SC MSCI 102 - Exam 1 Study Guide (6 pages)

Previewing pages 1, 2 of 6 page document View the full content.
View Full Document

Exam 1 Study Guide



Previewing pages 1, 2 of actual document.

View the full content.
View Full Document
View Full Document

Exam 1 Study Guide

37 views


Pages:
6
School:
University Of South Carolina-Columbia
Course:
Msci 102 - The Living Ocean

Unformatted text preview:

Ocean water source o Earth s interior o Extraterrestrial comet ice Ocean salinity o Evaporation increases salinity o 35 g L Land surface area in N hemisphere is twice that in S hemisphere o N 60 ocean 40 land o S 80 ocean 20 land Life on Earth o Early atmosphere no O N CO2 H2O with traces of methane and ammonia o O entered about 2 5 billion years ago Geological evidence of O formation life 2 7 billion years ago o Banded Iron Formation in Australia Formed because of oxidation iron rust Likely formed in shallow seas on continental shelves because too old to survive subduction Sedimentary formation Evidence of early life o Fossils of bacteria like organisms o Discovery of molecular fossils of cyanobacteria blue green algae in 2 1 billion year old rock Stromatolites modern ancient Shark Bay Australia South Africa o Layered microbial mat communities that grow in shallow seas and accrete sediments o Filamentous cyanobacteria are important to the component of the mat o Ancient Fine layers depict the layers of the microbial may and sediment that accumulate as it grows towards the surface Filamentous cyanobacteria produce molecular oxygen through the process of oxygenic photosynthesis Did life begin at hydrothermal vents o Protection from UV radiation o Liquid water o Source of reduced chemicals for energy o Mineral surfaces suitable for assembly of the biochemicals of life Scientific Method o Curiosity observations measurements hypothesis experiments theory law o Hypotheses can be independently tested and theories can evolve as new information is obtained The elements of life o Four elements make most biomass major components C O H N o 9 macronutrients Na Mg P S Cl K Ca I Si o Micronutrients Fe Cu Zn Mn Fe is a limiting nutrient in the ocean Photosynthesis o Organisms are the base of most food webs o All organisms need a source of energy and carbon for growth o Photoautotrophs use light energy and inorganic carbon CO2 for growth o Chemoheterotrophs use chemical energy and



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Exam 1 Study Guide and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Exam 1 Study Guide and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?