Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 1, Problem 4Q
Summary Introduction
To analyze:
The classification of the investigation carried out as comparative or controlled study as well as to design a separate one for studying adaptations of organisms in different cases.
Introduction:
A comparative study requires the comparison of the data collected from various sources at different conditions while a controlled study requires the experiment to be carried out at a specific condition, for example, temperature, pH (potential of hydrogen ion), and different salt concentrations. An experiment was conducted to evaluate the acclimatization and adaptability of bacteria to antibiotics. The results are depicted in the graph below where the survival rates of the bacterial populations at different antibiotic concentrations are shown.
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Life: The Science of Biology
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- Imagine you work for an industrial chemical company and you have been asked to design a novel cleaning agent against a group of microorganisms. Select a specific organism representative of the group you chose, gather information about it, and identify the potential "target" within the organism suitable for your cleanser to attack, discussing how your chemical will control the growth of the organism. Consider things such as concentration, amount of time needed for exposure, or anything else that would influence efficacy.arrow_forwardYou will have the opportunity to explore the effectiveness of six different antibacterial substances against a certain species of bacteria. You will follow scientific procedures by questioning, forming a hypothesis, setting up and conducting an experiment, analyzing results, and forming a conclusion. You will determine the comparative effectiveness of six antibiotics. What is the dependent variable? What is the independent variable?arrow_forwardHow is human activity influencing how microorganisms interact in their natural environment? Provide at least 1 examplearrow_forward
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