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Chemistry of Biology
diffusion, osmosis, passive transport, active transport,
31
Biology
11th Grade
09/28/2010
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Term
Active Transport
 Definition
molecular movement: the movement of substances across cell membranes from low to high concentrations, requiring energy and proteins that act as carriers
Term
Active Site
 Definition
Its the portion of enzyme on which the substrate attaches and the chemical change occurs
Term
ATP
 Definition
1. organic chemical compound: a chemical compound nucleotide in living organisms that releases energy for 1. organic chemical compound: a chemical compound nucleotide in living organisms that releases energy for cellular reactions when it converts to ADP.
Term
Bonds
 Definition
force binding atoms into molecules: a force resulting from the redistribution of energy contained by orbiting electrons, which tends to bind atoms together to form molecules
Term
Cell membrane
 Definition
membrane around cell: the membrane that surrounds the cytoplasm, through which substances pass in and out of the cell
Term
Chemical reactions
 Definition
process involving changes to substances: a process that changes the molecular composition of a substance by redistributing atoms or groups of atoms without altering the structure of the nuclei of the atoms
Term
Covalent bond
 Definition
A chemical bond formed by the sharing of one or more electrons, especially pairs of electrons, between atoms
Term
Diffusion
 Definition
movement of particles from an area of high concentration to an area of low concentration.
Term
Electromagnetic
 Definition
Term
Endothermic
 Definition
absorbing heat: describes a chemical reaction in which heat is absorbed
Term
Enhancers
 Definition
Term
Entropy
 Definition
measure of disorder: a measure of the disorder that exists in a system
Term
Enzymes
 Definition
A protein (or protein-based molecule) that speeds up a chemical reaction in a living organism
Term
Equilibrium
 Definition
The forward reaction and the reverse reactions occur at the same rate when a system
Term
Exothermic
 Definition
chemical reaction that produces heat.
Term
Facilitated transport
 Definition
The transport of certain materials across a cell membrane, down a concentration gradient, assisted by enzyme like carrier proteins embedded in the membrane and without the explicit provision of energy.
Term
Homeostasis
 Definition
The ability of a system or living organism to adjust its internal environment to maintain a stable equilibrium. Keeping things the same....
Term
Hydrogen bonds
 Definition
Term
Inhibitors
 Definition
Term
Ionic bond
 Definition
Term
Osmosis
 Definition
Term
Passive transport
 Definition
Term
Heat
 Definition
Term
pH
 Definition
Term
Polar bond
 Definition
Term
Products
 Definition
Term
Proteins
 Definition
Term
Reactants
 Definition
Term
Salinity
 Definition
Term
Substrate
 Definition
Term
 Definition
Its the portion of enzyme on which the substrate attaches and the chemical change occurs
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