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O Lecture 10/18/10
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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
abotic
biological aspects of the environment
biotic
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?
Linnaeus 1735
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
Kingdom
Phylum
Class
Order
Family
Genus
Species
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?
Carl Woese
What are the 3 branchs on Carl Woese's tree
Bacteria
Archaea
Eukaryotes
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?
3bya
Are bacteria prokaryotes or ekarotes?
prokaryotes
What are the 3 shapes of bacteria
spirilla
bacilli
cocci
Definition of Archaea
most are anaerobes
Definition of anaerobes
incapable of living in air
When did archaea start appearing
3.5 bya
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?
1.6-2.1 bya
What are the two major marine provinces
the benthic
the pelagic
definition of the benthic
bottom
definition of the pelagic
water column
Define areas in the ocean by depth
Epipelagic
Mesopelagic
Bathypelagic
Abyssopelagic
Epipelagic
surface - 200m
Mesopelagic
200-1000m
Bathypelagic
1000-4000m
Abyssopelagic
below 4000m
Define areas of the ocean by light
Photic zone
Dysphotic Zone
Aphotic
Photic Zone
light sufficient for photosynthesis ~100m
Dysphotic zone
illumination is too weak for photosynthesis
Aphotic
no light from surface because it is all abosrbed by the water above
Author
green29dive5
ID
47036
Card Set
O Lecture 10/18/10
Description
Marine Ecology
Updated
2010-11-03T15:58:02Z
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