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BIOL 1103 Week 1 Notes- Dr. Blaustein

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by: Emily Morrison

BIOL 1103 Week 1 Notes- Dr. Blaustein Biol 1103k

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Emily Morrison

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Dr. Blaustein's BIOL 1103 Week 1!
Introductory biology I
David blaustein
Class Notes
Biology, georgia state university, Biology 1, BIOL 1103, Dr. Blaustein, notes, GSU




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This 5 page Class Notes was uploaded by Emily Morrison on Wednesday January 13, 2016. The Class Notes belongs to Biol 1103k at a university taught by David blaustein in Spring 2016. Since its upload, it has received 33 views.


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Date Created: 01/13/16
Understanding Life, Science and Society 01/13/2016 ▯ What is life? ▯ 1. Complex, organized structures  begins with cells, everything is built with cells  atoms, building blocks, to molecules, ▯ 2. homeostatis- active maintenance of complex structures.  ▯ 3. growth… to grow you need… ▯ 4. need nutrients and energy acquisition.  Metabolism, metabolic processes, how cells take in nutrients and get their energy ▯ 5. Must be well adapted to… ▯ 6. Reproduce! So you can…. ▯ 7. Evolution, passing on your genetic material ▯ ▯ Different ways to classify life ▯ 5 Kindgoms based on cell type, cell number, nutrient acquisition. ▯ ▯ Kingdom Monera- Most simple, oldest Fossil, simplest cell type, prokaryotes ▯ Prokaryotic to Eukaryotic (more complex) ▯ Multicellular have different ways of aquiring glucose ▯ ▯ Scientific Principle/Approach 1. Natural Causality: as scientists, natural phenomena, have natural causes. If its lighting outside, its not Zeus. ▯ 2. Uniformatarianism: uniformity time and space. How we apply it. Natural phenomena and natural causes are same that happened in past and same as will happen in the future. If something works today, it did in past and will in future. Ex: Gravity. Same here as it is in Russia. Gravity worked a billion years ago and will work in a billion years 3. Common perception: where u do not want 1 or a small group of people dictating truth. Its not a philosophy. We should all get same results in experiments. What u do should work if I do it too. there’s no special magic. Whole scientific community is gonna test it to see if they get the same results. We all have same, sight, smell, hearing, etc. Once we understand science… Scientific Method- 1. Observation- collect and organize information. u see something interesting that u wanna explain  Antibiotics. It was a mistake discovering it. His cultures were contaminated with fungus. There was a little Zone on fungus where bacteria couldn’t grow. He had to take his idea and test it ▯ 2. Hypothesis- whether its right of wrong. It’s a guess. A possibly answer. Explanations must be testable. ▯ 3. Experimentation- tells you whether your hypothesis is right or wrong.  Control (tank with infected fish that don’t get the medicine) vs. experimental/treatment variable (flowers with powder. Fish infected with bacteria that get the medicine)  Replicate- do it many times. U have to take chance into consideration. Replicate experiments, doing it over and over  Flowers with powder and without powder just water. ▯ 4. Reevaluation- sometimes have to go back to drawing board if you’re wrong ▯ 5. Conclusion ------ theory? –powerful hypothesis over and over again, it becomes the theory! Ecology: interrelationships between organisms and their environment 1. organism—environment a. make it through this, temperature, etc. 2. organism—organism, living a. u don’t live long enough to be involved with organisms if ur not adapted to environment b. interacting with other organisms i. intraspecific- own species ii. interspecific- different species Population- biotic. Same species. all members of a particular species which interbred (can reproduce viable young)  members of same species  humans and humans, boy and girl  buck and doe  dog and dog Community. Biotic. Different species. different interrelated populations sharing same habitat. Interacting with different species. Human eating eggs. Even plants. Ecosystems. Biotic (living, the population, organisms, communication) and abiotic (environmental factors, rivers, oceans, etc) components of a habitat. Population AND community = ecosytem. Biosphere- all ecosystems on planet ABIOTIC FACTORS: ENVIRONMENT. Not living interaction!! ▯ 1. Sunlight- we need plants, to do photosynthesis, glucose ▯ 2. Temperature- organisms are adapted to a certain range of temp. we are what our proteins are. If they lose their 3d shape, they stop functioning then we stop functioning. ▯ 3. water and salts- marine vs. fresh H20. We are made of water. Our cells have never left water. We don’t breathe in amniotic fluid in our mothers during pregnancy. What’s in the water, the salt in water, etc. ▯ 4. oxygen- aerobes vs. anaerobes  aerobes-  anaerobes- ▯ 5. metabolic wastes- H2S2 methane ▯ 6. nutrients 7. pH- measure of acidity and alkility. Has an effect on proteins Autrophs- Monosaccharides (producers) Plants self-feeding. Producers. Photosynthesis. Glucose and carbohydrates -chemical bond= energy -chlorophyll and acc. Pigments. (colors) Heterotrophs—E from autotrophs. We are consumers!!! Eating the organism that makes the glucose. -sugars and starch vs. cellulose Strategies for getting glucose: 1. Primary heterotroph- first level. Herbivore. Only eats plants, gets the glucose. Ex: cow eating grass.  leaf vs. seeds and fruit ▯ 2. secondary- first level carnivore. Eats the cow. ▯ 3. tertiary- carnivore. Eats the cow. ▯ 4. Omnivores- eat both!! That’s us  5. decomposers (saprophytes) – decompose materials that are dead but still get energy from bonds ▯ 6. detritus feeders- waste material ▯ ▯ u can get feeding relationships ▯ ▯ terrestrial- plant!! ▯ water- aquatic ▯ ▯ Food chains- levels!! Linear relation ▯ Food webs – taking away one organism can ruin it all, all combo of food chains in ecosystems! ▯ ▯ Energy flow  Trophic levels- levels of energy storage.  Autotrophs (plants)- stores energy of sun  Primary consumers. Herbivores.  Carnivores.  Can any ecosystem have a limitless # of trophic levels? NO!!! BECAUSE METABOLISM/GLUCOSE IS INEFFICIENT  Rule of ten- maximum amount of energy that is transferred is 10% so 90% is lost to heat of metabolism. Heat given off by organisms is wasted.  Ecological pyramids-  first trophic level it takes more 100 calories.  2 nd trophic level 10 calories.  3 trophic level 1 calorie o Pyramids of numbers o Biomass o Energy ▯ ▯ Bioaccumulation or biological magnification  DDT- an insecticide. Potent. Fat soluble!!  2 kinds of molecules on planet  water soluble- much safer. Organism and environment can get broken down.  fat soluble- tough to break down. ▯ Bioaccumulation. rule of 10. less with more? ▯ ▯ Nutrient cycling- energy is wasted. But nutrients are cycled because theres a finite amount of it!!! Every nutrient on planet has a cycle. Bio-geo- chemical cycle. ▯ ▯ Biogeochemical Cycle ▯ Between living, nonliving, chemical interactions  For all nutrients and building blocks  Hydrological cycle. The water cycle o Precipitation from clouds. Run off to lakes,rivers,oceans, evaporates back into clouds. ▯


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