Unit 1
How We Do Science
How We Do Science
What are the factors of an independent and dependent variable?
Independent- Something you change
Dependent- Something you measure
What is a keystone species
An animal that is an integral part of the eco system
(keeps other animals in check)
What is evolution?
How organisms change overtime to thrive in their environment
What are the parts of a CER?
Claim, Evidence, and Reasoning
Ecology
The branch of biology that studies how organisms interact with their environment and other organisms
What are the three different types of graphs, when do you use them?
Bar Graph- When there's non numerical data (, animals)
Line Graph- When the independent variable directly affects the dependent variable
Scatter Plot- When data shows a relationship or correlation between 2 numerical values
(Bottom to top)
Producers, Primary consumers, Secondary consumers, Tertiary consumers
what is Natural Selection?
The system that picks out the losers and winners in an ecosystem. Not random.
What is a star?
A star is a huge sphere of very hot, glowing gas
Biotic and Abiotic
Biotic- is/was alive
Abiotic- has never been alive
What are the different prefixes for the metric system
(Biggest to smallest)
Giga, Mega, Kilo, (Base units: Liter, meter, gram), centi, milli, micro nano
(G, M, K, (L,m,g), c, m, ยต, n)
What do the arrows in a food webs represent?
Represents the flow of energy between animals
What is Adaptation?
Any heritable trait that helps an organism survive and reproduce in their environment
What are stars made of?
Gas made up of hydrogen and helium, which are the two lightest elements
Fitness
an organisms ability to survive and produce offspring
What are the two different microscopes?
Compound (The more complex one)
Dissecting
Why is the carbon cycle important?
CO2 is a necessary part of oxygen production from plants
Cladistics
A method of grouping organisms based off of characteristics to infer their revolutionary relationships
What is Nuclear fusion?
A process that allows stars to produce their own light. When lighter elements are forced to become heavier elements
Phenotype
Physical characteristics and an individuals observable traits such as eye color and height
How many trials should you preform per experiment?
3
What's the difference between prokaryotes and eukaryotes?
Prokaryotes- No nucleus, Archaea and Bacteria, no membrane bound organelles
Eukaryotes- Nucleus, plants, protists, fungi, etc., membrane bound organelles
What is a Derived Character?
Trait that arose in the most recent common ancestor of a particular lineage and was passed along to the descendants
What happens after a star runs out of fuel?
It ejects material back into space
Accuracy and Precision
Accuracy- How close something is to a target or actual value
Precision- How consistent results are regardless of target or actual value