Exam 1 - Bio 311C Exam#1 Study Sheet Lecture#1 Definition...

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Bio 311C Exam #1 Study Sheet Lecture #1: Definition and chemical basis of life Requirements of Life: sexual, asexual reproduction, metabolism, growth Sexual Reproduction Asexual Reproduction - Bud off identical cell Metabolism - Must consume. Derivation of energy from food to fuel cellular processes. Conversion of energy from one form to another. Growth - Replicate themselves to form new organic material for new living cells. The number of cells increases as well as the volume of the cells. Properties of Life: order, reproduction, growth and development, energy utilization, response to the environment, homeostasis, evolutionary adaptation Order - Life isn’t random, it’s a highly ordered system Reproduction - All organisms must reproduce. Growth and Development - Everything grows in a different way. Energy utilization - All animals consume to fuel their own energy. Response to Environment - To survive all organisms must respond to their environment. Homeostasis - Ability to maintain a balanced internal environment. Evolutionary Adaptation, Extinction- All organisms must adapt over time to environmental conditions. If they fail to adapt, they will become extinct. Cell Theory, Definition of a cell Cell - Simplest collection of matter that can live. Cell Theory - (1839) Never disproved in a scientific experiment, all organisms are composed of one or more cells, and all cells come from other cells. Components common to all cells: plasma membrane, DNA, ribosomes Plasma Membrane - Encloses the cytoplasm, which keeps all liquid inside of the cell; regulates the passage of molecules into and out of the cell. DNA - Hereditary molecule that is passed from one generation to the next; the blueprint for protein synthesis. Ribosomes - Site of protein synthesis. Main cell types: prokaryotes, eukaryotes Prokaryotes - Includes bacteria and archaea; have no nucleus, no membrane-bound organelles, and DNA is a single circular chromosome Eukaryotes - Includes plants, fungi, animals, and protists. More complex type of cell has a nucleus, membrane-bound organelles, and more than one linear chromosomes of DNA. Chemical Basis of Life
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Elements - Substances with specific properties that cannot be broken down to another substance by ordinary chemical reactions. Atoms - Smallest units of matter that retain the properties of the element. Molecules - Two or more atoms held together by a covalent bond. Protons - Positively charged particle that can be found in the nucleus of an atom with the neutrons. Electrons - Negatively charged particle that is repelled by the protons and is found in the shells of an atom. Anion
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This test prep was uploaded on 04/07/2008 for the course BIO 311C taught by Professor Satasivian during the Spring '08 term at University of Texas.

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Exam 1 - Bio 311C Exam#1 Study Sheet Lecture#1 Definition...

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