Exam 18: The History of Life

Which of these characteristics separates primates from other mammals?

The first self-replicating molecule was probably__________ .

While exploring a sulfur spring, a scientist finds a new organism. It is single-celled, lacks a cell wall, has a few internal membranes, and appears to have set up a symbiotic relationship with a species of free-living purple sulfur bacteria that are common in the spring. There are no other organisms within it. This new organism would be considered a(n)

Current research indicates that hominins originally evolved in which continent?

Explain why an organism that carries on aerobic metabolism has an advantage over an organism that uses anaerobic metabolism.