Biology 9 weeks test study guide Flashcards
(24 cards)
observation
the process of gathering information about events or processes in a careful, orderly way.
data
the information gathered from observations
inference
a logical interpretation based on prior knowledge or experience
hypothesis
a proposed scientific explanation for a set of observations
spontaneous generation
scholars of the day even gave a name to the idea that life could arise from nonliving matter
manipulated variable
the variable that is deliberately changed
responding variable
variable that is observing and changes in response to the manipulated variable
theory
a particular hypotheses may become so well supported that scientist consider it as a theory
biology
the study of living things
compound light microscope
allow light to pass through the specimen and use two lenses to form an image.
cell
a collection of living matter enclosed by a barrier that separates the cell from its surrounding
metabolism
the combination of chemical reactions through which an organism builds up and breaks down
homeostasis
the process by which they do
evolve
evolution
metric system
a decimal system of measurements whose units are based on certain physical standards and are scaled on multiples of 10
cell culture
cell is able to reproduce so that a group of cells develops from the single original cell
atom
basic unit of matter
nucleous
small, dense region within most nuclei in which the assembly of proteins begins
electron
negatively charged particle; located outside the atomic nucleous
element
substance consisting entirely of 1 type of atom
proton
positive charge
neutron
no charge
isotope
atom of an element that has a number of neutrons difference from that of other atoms of the same element
Science
an organized way of using evidence to learn about the natural world
