Exam 18: The History of Life

The first animals to move onto land were__________ .

The exoskeleton of early marine arthropods can be considered a ʺpre-adaptationʺ for life on land because it

Current theories hold that hominin species migrated out of Africa

The oxygen that arose in early Earthʹs atmosphere was likely produced by organisms that were very similar to modern

The human species first appeared in the

__________may have evolved from aerobic bacteria that were engulfed by predatory prokaryotic cells.

Organisms that have complex internal membranes are prokaryotic.

By examining fossil evidence, paleontologists believe that mammals evolved from ancestors of modern

Early land plants required adaptations that

The first hominin species associated with the use of tools was

The experiments that demonstrated that meat does not spontaneously generate maggots were conducted by

Which era saw the rise of seeds and pollen in plants?

Birds and mammals have a more active lifestyle than reptiles due to

The earliest fossil organisms resemble modern

Miller and Ureyʹs experiments attempting to re-create the prebiotic environment produced a rich mixture of complex organic chemicals from simple chemicals.

Describe how the mitochondrion evolved as an organelle, using the endosymbiont hypothesis.

RNA can act like an enzyme.

The theory that life began in the distant past from nonliving molecules that became able to reproduce themselves is called

Who disproved the ʺbroth-to-microorganismsʺ hypothesis?

Miller and Ureyʹs experiments attempting to re-create the prebiotic environment produced prokaryotic cells.