MASTERING BIO CH25 – Flashcards

Reptiles first appeared during the _____ era. Paleozoic Triassic Mesozoic Cenozoic Jurassic

We are living during the _____era. Neogene Cenozoic Paleozoic Paleogene Mesozoic

Dinosaurs went extinct during the _____. Devonian Precambrian Mesozoic Cenozoic Carboniferous

_____ were the dominant vertebrate life form during the Paleozoic era. Amphibians Reptiles Sponges Dinosaurs Mammals

Life arose during the _____. Precambrian Cenozoic Triassic Paleozoic Mesozoic

Flowering plants first appeared during the _____. Devonian Precambrian Mesozoic Cenozoic Carboniferous

The Mesozoic era began approximately _____ million years ago. 4,600 570 251 65 25

The Precambrian time began at least _____ million years ago. 4,600 570 245 65 25

Seed plants first appeared during the _____. Paleozoic Triassic Mesozoic Cenozoic Jurassic

The first prokaryotic cells appeared during the _____. Jurassic Cretaceous Paleozoic Triassic Precambrian

Animals first appeared during the _____. Mesozoic Paleozoic Precambrian Silurian Cenozoic

The Cenozoic era began approximately _____ million years ago. 4,600 570 245 65 25

Most modern animal phyla evolved during the _____ era. Paleozoic Permian Cenozoic Mesozoic Precambrian

_____ were the dominant vertebrate life form during the Mesozoic era. Dinosaurs Mammals Fish Birds Amphibians

Most modern animal phyla evolved during the _____ era. Paleozoic Permian Cenozoic Mesozoic Precambrian

Bony fish first evolved during the _____ . Mesozoic Paleozoic Cenozoic Precambrian Cretaceous

1) The first genetic material was most likely a(n) A) DNA polymer. B) DNA oligonucleotide. C) RNA polymer. D) protein. E) protein enzyme.

Once some protocells contained self-replicating molecules, ______ could have begun to shape their properties as those that reproduced more efficiently would have increased in number