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Biology Week 1: Characteristics of Life, What is Science: 1/25, 1/27, 1/29

by: Regan McGillick

Biology Week 1: Characteristics of Life, What is Science: 1/25, 1/27, 1/29 BIO 151-001

Marketplace > University of Wisconsin - Eau Claire > Biology > BIO 151-001 > Biology Week 1 Characteristics of Life What is Science 1 25 1 27 1 29
Regan McGillick

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About this Document

This set of notes cover the lecture topics and class discussions of the first week of this spring semester.
Biology of Humans
Kelly L. Murray/ Kelly Jo Wright
Class Notes
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This 4 page Class Notes was uploaded by Regan McGillick on Saturday January 16, 2016. The Class Notes belongs to BIO 151-001 at University of Wisconsin - Eau Claire taught by Kelly L. Murray/ Kelly Jo Wright in Spring 2016. Since its upload, it has received 78 views. For similar materials see Biology of Humans in Biology at University of Wisconsin - Eau Claire.


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Date Created: 01/16/16
Week 1 (1/25,1/27,1/29) --What is Life? — Its all about knowing… -What are the characterizations of life and what is not? -What is considered science and what is not science? -And how do you find, discover, and know more about naturalism? Class Topics: (topics to be covered in class lectures/labs this semester) 1. History/life/diversity 2. Chronic disease in humans 3. Infection 4. Reproduction/genetics 5. Ecology/sustainability -What are the characterizations of life? (1)Molecular Composition: (a)Every living organism contains these organic compounds ( Carbon, Nitrogen, Oxygen, Hydrogen ) i. Carbon (in humans) = 18% ii. Nitrogen (in humans) = 3% -Amino Acids = protein -Nucleic acids = DNA iii. Oxygen = 65% iv. Hydrogen = 10% (b)Molecular composition of cells- is cells composed of water, inorganic, and organic ions (C, N, O, H) (c)The human body holds 2 atoms of the same elements and even many compounds of molecules. (d)IMPORTANT MOLECULE GROUPS: (Amino Acids, Carbohydrates, Lipids/fats, Nucleic acids) Consider this: The chemical composition of a CELL: -nucleic acids = 1% -carbohydrates = 1 % --it is basically a cells (humans) energy source -minerals = 4% -lipids = 10% -water = 70 % -proteins = 15% (2)Metabolism: (a)This process of how our bodies use raw materials, food, as energy through chemical transformation. (i) (A. T. P) (Adenosine Triphosphate) = a molecules energy efficiency (b)4 Uses (i) Synthesis: raw materials to make energy and products for the body (ii)Helps maintain a living condition of homeostasis. (iii) Used in respiration; that be respiration of cellular, chemical reactions. (iv) It provides growth in size or repairing body damage (3)Cellular Composition: (a)Cells are the smallest living thing and with many many many cells make up all living things. ITS INCREDIBLE! (b)There are different types of cells (red blood cells, neuro cells) (c)Cells come from other cells Keep this in mind: Levels of Organization(pg 10 Human Biology Concepts and Current Issues; Johnson) 1. Atom and Molecule 2. Cell 3. Tissue 4. Organ 5. Organ System 6. Organism 7. Population 8. Community 9. Ecosystem 10. Biosphere (4)Homeostasis: (a)It is a way of the body, or organism maintaining an equal balance – a range of conditions. (i) Example: there is the normal body temperature, and then there is having a fever. a. This idea of the body keeping a sense of “NORMAL ” (b)Many outside forces of the environment cause our body’s “normal” variables to be affected So much balance can have antagonistic o s Home statsi affects…. (5)Responsiveness: (a)Basically it’s the actions of choosing to respond to things, events, danger.. (i) A relationship between an organism’s nervous system and motility (6)Growth and Reproduction: (a) Every living things (plant, animal, human) we all go through a development of growth and production. (i) Passing through different stages of life (b)Every organisms has the abilities to reproduce off spring Infa Adul T een nt t (7)E**remember, for the sake of this class, Professor Murray has states that this topic will be viewed through scientific lenses, only looking at given theories and hypothesizes; not using non-science (aput: a “unifying concept that there is always change”; change is the only consistency. (b) To Occur: (i) heritable (ii)genetic variation (i1. creates diversityn (c)Scientists look at the material evidence of fossils, bio geographical patterns in species, selective breeding --What is Science? –  The text book presents the idea of “science” as two words: 1) Knowledge and 2) a Process Science vs Non-science: - Science has to be testable, have evidence that supports or disproves something, - Non-Science is your beliefs, faith,m” (can be measured, seen, touched, smelt) o Ex: you could provide all the evidence to prove to a friend that ghosts are real, but no amount of evidence will change that person’s belief that ghost are no real. --How to Find Out? – Scientific Method: 1)Make Observations ---- 2) Make a Hypothesis---- 3) Design a testable experiment ---- 4)Preform Experiment and make observations or variables ---- 5) Collect data ---- preform again.a, (graphs) ---- 7) Conclusion ---- 8) Make revisions to experiment and **need a controlled experiment – control variables - Independent variable: “the variable that is manipulated” - Dependent variable: “Outcome variable; what you are measuring” - Control: “maintaining a consistency”; “keep variables all the same and not affected by outside forces .


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