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bio lecture one
intro to biology
28
Biology
Undergraduate 1
08/24/2008

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Term
properties of life
Definition
cellular organization, order, sensitivity, (growth, development, and reproduction), energy utilization, evolutionary adaption, homeostasis
Term
2 dominant questions of biology
Definition
how does life work? how did it get that way?
Term
living systems are ....
Definition
hierarchial, meaning each level builds on te level below
Term
hypothesis
Definition
must be tested to determine its validity, is often tested in many different ways, allows for predictions to be made
Term
experiment
Definition
tests the hypothesis, must be carefully designed to tets only one variable at a time
Term
reductionism,
Definition
to break a complex process down to its simpler parts
Term
models
Definition
to stimulate phenomena that are difficult to study directly
Term
deductive reasoning
Definition
uses general principles to make specific predictions
Term
inductive reasoning
Definition
uses specific observations to develop general conclusions
Term
scientific theory
Definition
NOT a hypothesis, a body of interconnected concepts, supported by much experimental evidence and scientific reasoning
Term
two great unifying THEORIES of biology
Definition
cell theory, and theory of evolution
Term
cell theory
Definition
all life is carried out by cells, and all cells come from cells...Theodor Schwann published a book on his theory of cells
Term
the theory of evolution
Definition
species change through time and species diverge, all driven by natural selection
Term
Robert Hooke
Definition
30 x microscope, discovered cork cells
Term
Anton van Leeuwenhoek
Definition
1674 300x microscope, pond water
Term
prokaryotic cells
Definition
do not have a membrane bound nucleus
Term
eukariotic cells
Definition
have a membrane bound nucleus
Term
the theory of evolution
Definition
proposed by Charles Darwin, and Alfred Wallace....
Term
natural selection
Definition
differntial survucal or reproduction of different genotypes in a population leading to changes in the gene frequencies of a population (1. variation in traits 2. differential reproduction 3. heredity 4. end result)
Term
macroscopic evidence for evolution is found in....
Definition
gross anatomy
Term
microscopic evidence for evolution is found in ....
Definition
our macromolecules
Term
linnean taxonomy (order)
Definition
species, genius, family, order, class, phylum, kingdom
Term
who created linnean taxonomy?
Definition
linne corolus
Term
how was early taxonomy flawed
Definition
only had 2 kingdoms, plants and animals
Term
rRNA types
Definition
a, u, c, g
Term
where do humans lie in the course of evolution
Definition
at the end of 5 billion years
Term
isotopes
Definition
elements that vary in number of nuetrons with the same protons and electrons
Term
most common elements in biology
Definition
hydrogen carbon nitrogen oxygen, phosphorous, sulfur, chloride, sodium, potassium, (on slide 7 in blue)
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