Chromosomes carry genetic information in a molecule called DNA. A type of cell division called mitosis ensures process happens.
GCSE Maths, English and Science revision notes and quizzes to help you master your subjects efficiently. 🤓
Structure refers to how a text is organised and how its parts work together. The purpose of structuring a text is to influence the reader.
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.
The mitosis process produces two identical diploid cells for the purpose of growth and repair after cell division.
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.
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.
To get you introduced to percentages, we will go through 3 different types of percentage questions that come up in GCSE Maths.
Please download and print the PDF worksheet if you prefer to study using pen and paper. The worksheets have the same questions as the web-page version.
Cell biology is the study of cell structure and function, and it revolves around the concept that the cell is the fundamental unit of life. Focusing on the cell permits a detailed understanding of the tissues and organisms that cells compose.
All living things are made of cells – they're the building blocks of every organism on the planet. But different organisms have different cell structures...
Microscopy is the objects, such study of very small as cells in science, using an instrument called a microscope.
Throughout our bodies, blood travels through blood vessels. There are three different types of blood vessels you should know about: Arteries, Capillaries and Veins.
Transporting materials between cells is necessary for multicellular organisms. Like many animals, the heart plays a key role in the human circulatory system, which transports blood around the body.
Your cells require oxygen for respiration, so you need to get it from the air into your bloodstream. You must also expel carbon dioxide from your bloodstream. All of this occurs in your lungs. Your lungs are forced to take in and expel air when you breathe.
There are trillions of cells in multicellular organisms like humans. Those cells have to work together to keep the organism going, which requires organisation.
You need to know about a few examples of exchange surfaces. Mammals exchange gases in their lungs and absorb nutrients in their small intestines. In plants, gas exchange occurs in the leaves. In fish, gas exchange occurs in the gills.
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.