BIOL 1011 Midterm Study Guide Answers Spring 2021.docx -...

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BIOL1011K, Introduction to Biology Mid-Term Exam Study Guide Units 1-4 Use the following list of topics to prepare for the final examination. The topics listed below coincide with the textbook’s chapters. Be familiar with: 1. Introduction to Biology a. The Levels of Organization Organelles—cells—tissues—organs—organ system—organism—population—community— ecosystem—biosphere Atoms, molecules (macromolecules), organelles, cells (prokaryotes / eukaryotes), tissues, organs, organ systems, organisms, population, community, ecosystem, biosphere b. The Characteristics of Living Things - Composed of one or more cell. - Reproduces using DNA. - Obtains energy from their and environment. (support metabolism) - Senses their environment and responds towards it. - maintains constant homeostasis. (internal environment) - Can evolve as groups i. Properties of Life- order, sensitivity or response to stimuli, reproduction, adaptation, growth and development, regulation, homeostasis, energy processing ii. Prokaryotes- a unicellular organism that lacks a nucleus or any other membrane-bound organelle iii. vs. Eukaryotes- an organism with cells that have nuclei and membrane- bound organelles -Prokaryotes: single celled organisms, lack organelles surrounded by a membrane, do not have nuclei surrounded by nuclear membranes -Eukaryotes: have membrane-bound organelles and nuclei c. The Process of Science i. Experimental design (the role of a control )- A part of the experiment that does not change . A control is used to establish a baseline to compare the results of the main experiment to . Having a control group rules out any environmental variables, such as temperature and humidity, from affecting the conclusion of the experiment. -does not change ii. Definition of a theory- a thoroughly tested and confirmed explanation for observations or phenomena. A scientific theory is a generally accepted, thoroughly tested and confirmed explanation for a set of observations or phenomena iii. Definition of a hypothesis- a hypothesis is a suggested explanation that can be tested . and what make a hypothesis valid- A hypothesis must be testable to ensure that it is valid. - a suggested explanation for an event, which can be tested. -For a hypothesis to be considered valid, it must make a prediction that scientists can test using a repeatable experiment 1 BIOL 1011K MIDTERM STUDY GUIDE PARTIAL ANSWERED
d. Taxonomy - the branch of science concerned with classification, especially of organisms, systematics. i. Know the three domains- eukara- contains organisms that have cells with nuclei . Entamoebae, slime molds, animals, fungi, ciliates, flagellates, trichomonads, microsporidia, & diplomonads -eukarya: organisms that have cells with nuclei. It includes the kingdoms of fungi, plants, animals, and several kingdoms of protists.

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