bio test oorah Flashcards
(26 cards)
What is biology?
the scientific study of the natural world with a focus on life
Define homeostasis
ability to maintain internal stability during environmental changes
Classification system (taxa): from largest to smallest
d > k > p> c > o> f > g> s
o
The four kingdoms
protista, animalia, fungi, and plantae
Defining features of humans
Bipedalism, Opposable thumbs, Large brain, Capacity for language
Step 1 scientific method
Observe and generalize
step 2 scientific method
Formulate a hypothesis
step 3 scientific method
Make a testable prediction
step 4 scientific method
Experiment or observe
step 5 scientific method
Modify the hypothesis as necessary and repeat
Plasma membrane
prokaryotic and eukaryotic
no nucleus
prokaryotic
nucleus
eukaryotic
Cytoplasm
prokaryotic and eukaryotic
No true organelles
prokaryotic
Bacterial Cells are?
prokaryotic
Has organelles
Eukaryotic
Light microscope magnifies?
1000x
Light microscope use?
Used to view living samples
Transmission electron microscope used for?
Reveals internal details of a cell
Transmission electron microscope magnifies?
100,000x
Scanning Electron Microscope views?
3-D view of the cell’s surface
Scanning Electron Microscope magnifies?
100,000x
Cytoskeleton purpose
Maintains cell shape