Flashcards in Chapter 1 Deck (21)
What are 2 ways of studying living things?
What's involved in the scientific method?
Propose explanation and hypothesis
Use a control: varies in 1 aspect
If a hypothesis is tested many times and is irrefutable it is a ____?
What are laws?
something consistently observed, mathematically defined, but incompletely explained
What two theories define biological sciences?
Theory of Evolution
What is the Cell Theory
All living things are composed of cells
All cells must come from pre-exsisting like cells
When were cells discovered?
What did Robert Hooke do?
more modern microscopes
Who discovered animalcules?
Where do cells come from?
pre-exsisting cells (Pasteur proved this)
What is the Theory of Evolution?
Descent from common ancestor with modifications
Darwin - observations (occurs by nature)
What is Natural Selection?
Environment chooses individuals within a population
Adaptions - heritable traits that increase fitness
Artificial selection - through producing things w/ specific traits
Why is evolutions a core theme?
It ties together unity(DNA, amino acid) and diversity(1.7 million living species)
How is live different?
What is taxonomy?
a classification grouping system developed by Linnaeu
List all the taxons.
What are Eukaryotes?
cells with a nucleus
single or multicelled (humans)
What are Prokaryotes?
no nucleus/ membranous organelles
How are living things alike?
Live exhibits order
Tendency to evolve
Organisms require energy and nutrients
Organisms sense and respond to change
Organisms use DNA
What is the Reductionist approach?
organize life's components into levels
understand small and continue to big