So You Want to Be a Scientist
Observation
Experiment where only one variable is changed
Controlled Experiment
The combination of chemical reactions that organisms use to build up and break down materials
Metabolism
Group of similar cells that perform a particular function
Tissue
Coined the word "cell" by looking at cork.
Robert Hooke
A logical interpretation based on prior knowledge and experience
Inference
Factor in a controlled experiment that is deliberately changed
Independent Variable
Signal to which an organism responds
Stimulus
Group of tissues that work together to perform a similar function
Organ
Created his own simple microscope, and used it to look at pond water. Discovered microorganisms.
Anton van Leeuwenhoek
Possible explanation for a set of observations or possible answers to a scientific question
Hypothesis
Variable that is observed or measured in a controlled experiment
Dependent Variable
Constant internal physical and chemical conditions that organisms maintain
Homeostasis
Groups of organs that work together to perform a specific function
Organ System
All plants are made of cells
Matthias Schleiden
Evidence; information gathered from observation and experimentation
Data
Group in an experiment that is exposed to the same conditions except for the independent variable
Control Group
Change over time
Evolve
Particle that replicates only by infecting living cells
Virus
All animals are made of cells.
Theodore Schwann
A well-tested explanation
Theory
The scientific study of life
Biology
Genetic material that is inherited from parent(s)
DNA
All living things are composed of cells; cells are the basic units of living things; cells are produced from existing cells
Cell Theory
Cells must come from preexisting cells.
Rudolph Virchow