B2.1 - Key Words

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Biology

Cells

GCSE Combined Science

OCR Gateway

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14 Terms

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Active transport
Movement of molecules against their concentration gradient
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Cell cycle
The process of cell growth and division
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Concentration gradient
Difference in concentration between two regions
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Differentiation
Conversion of cell from unspecialised to specialised
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Diffusion
Net movement of particles from a place where there is a high concentration, to one where there is a low concentration
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DNA replication
Process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules
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Meristems
Growing region of a plant
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Mitosis
Process by which body cells divide
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Osmosis
Diffusion of water molecules from region of high water potential to low water potential through a selectively permeable membrane
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Mitosis
Process by which body cells divide
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Osmosis
Diffusion of water molecules from region of high water potential to low water potential through a selectively permeable membrane
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Specialised
A cell that is adapted to perform a particular function is called a specialised cell
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Stem cell
Undifferentiated cell
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Water potential
Concentration of free water molecules