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The membrane around the contents of a cell which controls what moves in and out of the cell.
A rigid structure which surrounds the cells of living organisms apart from animals.
The water-based gel in which the organelle of all living cells are suspended.
The gradient between an area where a substance is at a high concentration and an area where it is at a low concentration.
The net movement of particles of a gas or a solute from an area of high concentration to an area of low concentration (along a concentration gradient).
The organ system running from the mouth to the anus where food is digested.
The tissue of the epidermis - the outer layer of an organism.
Tissue made up of relatively unspecialised cells which line the tubes and organs of the body.
The tissue which makes up the glands and secretes chemicals e.g. enzymes, hormones.
The tissues in a plant in which photosynthesis occurs.
An organism which is made up of many different cells working together. Some of the cells are specialised to carry out particular functions.
An instrument used to magnify specimens using lenses and light.
The green pigment contained in the chloroplasts.
The overall movement of...
The organelle in which photosynthesis takes place.
The tissue that makes up the muscles. It can contract and relax.
An organelle found in many living cells. It contains the cell's genetic information.
A group of different tissues working together to carry out a particular function.
A group of different organs working together to carry out a particular function.
A space in the cytoplasm filled with cell sap that is present all the time.
The living transport tissue that carries sugars around plants.
Extra circles of DNA found in bacterial cytoplasm.
The region of the digestive system where the majority of digestion occurs.
Adapted for a particular function.
A group of specialised cells all carrying out the same function.
The non-living transport tissue in plants, which transports water around the plant.