Cambrian - Study guides, Class notes & Summaries

Era (youngest to oldest)Cenozoic, Mesozoic, Paleozoic, Proterozoic, Archean, Hadean Period (youngest to oldest)Quaternary, Neogene, Paleogene, Cretaceous, Jurassic, Triassic, Permian, Carboniferous, Devonian, Silurian, Ordovician, Cambrian, Ediacaran Epoch (youngest to oldest)Holocene, Pleistocene, Pliocene, Miocene, Oligocene, Eocene, Paleocene Principle of Superpositionolder rocks will be on the bottom while younger rocks will be on the top, can be used to get a rough estimate of time...

What is the goal of bioremediation? - To clean up areas polluted with toxic compounds using bacteria Broad-spectrum antibiotics inhibit the growth of most intestinal bacteria. Consequently, assuming that nothing is done to counter the reduction of intestinal bacteria, a hospital patient who is receiving broadspectrum antibiotics is most likely to become - deficient in certain vitamins and nutrients If prokaryotes did not exist, what would change in the nitrogen cycle? - The rate of movement ...

What are stromatolites? - rocks formed by the accumulation of sedimentary layers on bacterial mats What are stromatolites? - rocks formed by the accumulation of sedimentary layers on bacterial mats When was the oxygen revolution? - 2.7-2.3 bya Oldest Eukaryotes - 1.8 billion years ago Oldest fossil of a multicellular eukaryote - 1.6 billion years ago What is a protist? - polyphyletic group of unicellular eukaryotes when was the earliest direct evidence of life, and where was it...

Scientific theories are just "ideas" (T/F) Answer> false What is NOT considered a quality within the definition of life? Living things evolve Living things can grow and develop Living things are sentient Living things use energy Answer> Living things are sentient In some cases an observational study is more appropriate than an experiment. (T/F) Answer> True The oldest fossils humans have discovered are from organisms called________. Answer> stromatolites Extant mea...

1. Explain what the “Cambrian explosion” represents, when it occurred, and how it is an example of an adaptive radiation. Represents: gradual event, with animals increasing significantly in size and diversity over about 60 million years When: 542 MYA Example of adaptive radiation: viewed as adaptive radiation of animal groups that may have evolved earlier 2. Explain how fossils form and the limitations of the fossil record; describe the two main types of fossils. Process of fossiliz...

BIOCHEM 32A Exam 1 MC 50 Questions and Answers Updated 2024/2025 Solved 100%; University of Notre Dame 1. Georges Cuvier proposed , which directly opposed the idea that Earth’s geological features can be explained by constant, steady mechanisms. A. Gradualism B. Catastrophism C. Uniformitarianism D. Adaptationism Consider the following statement for Questions 2 through 4: In Mendelian genetics, complete dominance is a heterozygous condition where the dominant allele masks any ef...

BIOCHEM 32A Exam 2 MC 50 Questions and Answers Updated 2024/2025 Solved 100%; University of Notre Dame 1. Georges Cuvier proposed , which directly opposed the idea that Earth’s geological features can be explained by constant, steady mechanisms. A. Gradualism B. Catastrophism C. Uniformitarianism D. Adaptationism Consider the following statement for Questions 2 through 4: In Mendelian genetics, complete dominance is a heterozygous condition where the dominant allele masks any ...

ABEKA BIOLOGY: GOD'S LIVING CREATION TEST 9 (NINE WEEKS EXAM) ALREADY PASSED large geographic region identified by its climax vegetation and distinctive animal life biome sudden outburst of living things of great variety in the fossil record, showing no evidence of evolution Cambrian explosion what is NOT one of the three main groups into which mammals are divided based on how they reproduce pholidotans the principle that animals or plants well suited to their environment are ...

Recognize dragonflies as formidable aerial and aquatic predators - correct answer Dragonflies live in water for the first two years of their life. After this adult dragonflies hunt other flying insects while they are flying themselves; they cannot feed while walking or sitting. Identify dragonflies as ancient insects (when, what, why) - correct answer Carboniferious, meganura, first insects to fly, selection pressures Develop more than one hypothesis for why dragonflies were so big - corre...

adaptions - inherited aspects of an individual that allow it to outcompete other members of a population that lack the trait (or that have a slightly different version of the trait). Adaptions are traits that have evolved through the mechanism of natural selection analogous traits - similar because they have converged on shared form. they are not derived from common ancestor apamorphy - • a form of a derived state Australopithecines - members of the hominin genus Australopithecus biolog...