Cell Theory Flashcards
Cell
Basic unit of structure and function in an organism
Energy
Fuel for organisms
Organism
A living thing
Unicellular
Made up of 1 cell
Multicellular
Made up of more than 1 cell
Stimulus
Something that causes change or reaction
Sexual Reproduction
Production of life with sperm and egg
Asexual Reproduction
Production of life with life breaking into 2
Spontaneous Generation
Theory that non-living things can produce life (wrong)
Biogenesis
Theory that life comes from life
Redi
Scientist who proved spontaneous generation was wrong (flies, maggot, jars)
Spallanzani
Scientist who supported biogenesis (broth, bottles, fire)
Pasteur
Scientist who proved that life comes from life (broth, germs, S-shaped tube)
1st Principal of the Cell Theory
All living things are made up of cells
2nd Principal of the Cell Theory
A cell is the smallest unit of structure and function in a living thing
3rd Principal of the Cell Theory
All cells come from preexisting cells
1st Characteristic of Life
Made of 1 or more cells
2nd Characteristic of Life
Uses energy
3rd Characteristic of Life
Moves
4th Characteristic of Life
Respond to environmental changes
5th Characteristic of Life
Homeostasis - Maintain steady conditions
6th Characteristic of Life
Reproduce
7th Characteristic of Life
Grow and develop
8th Characteristic of Life
Adapt/Evolve
9th Characteristic of Life
Have a life span
