Diffusion: Revision Notes
Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration. Diffusion occurs in liquids and gases when their particles collide randomly and spread out.
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Simplifying Algebraic Equations
In order to understand anything in algebra, you have to have an understanding of what a term is. Terms are the building blocks of algebraic equations.
Mitosis Revision Notes and Practice Quiz
The mitosis process produces two identical diploid cells for the purpose of growth and repair after cell division.
Osmosis Quiz
The osmosis process involves the movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low concentration.
Active Transport Revision Notes and Practice Quiz
By moving through the cell membrane, substances can enter and leave the cell. Three of the most common types of movement are diffusion, osmosis, and active transport.
Percentages: Maths
To get you introduced to percentages, we will go through 3 different types of percentage questions that come up in GCSE Maths.
Microscopy: Biology
Microscopy is an essential tool for scientific research and analysis, allowing us to observe and study objects that are too small to be seen with the naked eye. GCSE Science students must understand the principles of microscopy and the different types of microscopes and their uses.
Exchange Surfaces Revision Notes and Practice Quiz
Substances dissolved in water are called soluble. In order to survive, living organisms must be able to exchange dissolved substances with their environment. Surface area and size affect the pace at which this can occur.
Culturing Microorganisms Revision Notes and Practice Quiz
The most common way microorganisms are grown (cultured) is in a "culture medium", a combination of carbohydrates, minerals, proteins and vitamins. A nutrient broth solution or solid agar jelly can be used as the culture medium.
Binary Fission Revision Notes and Practice Quiz
Bacteria and other prokaryotic cells replicate by a process known as binary fission. Cells that undergo binary fission make copies of their genetic material, then split into two daughter cells.
Stem Cells Revision Notes and Practice Quiz
Stem cells are cells that have NOT yet been differentiated. They are not yet specialised. Some cells do not become specialised yet, but are called undifferentiated.
AQA: GCSE Maths Exam Papers
Download AQA GCSE Mathematics past exam papers to practice so that you prepare yourself for your final exam.
AQA: GCSE Science Exam Papers
Download AQA GCSE Science past exam papers to practice so that you prepare yourself for your final exam.