Exam 18: The History of Life

The oldest fossils of anatomically modern__________ are 160,000 years old.

All the life-forms found in the Silurian fossil record are still alive today.

All surviving hominins belong to the species

The outer boundaries of Miller and Ureyʹs laboratory-created vesicles are most similar to

Arthropods were able to move onto land because their__________ prevented dehydration and provided support.

The scientists usually given credit for disproving the theory of spontaneous generation of bacteria are

Humans are in the mammal group known as__________ .

Ferns and club mosses had an advantage over earlier plants because they developed

Experiments that attempt to simulate conditions on early Earth have produced results that hint at the possible origins of life. What have the experiments produced?

The largest mass extinction event of all time occurred at the end of the

The first multicellular eukaryotic fossils were

One theory holds that the first self-replicating molecules were

If early Earthʹs atmosphere contained little or no O2, then where did most of the O2 in our modern atmosphere come from?

An anaerobic prokaryote engulfs a prokaryote capable of using oxygen to produce energy. The anaerobe could now perform

To survive successfully on land, plants needed to develop

One advantage that enabled the seed plants to greatly surpass the ferns in colonizing the land was the evolution of

The organisms originally responsible for putting oxygen in Earthʹs atmosphere lived around

Living organisms can spontaneously generate from nonliving matter.

The extinction of the dinosaurs is thought to be due to a massive meteorite impact.

Laboratory research has shown that if a solution containing lipids and proteins is agitated for a long time, then hollow structures called vesicles are produced that resemble__________.