of transportation techniques via cell membranes. This video clearly explains, make it simple to understand.

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Learn about Significant Figures – සාර්ථකාංක ගණනය කිරීම්

Here we bring you a few tutorials showing us to improve our knowledge about significant figures. Significant figures are important for Advanced level students as well as University students for their practicals and researches calculations.

උසස් පෙළ සිසුන්ට මෙන්ම විශ්ව විද්‍යාල සිසුන්ට ද එක සේ වැදගත් වන සාර්ථකාංක පිළිබද පාඩම් මාලාවක් මෙහි දැක්වේ.







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Vishakha Vidyalaya Colombo – 2011 – Grade 12 Final – Physics – Full

Here we’ll bring you Advanced Level Physics question paper of year 2011  created by Visakha Vidyalaya Colombo. Visakha Vidyalaya is a currently leading popular school in Sri Lanka, has marked a prominent place in Advanced Level Examination achievements. This is a full question paper including MCQ + Structured Essay + Essay.  Please share this resource with your friends as well as protect copyrights. This content is strictly prohibited using for any kind of commercial benefit.

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