Fill in the Blanks

  1. Fossilized microbial mats consisting of layers of filamentous prokaryotes and trapped sediment are known as -------------------

  2. The development of the enclosed, self-replicating RNA life forms within lipoprotein vesicles may have been the evolutionary path leading to the -------------------

  3. The early energy reactions probably yielded hydrogen, which could have been used to form a across a -------------------

  4. Oxygen did not accumulate in the early atmosphere because the reducing substances reacted with the oxygen to produce -------------------

  5. As oxygen appeared in the atmosphere, some of it accumulated in the form of, which formed a protective barrier to prevent ------------------- from reaching Earth

  6. Two eukaryotic organelles that are possibly the result of endosymbiotic uptake are the and the -------------------

  7. Certain cellular macromolecules can be used as -------------------, which are actual measurements of evolutionary change.

  8. RDP is the standard abbreviation of -------------------
Send comments, errors and suggestions to Associate Professor Bharat Patel: bharat@trishul.sci.gu.edu.au
Created: 9 Oct 2002
Modified: 9 Oct 2002