Chapter 1
element
CO2, H2O, NaCl
These are
chemical formulas
Organelle that helps keep the cell clean
lysosomes
The more accurate way to age a fossil?
absolute age dating
How old is Earth?
about 4.6 billion years
N + O ---> NO
CaS + P ---> CaSP
CLi ----> C + Li
These are?
chemical equations
How do you change state of matter
add or remove thermal energy
(increase or decrease)
When a substance leaves the cell
exocytosis
Fossil that shows the organisms activity & behavior
Trace fossil
Describe 2 things about the Hadean eon
Hot, Earth covered in molten rock, many asteroid impacts, toxic atmosphere, Earth's layers formed
Name 3 physical properties
state, mass, boiling pt, melting pt, freezing pt, solubility, etc
What does a catalyst do?
speeds up a chemical reaction
fiber like network that gives the cell a framework of support & structure
cytoskeleton
What is comparative anatomy?
studying the similarities & differences among anatomy of different species
A timeline of Earth's history
geologic time scale
Name 3 chemical properties
ability to rust, burn, decompose
Balanced or unbalanced?
Ni4 + C6O ---> 2Ni4C3 + O
unbalanced
What are these: lipids, nucleic acid, carbohydrates, proteins
macromolecules
What is embryology?
study of development from fertilization to birth
Earthquake, volcano, ocean formation, climate change
gradual environmental changes
If the mass of the products is 10 g, what was the mass of the reactants?
10 g
An explanation for a pattern in nature
scientific theory
3 parts of the cell theory
cells are the smallest unit of life
living things are made of 1 or more cells
all cells come from preexisting cells
Difference between extinction & mass extinction
extinction- 1 species
mass extinction- many species
Why is the Great Oxygenation Event also called a catastrophe?
many organisms couldn't adapt to the sudden increase in oxygen