Biology Definitions

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  • Created by: issyg
  • Created on: 13-02-14 12:57
Evolution
the cumulative change in the heritable characteristics of a population
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Simple Diffusion
the passive movement of molecules from a high concentration to a low concentration
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Facilitated Diffusion
diffusion involving channel proteins embedded in the membrane
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Osmosis
the passive movement of water molecules across a partially-permeable membrane from a high concentration to a low concentration
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Active Transport
the active movement of molecules using protein pumps embedded in the membrane from a low concentration to a high concentration
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Enzyme
globular protein which acts as a catalyst for biochemical reactions
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Active site
region on an enzyme's surface to which substrates can bind
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Denaturation
a structural change in a protein that results in the loss of its function
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Cell Respiration
the controlled release of energy from organic compounds in cells to form ATP
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Substrate-level Phosphorylation
a single reaction involving the direct transfer of a phosphate group from a donor molecule to ADP
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Oxidative Phosphorylation
a series of oxidation reactions that produce sufficient energy to form ATP from ADP and phosphate
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Chemiosmosis
the diffusion of ions across a selectively-permeable membrane down a solute potential gradient
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Pathogen
an organism or virus that causes a disease
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Antigen
a foreign substance which stimulates the production of antibodies
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Card 2

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the passive movement of molecules from a high concentration to a low concentration

Back

Simple Diffusion

Card 3

Front

diffusion involving channel proteins embedded in the membrane

Back

Preview of the back of card 3

Card 4

Front

the passive movement of water molecules across a partially-permeable membrane from a high concentration to a low concentration

Back

Preview of the back of card 4

Card 5

Front

the active movement of molecules using protein pumps embedded in the membrane from a low concentration to a high concentration

Back

Preview of the back of card 5
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