Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780133910605
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 3AC
Review Alexander Fleming’s experiment that led to the discovery of penicillin. What would be an appropriate control for the experiment in which Fleming applied filtered medium from a Penicillium culture to plates of bacteria?
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Attached below is the study about the effects of handwashing and the effectiveness of soap against bacteria. What conclusions can be generated from this result?
A
C
before washing hands
10 second hand wash
B
D
hot water only rinse
30 second hand wash
Figure 8: Agar plates with bacteria A) before washing hands B) after rinsing hands in hot water C) After washing
hands with soap for 10 seconds and D) after washing hands for 30 seconds. Images show that the number of
bacteria on the plate are not greatly reduced after a hot water rinse or 10 second handwash but bacterial levels are
reduced after a proper hand wash for 30 seconds.
What is the purpose of staining bacteria? What is the purpose of collecting bacteria from different sources and staining them. What can you learn from this type of experiment?
The Kirby-Bauer test examines the effectiveness of antibiotics and disinfectants or antiseptics on separately plated bacteria. Which of the following Zones of Inhibition (ZOI) measurements on a plate of Klebsiella pneumoniae shows the strongest inhibition of the bacterium's growth?
a) Penicillin, 7 mm ZOI
b) Actinomycin, 9 mm ZOI
c) Tetracycline, 26 mm ZOI
d) Chloramphenicol 2 mm ZOI
e) Streptomycin, 23 mm ZOI
Chapter 1 Solutions
Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
Ch. 1.1 - Describe the source of the energy stored In the...Ch. 1.1 - Prob. 1CYLCh. 1.1 - explain why these characteristics are necessary to...Ch. 1.1 - describe how reproduction allows evolution to...Ch. 1.1 - The Boundaries of Life Are viruses alive? Viruses...Ch. 1.2 - explain what mutations are, how they occur, what...Ch. 1.2 - explain how natural processes lead inevitably to...Ch. 1.2 - describe how a new species can be produced by...Ch. 1.2 - The largest dinosaurs were plant-eaters. Based on...Ch. 1.3 - Prob. 1CYL
Ch. 1.3 - Prob. 2CYLCh. 1.3 - describe the fundamental differences between...Ch. 1.3 - What current, ongoing environmental change is...Ch. 1.4 - describe the principles underlying science?Ch. 1.4 - outline the scientific method?Ch. 1.4 - explain why controls are crucial in biological...Ch. 1.4 - explain why fundamental scientific principles are...Ch. 1.4 - distinguish between inductive and deductive...Ch. 1.4 - Prob. 1TCCh. 1.4 - Fruit flies, bacteria from hot springs, sea...Ch. 1.4 - The Boundaries of Life If viruses aren't a form of...Ch. 1 - Evolution is a. a belief. b. a scientific theory....Ch. 1 - Prob. 2MCCh. 1 - Prob. 3MCCh. 1 - Prob. 4MCCh. 1 - Which one of the following is True? a. The...Ch. 1 - Organisms respond to ________. Organisms acquire...Ch. 1 - Prob. 2FIBCh. 1 - Prob. 3FIBCh. 1 - Prob. 4FIBCh. 1 - Prob. 5FIBCh. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - What are some differences between prokaryotic and...Ch. 1 - What basic principles underlie scientific inquiry?Ch. 1 - Prob. 7RQCh. 1 - Prob. 8RQCh. 1 - Explain the differences between inductive and...Ch. 1 - List the steps in the scientific method with a...Ch. 1 - What misunderstanding causes some people to...Ch. 1 - Prob. 2ACCh. 1 - Review Alexander Flemings experiment that led to...Ch. 1 - Prob. 4ACCh. 1 - Prob. 5AC
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