O Lecture 10/18/10
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O Lecture 10/18/10
What are four characteristics of life?
1. Capture, store, and transmit energy
2. Capable of reproduction
3. adapt to their environment
4. Changes through time
definition of ecology
the study of the interrelationships between the physical and biological aspects of the environment
pysical aspec6ts of the enviornment
biological aspects of the environment
How many species live in the ocean?
textbook - 250,000
but more like 750,000 to 1 million
Who developed the taxonomic classification used in Zoology?
What is the device to remember the catagories in Linnaeus' classification?
King Phillip Came Over From Gorgous Spain
What are the categories in Linnaeus' classification
definition of species
interbreed or the potential to interbreed
What are the five major kingdoms
monara - Bacteria
Protista or Protoctista - single or multicelled
Fungi - not as many in the ocean
Plantae - Plants
Animalia - Animals
Definition of a prokaryote
group of organisms that lack a cell nucleus or any other membrane-bound organelles
Definition of Eukaryote
Organisms whose cells are organized into complex structures enclosed within membrane
Who broke the phylogenetic tree of life into three parts?
What are the 3 branchs on Carl Woese's tree
How is the phylogenetic tree of life divided?
based on the difference in 16s rRNA genes
2 reasons that Archaea was split from the bacteria
1. life cannot be classified by the 2 domain system
2. some bacteria are so different genetically from other bacteria as they are from humans
Definition of bacteria
usually unicellular organisms
When did bacteria start appearing?
Are bacteria prokaryotes or ekarotes?
What are the 3 shapes of bacteria
Definition of Archaea
most are anaerobes
Definition of anaerobes
incapable of living in air
When did archaea start appearing
How do Archae and differ from Bacteria
form and structure of ribosomes
outside of cell
type and linkage of their lipids
When do Eukaryotes appear?
What are the two major marine provinces
definition of the benthic
definition of the pelagic
Define areas in the ocean by depth
surface - 200m
Define areas of the ocean by light
light sufficient for photosynthesis ~100m
illumination is too weak for photosynthesis
no light from surface because it is all abosrbed by the water above