Scientific Method and Characteristics of Life
Which axis is used for the dependent variable?
Y axis
species
a group of living things that can reproduce by interbreeding.
ecosystem
a group of populations and the nonliving things that affect them
Inference
a guess based on observations
organism
a living thing
Control group
a part of the experiment or a trial that does not include the independent variable, it is used for comparison in an experiment
Hypothesis
a prediction for the possible outcome of an experiment
Theory
a proposed answer for a scientific question which is supported by a large body of evidence.
experiment
a test of a hypothesis
DNA
a universal code which makes up the genetic material of organisms.
multicellular
adjective that describes an organism that is made of many cells: example tree
unicellular
adjective that describes an organism that is made of one cell, example: bacteria
development
all of the changes that an organism experiences through out its lifetime
adaptation
an inherited trait which gives an advantage to an organism in a population.
controlled variables
any thing in an experiment which must not change
biosphere
area around earth which supports life, includes air, water, soil
Which type of graph is appropriate for non-numerical categories?
bar graph
cell
basic unit of life
evolution
changes in the genetic make up of populations over time
quantitative data
data that is measured in numbers
qualitative data
data that is measured in words or pictures
stimulus
something that causes a response
metabolism
the chemical reactions that keep organisms alive by building up and breaking down materials
dependent variable
the data collected in an experiment
biodiversity
the number of different living things in an area
biology
the study of life
independent variable
the variable that is changed or tested by experimentors
In a line graph or scatter plot, which variable goes on the x axis?
Independent variable
If you would like to determine if a correllation exists between 2 sets of data, the best type of graph would be a ____________ ____________
LIne graph
homeostasis
maintaining constant internal conditions in an organism such as temperature, pH, amount of water etc.
Which type of graph is good for representing data which is presented as a percentage of a whole?
pie graph
reproduction
producing new individuals, which passes DNA on to offspring
