Agriculture Reference
In-Depth Information
Glossary
A
Action potential
An action potential is a short-lasting electrophysical event in which the electrical
membrane potential (i.e. voltage) of a cell rapidly rises and then falls.
Active transport
Active transport methods (e.g. using carrier proteins) that are used for pumping
molecules or ions against a concentration gradient, i.e. from low concentration to a
high concentration.
Adsorbed
Is the adhesion of atoms, ions, or molecules from a gas, liquid, or dissolved solid
to a surface, creating a film. As a result from electrolysis reactions within the soil,
it is expected that some charged compounds naturally found within the soil will be
adsorbedontotheelectrodeoftheoppositeelectricalcharge,e.g.Positivesodiumions
from the breakup of salt may attach themselves to the negative electrode.
Aeroculture
A method of growing plants without soil by suspending them above sprays that
constantly moisten the roots with water and nutrients. The advantage of this method
is that roots are exposed to high amounts of atmospheric oxygen.
Ammeter
Anammeterisanelectronicmeasurementdeviceusedtomeasureelectricalcurrentin
units of Amperes or Amps.
Anode
The positive electrode terminal.
Apiarist
A person who keeps an apiary, aka a beekeeper.
