Bio 110 Week 2 Notes
Bio 110 Week 2 Notes BIOL 110 001
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This 5 page Class Notes was uploaded by Angelina Notetaker on Sunday August 30, 2015. The Class Notes belongs to BIOL 110 001 at University of New Mexico taught by Thomas L. Kennedy in Summer 2015. Since its upload, it has received 55 views. For similar materials see Biology Non-Majors in Biology at University of New Mexico.
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Date Created: 08/30/15
Bio 110 Week 2 Notes The End of Mesozoic Era 655 MYA 0 During this time and age there were birds in the sky sharks in the oceans dinosaurs and even small mammals living but after the end of the Mesozoic Era about 90 of all living things were dead The Cenozoic Era 65 5 MYA Present 0 When the Cenozoic Era began it was the age of the mammals birds and fish The mammals at this time were the dominant species 0 The Earth cooled which was easier for the mammals to live in a cooler climate at the time 0 In this time humans were also evolving Compare and Contrast these terms 0 Facts has nothing to do with opinion but more to do with things that have actually happened and been tested 0 Laws make a prediction about an outcome based on the same circumstance 0 Hypotheses an explanation for observable observation 0 Theories they explain how things work and why they do Chapter 2 The Origins of life on Earth Abiogenesis 21 Life is a process 0 What do these organisms corral shark and passion ower have in common 0 They are all alive use energy use heat and reproduce 0 What is the processes of life 0 Life creates order 0 Metabolism breaks down molecules to create new one we need in our everyday lives 0 How life creates order 0 Human Metabolism is an even bigger break down of everything that happens within your body 0 Life uses energy to create order Life Interacts with its environment 0 It takes in energy from the environment 0 Every living thing has to live with non living things in their environment 0 Autotrophs store energy in sunlight 0 Heterotrophs acquire energy from other organisms Organisms are open systems 0 Energy ows in and ows out Potential Energy food gt Kinetic Energy Heat DNA contains heritable information 0 Life Reproduces O Reproduction I Sometimes it s good to be the strongest I Sometimes size matters not 0 Life Evolves I Life will change over time because of code mutation 22 Conditions of the Early Earth 0 Archean Eon 38 25 Billion Years Ago 0 Archean Atmosphere I The atmosphere was very different back then it is now I Oceans were present 23 Importance of water 0 Water is a good solvent 0 Water is not a universal solvent but it is still a solvent 0 Water proves a median for every chemical reaction we have 0 But not a universal solvent 0 Cells and olive oil have the same formal model 0 Properties of Water 0 Surface Tension Cohesion and adhesions 0 Ability to moderate temperature I It takes a lot of energy to heat up water 0 Insulation of Bodies of Water by Floating Ice 0 If oating Ice were to sink to the bottom of the ocean the whole ocean would freeze up because of the change of climate which would kill all living things or freeze then 0 pH Scale pH Scale Acidic NIELIJIraI Basic H30 m 10 in 110 in 10 squot 10 110 110 110 110quot 10 1m 12 119 It ILamon Juice Soft Drinks Milllk Balklin Soda llilousaholdlammom39ua pH 2224 pH 39 pH 641 1021 mpH sm 19mm HCIHJJM vinegar 7 BIopc Maommm t9 00 PH 2434 pH 74 PM my Stomach Acid Seawater milk of Magnesla le 1030 ng EJ B3 la1H1 05 MC SSM 21m Life on other planes with water 0 Approximately 1948 confirmed exoplanets 0 An additional 7861 candidates Fun Fact XO is a planet that is not in our solar system and now most people look to find water on other planets 0 At least 100 billion plants in the galaxy I 40 billion Earth sized planets in the habitable zone Mars I Surface of Mars would be a good planet to live on but not the best Europa I Which is one of the moons going around Jupiter and we cannot live on the land of this planet but it does have water right under the surface of the planet Enceladus I Geysers on Enceladus Moon of Saturn 0 This planet also has liquid water 24 Life s molecular diversity is based on the properties of carbon 0 The chemistry of life is based on carbon 0 Why is carbon the basis of organic chemistry H H C H 0 What properties make the carbon the basis of all life 0 Important molecules of life The building blocks 0 Lipids I Form fats waxes and oil I Form membranes I Are also steroids 0 Carbohydrates I Are energy I They are the structural support I Structure of DNA Deoxyribonucleic Acid 0 The structure of DNA is made up of four nucleotides I C Cytosine I G Guanine I A Adenine I T Thymine 0 Only adenine and thymine can make a base pair 0 Only guanine and cytosine can make a base pair I The building blocks of life Nucleotides O The Nucleotides of DNA I Adenine and Guanosine are both Purines which is a colorless crystalline compound with basic properties forming uric acid on oxidation I Thymine and Cytosine are both pyrimidines which is a colorless crystalline compound with basic properties I Proteins I The building blocks of life Amino Acids O The gene code is the same for all living things on this planet and the code of live has the same letters and words that create them 0 A large tumor suppressing protein 0 Protein Function 0 Structural O Defensive 0 Communication Abiogenesis Life from non living things I Theories of abiogenesis illustrate how science changes over time 0 Pasteur disproved spontaneous generation 0 Miller Urey experiments and the prebiotic soup theory 0 The RNA Theory 25 The Miler Urey Experiments and the Prebiotic Soup Theory 0 Prebiotic Soup Theory 0 Problems With the PST Life uses energy to create order 0 Miller Urey demonstrated that organic molecules can be made naturally I The Building Blocks of Life are Easy to Make 0 Organic molecules are also made in space 26 The RNA World Theory 0 Steps I RNA forms from inorganic sources I RNA self replicates via ribozymes I RNA catalyes protein synthesis I Membrane formation changes internal chemistry I RNA codes both DNA and protein I DNA becomes master template I Proteins catalyse cellular activities 0 Every cell in the body has DNA genetic information DNA does not make proteins 0 RNA can have genetic information and does have proteins Also RNA can copy itself and create chemical reaction 0 Problems With the RNA World Theory I Primordial Soup With Amino Acids t l RNA World ii DNA World Life as we know it 27 Metabolism First Theory 0 Metabolism began in geological formations 0 Life started on an geological chemical reaction 0 Most proteins run better in high temperatures like 98 degrees 28 The First Cells 0 Cells started simple out of necessity 0 Studying all cells provides insight to LUCA 0 Phylogenetic Tree of Life Bacteria Archaea and Eucaryota All life uses the same DNA The Genetic Code is the same for all life The same 20 amino acids are used by all life Proteins are made essentially the same way in every cell ATP is made essentially the same way in every cell OOOOO End of Week 2 notes 0 Also Week 3 Notes Will hopefully be upload by next Friday or Saturday at the latest Thank you for using Studysoup