terms
cell
smallest unit of life
organ system
group of organs that work together to perform a specific function
amino acid
Building blocks of protein
dependent variable
The measurable effect, outcome, or response in which the research is interested.
experiment
A research method in which an investigator manipulates one or more factors to observe the effect on some behavior or mental process
tissue
group of similar cells that perform a particular function
population
group of individuals of the same species that live in the same area
atom
Basic unit of matter
electron
A subatomic particle that has a negative charge
Experimental group
the group in an experiment that receives the variable being tested
organ
group of tissues that work together to perform closely related functions
ecosystem
A biological community of interacting organisms and their physical environment.
carbohydrate
compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body
element
a pure substance made of only one kind of atom
glucose
A simple sugar that is an important source of energy.
organism
An individual living thing
biome
A group of ecosystems that share similar climates and typical organisms
control group
in an experiment, the group not exposed to the treatment; contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment
enviroment
the surroundings or conditions in which a person, animal, or plant lives or operates
Hydrocarbon
Compounds composed of only carbon and hydrogen
community
All the different populations that live together in an area
biosphere
Consists of all life on Earth and all parts of the Earth in which life exists, including land, water, and the atmosphere.
DNA
Deoxyribonucleic acid
Environmental science
The field of study that looks at interactions among human systems and those found in nature
Hypothesis
A testable prediction, often implied by a theory