BIO 181 Exam 1 NCSU, Exam Questions & Answers, 100% Accurate. VERIFIED.

BIO 181 Exam 1 NCSU, Exam Questions & Answers, 100% Accurate. VERIFIED. 7 Characteristics of Life (GECHOES) - -1. Growth, Development, Reproduction 2. Energy Utilization 3. Cells 4. Homeostasis 5. Ordered Complexity 6. Evolutionary Adaptation 7. Sensitivity Viruses are the exceptions Hierarchical organization of living systems - -1. Cellular Level 2. Organismal Level 3. Population Level 4. Ecosystem Leve 5. Biosphere Fundamental Unit of Life - -Cells Emergent Properties - -More than sum of it's parts, not additive Cannot be deduced by looking at parts themselves Interaction of components Ex. life Steps of the Scientific Method - -1. Observation 2. Hypothesis Formation 3. Prediction 4. Experimentation 5. Conclusion 3 Important Variables for Experiments - -1. Independent: condition 2. Dependent: measurement 3. Control: variables that are not changed Qualitative Reasoning - -Characteristics, descriptions, data observed but can't be measured (ex. colors, smell, beauty, etc.) Quantitative Reasoning - -Values and numbers, measured (ex. length, height, time, etc.) Evolution - -Change over time Two types: Macroevolution and Microevolution Acts on the population Macroevolution - -Evolution of new species from old species (speciation) Changes occur over long periods of time Microevolution - -Evolutionary changes within species Changes inheritable characteristics/allele frequency over time Allele - -Trait or form of gene 5 Modes of Evolution (MaNaGGeR) - -Mechanisms/ Forces: forces that change the genetic structure of a population 1. Mutation 2. Natural Selection 3. Gene Flow (migration) 4. Genetic drift (random) 5. Recombination/Non-Random mating Lamarck - -Thought that organisms changed their behavior in response to environmental change; and in turn, that the behavioral change modified physical traits that were passed on to offspring Genotype - -Genetic constitution of an organism and has at least two forms of a gene Mutation - -An allele changes to another allele, thereby altering gene Rare Only source of NEW alleles; create and maintain new genetic variation Point Mutation - -Single base in DNA sequence is changed most common type of