n Welcome to Biology 100

n    Take out a blank sheet of paper:

n    On the sheet of paper

 

 

n    Fill out your first and last name (please print)

n    Email used: runner or other (please print)

n    Answer the following question:

n   What courses in Biology, Chemistry, or other science have you taken (please include any high school science classes)?

n   How choose one that idicates how many college courses you have taken have required the use of computers

 

§    1= in every class   2=only 2-3 classes   3= 3-4 classes
§    4= never this will be the first class

 

 

Why do I have to take Bio 100 ?

Biology Content Curriculum Requirement

n     Biology is increasingly synthetic in its knowledge and draws on other disciplines

n     Modern molecular biology and biochemistry impact medicine, agriculture

n     Biology is critical for understanding human health & society

n    Genetically engineered crops can help increase harvest yields, yet are viewed with mistrust by many

n    Forensic science benefits from DNA technology (identifying criminals, freeing wrongfully accused)

n    Human Genome Project has great potential to help fight and eliminate many diseases, but is only a first step

n    Embryonic stem cell technologies offer potential to repair damaged tissues and organs – present ethical concerns

n    Animal cloning presents methods for hormone production, drug delivery, and protection of endangered species

 

Research Science

 

n   http://www.csub.edu/~ddodenhoff/Bio100.html


What is Science?

The observation,

identification,

description,

experimental investigation [scientific method],

and theoretical explanation

of natural phenomena.

Scientific Community

n   How do scientists exchange ideas?

n   Publish the results of experiments in peer review journals.

n   How is scientific research organized or directed?

n   Funding goals from granting organizations

§   NSF (National Science Foundation)
§   NIH  (National Institute for Health)

NSF – Funding Goals

 

Deductive Reasoning

n   Concluding a reason/or cause for a natural phenomenon based upon a general principle

Inductive Reasoning

n   Using a observations of natural phenomena to formulate a general principle

Scientific Method

 

 

 

 

 

What are Science Laws and Theories?

n   A theory attempts to explain why nature behaves as it does. Theories are sometimes called "models" for this reason.

 

 

n   A law describes how nature behaves without explaining why nature behaves that way.

Scientific Laws

Scientific Theory

n   The Cell Theory

 

Biology

n    The study of living organisms (Study of life)

 

§  What is life?

 

n    

n   Composed of cell(s)

n     isolated from external

n      environment by a

n      membrane

 

 

 

 

 

 

Biology Themes

n   Evolution -   a change in the frequency of alleles (character traits) between generations.

§     Mechanisms – gene flow, genetic drift, natural                                    selection, mutation.

 

 

n   Ecologists, Physiologists, Paleontology, Behavioral ecologists, Microbiologists, etc…

Biology Themes

n   Flow of Energy

 

§     Ecosystems

§     Interactions between species

 

n   Ecologists and Physiologists

Biology Themes

n   Cooperation

 

§     Formation of social systems

§     Interspecies relationships

 

Behaviorists, Behavioral ecologists

Biology Themes

n   Structure determines function

 

§     Organisms are limited or can survive in new environments given their genetic expression of traits.

 

n   Physiologists, Comparative anatomists, Evolutionary biologist.

Homeostasis

n   The maintenance of a stable internal environment.

n   Excreting waste products

n   Acquiring food

n   Maintaining body functions

 

          Physiologists, ecologists

Biological Organization Arises from Molecular Organization

n      Living organisms display a natural hierarchy of organization and emergent properties that are more than the simple  sum of their parts

n      Atoms lead to

n      Molecules, which lead to

n      Organelles, which are arranged within

n      Cells, which make up

n      Tissues, which make

n      Organs, which form

n      Organ systems, which together make an

n      Organism, which is part of a

n      Population within a

n      Community in an

n      Ecosystem, the largest of which is the

n      Biosphere (=Earth)