SLU Biology Exam 1

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SLU Biology Exam 1 order of the hierarchy of life including: biosphere, macromolecule, community, molecule, atom, tissue, organ, organism, ecosystem, organelle, organ system, population, cell - ANS ... - atom, molecule, macromolecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere living and non living organisms follow the same physical laws (true/false) - ANS - true ability to breathe, reproduce, absorb energy, maintain homeostasis, etc - ANS - qualities of a living thing governs structure and function of a cell - ANS - genetic information contains instructions for the cell - ANS - DNA what process leads to gene expression - ANS - protein synthesis genetics, organization, metabolism, energy flow, homeostasis, reproduction/development, population changes - ANS - characteristics of life the ability of a cell / organism to extract and use energy - ANS - metabolism photosynthetic organisms are .... - ANS - primary producers animals are producers, consumers, or decomposers? - ANS - consumers the maintenance of a steady internal conditions (all living things have this ability) by responses that compensate for external changes - ANS - homeostasis allows gene information to be passed on - ANS - reproduction -fundamental process of life -changes over time -unifying theme in biology - ANS - biological evolution -produced mechanism for evolution -went on a 5 year voyage around the world -introduced natural selection - ANS - Darwin & Wallace breeding specific groups / human choice - ANS - artificial selection -mechanism of evolution -changes what's found in DNA over generations -nature's choice - ANS - natural selection -random changes in DNA -causes variability in the structure, number, or arrangement of DNA molecules - ANS - mutation -favorable mutations -helps organisms survive longer - ANS - adaptation includes all populations of individuals that have very similar structure, biochemistry, and behavior; can successfully interbreed - ANS - species group of similar species that share recent common ancestry - ANS - genus 2 part scientific name: -1st identifies ___________ -2nd identifies _____________________ - ANS - genus, species within that genus what are the three domains? - ANS - prokaryotes, archaea, eukaryotes unicellular/prokaryotes (domains) - ANS - bacteria and archaea domain containing eukaryotes - ANS - eukarya which domain is known as extreme and closely related to us? - ANS - archaea what is included in the domain eukarya? - ANS - protists, plants, fungi, and animals ________________ don't have cell walls - ANS - animal cells which is known generally as a decomposer? protists, plants, fungi, or animals? - ANS - fungi life as we know it would be impossible without __________ - ANS - water -anything that occupies space and has mass -composed of elements and combinations of elements - ANS - matter pure substance - ANS - element what are the four key elements? - ANS - carbon, hydrogen, oxygen, and nitrogen molecules whose component atoms are different - ANS - compound negative charge; circle around the nucleus - ANS - electrons positive charge; located in the nucleus - ANS - protons neutral charge; located in the nucleus - ANS - neutrons atoms are identified by their ___________________ - ANS - atomi [Show More]

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