BIO 101 Exam 1 NVCC 061N Questions with Correct Answers

Biological organization - ANSWER-atom, molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere Prokaryote - ANSWER-a small unicellular organism that lacks a nucleus and membrane bound organelles; bacteria and archaea Eukaryote - ANSWER-a cell (or often multiple cells) with a nucleus and membrane-enclosed organelles that have specified functions What creates unity in the diversity of life? - ANSWER-DNA Unified because all organisms have DNA Diverse because of the differences in DNA sequence hierarchical organization - ANSWER-Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species What are the three domains? - ANSWER-Bacteria, Archaea, Eukarya What are the kingdoms of Eukarya? - ANSWER-Protista, Fungi, Plantae, Animalia Scientific Method - ANSWER-observation, hypothesis, experiment, data collection, data analysis, publication, peer review Flexibility of the Scientific Process - ANSWER-Scientists work through the first five steps repeatedly until it is time to publish, when the researchers in that field build consensus and then work toward societal benefits, at which point the scientists may return to forming and testing hypotheses control group - ANSWER-In an experiment, the group that is not exposed to the treatment; serves as a comparison for evaluating the effect of the treatment. standard variable - ANSWER-held constant for all subjects in an experiment scientific theory - ANSWER-a well-tested concept that explains a wide range of observations 7 common properties of life - ANSWER-order (functional purpose for structures), reproduction, growth and development, energy processing, regulation, response to the environment, evolutionary adaptation What characteristic of life is unique to life? - ANSWER-Growth and