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Lecture

BIO1130 Keywords for Lecture 2

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Department
Biology
Course Code
BIO1130
Professor
All

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Biology Keywords 2AnalogyStructural or behavioural similarities in terms of functions shared by unrelated species or organisms but do not share a common ancestrydevelopmental origin analogousBicarbonate This is the most available carbon source where it exists as ions in the ocean interface between carbon dioxide and water in the ocean creates bicarbonate There is a constant rain of insoluble carbonate salts that are falling to the bottom of the ocean this is how sedimentary rocks form fossils traps living organisms As water levels in the oceans rise the bicarbonate levels rise as well When life developed a pathways that allowed them to absorb calcium from the oceans and allowed them to put it in the matrixes of shells and bones more complex organisms started to developBiogeography Founded by LeClerc the study of the geographic distributions of plants and animals Continuous distribution when many species live in suitable habitats throughout large areas Disjunct distributions when species live in widely separated locations Caused by dispersal movement of organisms away from origin and vicariance fragmentation of a continuous geographic distribution by external factors Evidence of common ancestryCarbon cycle Carbon provides the backbone of most biological molecules and carbon compoundsstore the energy captured by photosynthesis CO carbohydrates 2 Carbon is built into a glucose ring by photosynthesis Every other organism uses this glucose ring breaks it down and makes it into ATP A common atmospheric pool of CO creates a global carbon cycle It is the global 2circulation of carbon atoms especially via the processes of photosynthesis and respiration We think that most of the carbon is in the atmosphere but in reality most of it is dissolved in the oceans Were trying to get carbon back into a form that we can release into the atmosphere At a time where there was so much plant material that wasnt broken down it made coal Rock cycle is part of this To be able to make sediments takes millions of years It is extremely longterm concept of LyellCarbonate The biggest sink of carbon is the carbonate in the ocean since most of it is dissolved there Because theres COin the air and we have carbonate every single carbonation of 2 carbonate with a positively charged molecule is insolubleCarbonate salts Formed by a bicarbonate bonding with a mineral Insoluble falls to the ocean floor sediments and forms sedimentary rocks where fossils can be foundCatastrophicFormed by Georges Cuvier from the reasoning that each layer of fossils represented theorythe remains of organisms that had died in a local catastrophe and another different species recolonized the area When another catastrophe struck they formed a different set of fossils The theory that Earth has been affected by sudden violent events that was sometimes worldwide in scope Some people believed that some extinct animals still existed somewhere on the planet but Cuvier said nothere have been giant catastrophes that have killed off major groups of organism which can be seen in the fossils causing these animals to disappear from the planet Fast rapid changesCell theory Created by Schwann and Schleiden Schwann worked on animal cells while Schleiden plant cells and found the same results Three generalizations yielded by microscopic observations 1
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