Bio chem
What is active transport?
a process in which cells use energy to move nutrient molecules from areas of higher concentration to lower concentration.
inorganic compound
Generally a compound whos molecules don't contain carbon atoms.
What is a nimby?
Someone who objects to the establishment in his or her neighbourhood of projects that are believed to be dangerous, unsightly, or otherwise undesirable
What is a nutrient?
a chemical in food used for energy, growth, body building, or cell repair
organic compound
generally, a compound whose molecules contain carbon atoms
trace element
mineral that the body requires in an amount of less than 100 mg per day
biomagnification
the process where chemicals accumulate in the tissues of organisms along the food chain. Biomagnification is also called bioaccumulation.
ethical
right and wrong
legal
according to the law
organic agriculture
the production of food with the use of feed or fertilizers of plant or animal origin and without the use of chemical fertilizers, growth stimulants, antibiotics, or pesticides
Pesticide
A chemical used to control bugs on crops.
acid
a substance soluble in water with a pH of less than 7. An acid turns blue vegetable colours to red colours.
base
a substance with a pH of more than 7. A base can be neutralized by an acid.
chemical indicator
substance containing a chemical that changes colour according to acidity or alkalinity
ph scale
a quantitative scale that indicates how acidic or alkaline a solution is
titration
the precise addition of a solution in a burette—or a graduated glass tube—into a measured volume of a sample solution
pollutant
a material or form of energy that will cause harm to living organisms
pollution
any alteration of the environment that produces a condition harmful to living things. The act of contaminating the environment with pollutants is pollution.