Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 22, Problem 3IQ
- a. Explain how the rapid evolution of drug resistance in bacteria is an example of natural selection.
- b. How might multidrug-resistant strains of MRSA have evolved?
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Penicillin was first used in the 1940s to treat gonorrhea infections produced by the bacterium Neisseria gonorrhoeae. In 1984, according to the CDC, fewer than 1% of gonorrhea infections were caused by penicillin-resistant N. gonorrhoeae. By 1990, more than 10% of cases were penicillin resistant and a few years later the level of resistance was 95%.
Explain the various ways this resistance could be spread among the cells. Could this resistance pass to other infectious bacteria from N. gonorrhoeae?
B. The Strange Case of BeriBeri
In 1887 a strange nerve disease attacked the people in the Dutch East Indies. The disease was
BeriBeri. Symptoms of the disease included weakness and loss of appetite. Victims often died of heart
failure. Scientists thought the disease might be caused by bacteria. They injected chickens with
bacteria from the blood of patients with BeriBeri. The injected chickens became sick. However, so did
a group of chickens that were not injected with bacteria from the blood of patients with BeriBeri. One
of the scientists, Dr. Eijkman, noticed something. Before the experiment, all the chickens had eaten
whole-grain rice, but during the experiment, the chickens were fed polished rice. Dr. Eijkman
researched this interesting case. he found that polished rice lacked thiamine, a vitamin necessary for
good health.
1. State the Problem.
2. What was the hypothesis?
3. How was the hypothesis tested?
4. Should the hypothesis be supported or rejected based on the experiment?…
B. The Strange Case of BeriBeri
In 1887 a strange nerve disease attacked the people in the Dutch East Indies. The disease was BeriBeri.
Symptoms of the disease included weakness and loss of appetite. Victims often died of heart failure.
Scientists thought the disease might be caused by bacteria. They injected chickens with bacteria from
the blood of patients with BeriBeri. The injected chickens became sick. However, so did a group of
chickens that were not injected with bacteria from the blood of patients with BeriBeri. One of the
scientists, Dr. Eijkman, noticed something. Before the experiment, all the chickens had eaten whole-grain
rice, but during the experiment, the chickens were fed polished rice. Dr. Eijkman researched this
interesting case. he found that polished rice lacked thiamine, a vitamin necessary for good health.
1. State the Problem.
2. What was the hypothesis?
3. How was the hypothesis tested?
4. Should the hypothesis be supported or rejected based on the experiment?…
Chapter 22 Solutions
Study Guide for Campbell Biology
Ch. 22 - a. Write the capital letter representing the...Ch. 22 - List the two observations from which Darwin drew...Ch. 22 - a. Explain how the rapid evolution of drug...Ch. 22 - Complete the following concept map that summarizes...Ch. 22 - Explain in your own words the main components of...Ch. 22 - Briefly explain the following statement: In...Ch. 22 - Which of the following slogans best describes the...Ch. 22 - Which of the following scientists proposed that...Ch. 22 - Darwin proposed that new species evolve from...Ch. 22 - Each of the following influenced Darwin as he...
Ch. 22 - Darwins publication of On the Origin of Species...Ch. 22 - The smallest unit that can evolve is a(n) a....Ch. 22 - Which of the following statements is not...Ch. 22 - Darwin observed that organisms are capable of...Ch. 22 - What might you conclude from the observation that...Ch. 22 - The remnants of pelvic and leg bones in a snake a....Ch. 22 - The hypothesis that whales evolved from...Ch. 22 - Which of the following sources of evidence...Ch. 22 - When cytochrome c molecules are compared, yeasts...Ch. 22 - Which of the following is an example of convergent...Ch. 22 - Prob. 15TYKCh. 22 - Use the following evolutionary tree representing...Ch. 22 - Evolution by natural selection would be impossible...
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