Chapter 25: Part one

Question 1

1st Abiotic synthesis of small organic molecules

Answer 1

Abiotic means physical rather than biological; not derived from living organisms

Question 2

3rd Packaging of molecules into protocells

Answer 2

Protocell is a vesicle containing RNA capable of replication

Question 3

Protocells

Answer 3

may have formed from fluid-filled vesicles with a membrane-like structure

Question 4

In water, lipids and other organic molecules can

Answer 4

spontaneously form vesicles with a lipid bilayer

Question 5

ribozymes

Answer 5

RNA molecules
-catalyze many different
reactions

Question 6

radiometric dating

Answer 6

The absolute ages of fossils can be determined by

Question 7

Each isotope has a known

Answer 7

half-life, the time required for half the parent isotope to decay

Question 8

Radiocarbon Dating

Answer 8

can be used to date fossils up to 75,000 years old

Question 9

geologic record

Answer 9

divided into Hadean, Archaean, Proterozoic, and Phanerozoic eons