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What is Biology
Science that studies living things.
Name 6 major living organisms.
Animals, Plantae, Protists, Fungi, Archaea, and Bacteria
Science is:
a systematic process of arriving at a solution to an unknown or understanding an event in nature that involves observations, experiments, and interpretations of data.
Scientific Method
1) observation 2) question 3) hypothesis 4) experimentation 5) conclusions
Statistical Analysis
Collection, analysis, and interpretation of data
Significance Level
Any difference between data is called p value. p0.05 insufficient evidence
Ho
Null hypothesis, no differences. Want to reject null hypothesis
True or False: Correlation does imply causation.
False. Does not prove causation
Closer to _ the closer its significance
1 or -1
Scientific Theory
A fundamental concept that is widely accepted due to the fact that it has been repeatedly tested and has not been falsified.. Example: Theory of Evolution
Scientific Law
A theory that has remained unchanged for a significant amount of time. Example: Law of Gravity
5 Characteristics of Living Things
1) Metabolic Process 2) Generative Process 3) Responsive Process 4) Control Process 5) Structural Organization
Metabolism
Total of all chemical reactions and associated energy changes that take place within an organism. Energy needed for movement, growth, chemical reactions, reproduction.
Generative Process
Organisms increase in size. Number of individuals increase in population by reproducing.
Responsive Process
Ability to respond to stimuli.
Control Process
Coordination and regulation. Homeostasis: mechanisms that ensure that all metabolic activities maintain stable internal conditions in the proper sequence (coordination) and proper rate (regulation)
Structural Organization
All living things are composed on one or more cells and thus share some basic structural similarity. Non-Living materials do not share such structural similarities. Cell=fundamental unit of life
Biological Levels of Organisms
Atoms–> Molecule–>cell–>tissue–>organ–> body systems –>organism–>population–> community–>ecosystem–>biosphere
Jean-Baptise Lamarck
Wrote Philosophie Zoologique 1809. Proposed inheritance of acquired characteristics (thought that genotype changed and could pass on to offspring)
Example of Inheritance of Acquired Characteristics
Short necked giraffe–>keeps stretching their neck through their lifetime–> produces offspring–> offspring has a longer neck. Genotype DOES NOT change
Erasmus Darwin
Laws of Organic Life. Charles Darwin’s grandfather
J.D Hooker
Close friend, knew about Darwin’s theory. Botanist. Helped publish a joint paper for Wallace and Darwin.
Thomas Malthus
Wrote Essay on the Principles of Population Discussed favorable variations would tend to be preserved and unfavorable ones to be destroyed. Results formation of new species
Charles Lyell
geologist and lawyer. Put forth uniformitarianism. Helped publish a joint paper for Wallace and Darwin.