Bio105 Study guides, Class notes & Summaries

Who performed classic experiments that supported the semiconservative model of DNA replication? - Meselson and Stahl What separates the DNA strands during replication? - helicase A new DNA strand elongates only in the 5' to 3' direction because - DNA polymerase can only add nucleotides to the free 3' end. What is the role of DNA ligase in the elongation of the lagging strand during DNA replication? - It joins Okazaki fragments together

Which of the following is a defining characteristic of animals but not plants? - heterotrophic Being a heterotoph means - obtaining your food by eating other organisms what happened during the Cambrian explosion? - there was a rapid diversification of animal forms Most animals fall into one of how many phyla? - 9 How many of the animal phyla include single-celled animals? - 0 Which of the following best describes cnidarians? - They have radial body symmetry, tissues, and stinging cells F...

What is the function of DNA polymerase III? - to add nucleotides to the end of a growing DNA strand What is the function of topoisomerase? - relieving strain in the DNA ahead of the replication fork Which of the following covalently connects segments of DNA? primase DNA polymerase III DNA polymerase I ligase

Which of the following phyla is the most diverse and numerous? - arthropods Which phylum is most closely related to the arthropods? - roundworms Most chordates are - vertebrates the echinoderms are most closely related to the - chardates all vertebrates have - a skull and backbone

Darwin published On the Origin of Species by Means of Natural Selection (1859) Origin of Species challenged a cen- turies-old worldview Can we test whether Earth is ~6000 years old? Doctrine of Signatures fossils - Darwin made two points: -- today's organisms descended from an- cestral species -- natural selection was mechanism for evolutionary change in pops - 1700's dominant philosophy was natur-al theology: - proposed that adaptations of organ-isms were evidence that Creato...

Summarized notes from PowerPoint

Summarized notes from PowerPoint

This is a comprehensive and detailed note for Bio 105 with focus on; Cell respiration . U'll need it!! N.B; If this doc helped you to ace you test or exam, please feel free to drop a review. it means a lot. Thank you

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