Intro to biology Flashcards
dependent variable
variable in a scientific experiment that is affected by another variable, called the independent variable
evidence
any type of data that may be used to test a hypothesis
experiment
special type of scientific investigation that is performed under controlled conditions
hypothesis
possible answer to a scientific question; must be falsifiable
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independent variable
variable in a scientific experiment that is manipulated by the researcher to investigate its affect on another variable, called the dependent variable
model
representation of part of the real world
observation
anything that is detected with the senses
prediction
statement that tells what will happen under certain conditions
science
distinctive way of gaining knowledge about the natural world that tries to answer questions with evidence and logic
scientific investigation
plan for asking questions and testing possible answers
scientific law
statement describing what always happens under certain conditions in nature
scientific method
the process of scientific investigation
scientific theory
broad explanation that is widely accepted as true because it is supported by a great deal of evidence
adaptation
characteristic that helps living things survive and reproduce in a given government
biodiversity
the variety of life and it’s processes; including the variety of living organisms, the generic differences among them, and the communities and ecosystems in which they occur
biology
science of life, study of life
biome
group of similar ecosystems with the same general type of physical environment
biosphere
part of earth where all life exists, including life, water, and air
cell
basic unit of structure and function of living things
cell theory
theory that all living things are made up cells, all life functions occur within cells, and cells come from already existing cells
community
all of the populations of different spices that live in the same area
competition
relationship between living things that depend on the same resources in the same place and at the same time
ecosystem
all the living things in a given area together with the physical factors of the non-living government
evolution
change in the characteristics of living things over time, the change in species over time
gene theory
theory that the characteristics of living things are controlled by genes that are passed from parents to offspring
homeostasis
process of maintaining a stable environment inside a cell or an entire organism
natural selection
evolutionary process in which some living things produce more offspring than others so the characteristics of organisms change over time
organ
structure composed of more than one type of tissue that performs a particular function
organ system
group of organs to do a certain job
organism
all individual living thing
population
all the organisms of the same species that live in the same area