Hw Chp15 email
to biovcc@yahoo.com before the quiz on this
chapter

1.       Clay particles may have played an important role in the origin of life because _____. (Concept 26.2) 

2.Experiments in which electricity was discharged into a vessel containing hydrogen gas, water vapor, methane, and ammonia were conducted by _______

. Their results support Oparin's theory on the origin of life. (Concept 26.2) 

3. The atmosphere of early Earth probably contained no O2 until the emergence of organisms that _____. (Concept 26.3) 

4. Eukaryotic cells probably arose through _____. (Concept 26.4) 

5. Until about 500 million years ago, all living things lived where? _____. (Concept 26.5)