Characteristics of Life
The study of life
Biology
a procedure done in a controlled environment for the purpose of gathering observations, data, or facts,
Experiment
The gradual change in a species over time.
Evolution
the smallest unit of matter indivisible by chemical means.
Atom
What is the most specific and smallest level of the classification hierarchy?
Species
a membrane-bound structure that occurs as a functional independent unit of life
Cell
a scientific explanation of a phenomenon.
theory
When the environment chooses traits that are most successful, this is called...
Natural selection
Cohesion
Artificial selection
Organisms that have only one cell
Unicellular
The value measured, which represents the extent of the effect of the independent variable
Dependant variable
Carolus Linnaeus devised a two-part naming system for organisms called ____________ ____________.
there is a transfer of an electron from one atom to another.
Ionic bond
The type of bond that forms between polar molecules
Hydrogen bond.
The mistaken idea that living things can arise from nonliving things.
Spontaneous generation
A _______ study is when two variable are measured, without manipulation of either variable, to determine if there is a relationship.
correlational
A diagram that shows probable evolutionary relationships amoung organisms is called a ______ diagram.
Phylogenetic tree/Cladogram
What is the function of enzymes?
to speed up chemical reactions/catalyst
Consists of two of the same atoms chemically bonded together
molecule
Involves only one parent and produces offspring that are identical to the parents
asexual reproduction
It is a variable that stands alone and isn't changed by the other variables you are trying to measure.
Independent variable
Structures that you have in the body that do not have a function are called...
vestigial structures
formed when an atom loses or gains one or more electrons.
Ion
Domain Bacteria and Archea are very similar. Give one example of how they differ from each other.
Archea can live in more extreme environments, and their cell structure and chemical makeup differs from Bacteria.