Biology Flashcards
What is Biology?
It is the study of all living things
What 5 characteristics do all livings things share?
-Need Energy
-Produce waste
-Respond and adapt to the environment
-Reproduce
-Grow
What is cell theory?
- All organisms are composed of one or more cells
- The cell is the basic unit of structure and organization in organisms
3.All cells come from preexisting cells
What is another word for “Spontaneous Generation”?
Abiogenesis
What is Spontaneous Generation/Abiogenesis?
Early belief was that living life originated from the dead via a process called SPONTANEOUS GENERATION
Where did the belief of Abiogenesis come from?
Based off of a observation of maggots on dead meat.
Who is Francesco Redi? And what was his experiment?
He was the first documented person to conduct an experiment that contradicts Aristotle’s Abiogenesis. He did the maggots on meat experiment.
Explain Redi’s experiment in greater detail. Ex) Observation, Hypothesis + Conclusion
He suspected that the maggots that appeared on rotting meat did not actually arise from the meat itself.
Redi had observed flies depositing objects on the meat.
He hypothesized that
maggots hatched from the
objects dropped by the flies.
What is a controlled variable in an experiment?
Any factor that is held constant throughout experiment. Ex) Amount of water, temp… etc.
What is a manipulated/independent variable?
The one thing that is changed during the experiment. Ex) Amount of liquid, etc.
What is the responding/dependent variable?
What is measured/observed to determine what the independent variable changed. Ex) Growth rate of plant.