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Introduction (Chapter 1)

by: Madeline LeFrock

Introduction (Chapter 1) BISC205010

Madeline LeFrock
Biology for Health Sciences
Sikes,Robert Allen

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About this Document

These notes are from the introduction to Biology, Chapter 1. I used lots of color-coding and easy-to-read but still detailed bullets. The topics include: Characteristics of Life Classification ...
Biology for Health Sciences
Sikes,Robert Allen
Class Notes
25 ?




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This 6 page Class Notes was uploaded by Madeline LeFrock on Wednesday September 9, 2015. The Class Notes belongs to BISC205010 at University of Delaware taught by Sikes,Robert Allen in Summer 2015. Since its upload, it has received 19 views. For similar materials see Biology for Health Sciences in Biosystem Engineering at University of Delaware.

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Date Created: 09/09/15
The Characteristics of Life Wednesday September 2 2015 539 PM Life exists almost everywhere on Earth Earth possesses a great variety of diverse life forms All living things have certain characteristics in common Organized Acquire materials and energy Reproduce asexual or sexual Respond to stimuli light chemical physical responses Homeostatic our bodies are trying to maintain a chemical balance ex same body tempe Grow and develop 0 Have the capacity to adapt to its environment Causes changes in phenotypic traits outward appearances A cell is the smallest unit of life A tissue is a group of similar cells that perform a particular function Several tissues join together to form an organ Organs work together to form an organ system OOOOOO Levels of biological organization Atom molecule cell tissue organ organ system organism population comI erature munity ecosystem biosphere The Scientific Method Wednesday September 2 2015 542 PM Observation and Hypothesis inductive reasoning use creative thinking to combine isolated facts into a cohesive whole ExperimentObservations deductive reasoning quotifthen o Use of controls standard for comparison Collect Data Conclusions results are analyzed hypothesis is supported or rejected Scienti c Theory many experimentsobservations support a theory Scienti c Principle Observation Scientists are curious want to know how the worldnatural phenomena works Use senses to make observations Extend their abilities by using instruments Hypothesis Tentative explanation for the natural event uses inductive reasoning Presented asafalsifiable statement influenced by personal experiences Should be testable ExperimentFurther Observations Uses quotif then logic Determines how to test a hypothesis uses deductive reasoning Ensure that testing is specific and will produce meaningful results Experimental design is the manner in which a scientist conducts an experiment includes a control Use a model representation of an actual subject 0 Ex computer modeling mice to perform cancer research Data plural Represent results of an experiment 0 Observable and objective NOT subjectiveopinion based Mathematical data is displayed as a tablegraph Statistical data IS used to rule OUT that results were due to Chance Condudon Drawn from analysis of the data to determine if hypothesis can be supported NOT proved The conclusion from one experiment may be used to form a hypothesis for another experiment If results do NOT support the hypothesis then it may be used to form alternative hypotheses Scienti c Theory Concepts that join together wellsupported and related hypotheses Supported by a broad range of observations experiments and data 0 Ex cells homeostasis genes ecosystem evolution 0 Ex theory of evolution is the unifying concept of biology Classification of Organisms Friday September 4 2015 1028 AM 0 Domain most general 0 Archaea 39 Unicellular prokaryotes 39 Live in aquatic environments that lack oxygen or are too saltyhotacidic 39 First cells that evolved o Bacteria 39 Unicellular prokaryotes 39 Found almost anywhere o Eukarya eukaryotes 39 Cells wnuclei Kingdom 0 Kingdoms of domain Eukarya 39 Protista III Complex single cell some multicellular III Absorb photosynthesize or ingest food III Ex paramecium slime mold algae 39 Fungi III Some unicellular most multicellular III Absorb food III Ex yeast mushrooms black bread mold 39 Plantae III Multicellular form wspecialized complex cells III Photosynthesize food III Ex moss fern pine tree 39 Animalia III Multicellular form wspecialized complex cells III Ingest food III Ex human finch earthworm sea star amphibians and reptiles Phylum Class 0 Order 0 Family Genus Species most speci c Scientific Names assigned using taxonomy to give each species a 2part or binomial name Ex humans are Homo sapiens or abbreviated H sapiens Home is the genus sapiens is the species


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