Biology 101 First Exam chapters 1-3 Questions With Verified Solutions

Biology 101 First Exam chapters 1-3 Questions With Verified Solutions What are characteristics of living things - answer1. Living things contain nucleic acids,proteins, carbohydrates, and lipids. 2. Living things are composed of cells 3. Living things grow and reproduce 4. Living things use energy and raw materials 5. Living things respond to their environment 6. Living things maintain homeostasis 7. Populations of living things adapt and have adapt traits Metabolism - answerrefers to all chemical reactions that occur within the cells of living things. Metabolic activities extract energy from various nutrients and transform it to do different types of work. Homeostasis - answerthe relatively constant and self correcting internal environment of a living organism. Homeostasis keeps body temperature within its limits for survival. Adaptive traits - answertraits that help it survive and reproduce in its natural habitat Population - answerindividuals in the same species living in distinct geographic area example: four-eyed butterfly fish living in a coral reef Community - answerall living species that can potentially interact in a particular geographic area example: all species living in a coral reef Ecosystem - answerall the living organisms in a community along with their physical environment Biosphere - answerThe part of the earth that supports life. The layer of the earth where life lives. Example: If the earth were a basketball the biosphere would be the orange paint Science - answerA systematic approach to answering those questions, a way of acquiring knowledge through carefully documented investigation and experimentation- the scientific method The Scientific method - answer1. Make careful observations, and ask a question about the observation 2. Develop a testable hypothesis as a possible answer to your question 3. Make a prediction based on your hypothesis, and test it with a controlled experiment 4. Draw a conclusion based on the result of the experiment 5. Make new predictions and test them. Controlled Experiment - answerAn experiment where the subjects being tested are split into two groups; the control group and the experimental group Variable - answerwhose effect the experiment is designed to reveal Statistical Significance - answerThe measure of the possibility that the results were due to chance. Probability less than 5% that the results are due to chance is generally acceptable. The lower the number the more confidence that the results are accurate. Theory - answerA well supported and wide-ranging explanation of some aspect of the physical universe. Inductive Reasoning - answerFacts are accumulated through observation until the sheer weight of the evidence allows some logical general statement to be made. Inductive reasoning is used to develop a testable hypot