Biology: The Unity and Diversity of Life
15th Edition
ISBN: 9780357093795
Author: STARR
Publisher: CENGAGE LEARNING (CUSTOM)
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Chapter 19, Problem 2DAA
Antibiotic Effects on Mitochondria Tetracyclines are antibiotics that inactivate bacterial ribosomes. Knowing that mitochondria evolved from bacteria, researchers suspected tetracyclines might affect mitochondria by harming their ribosomes. FIGURE 19.11 shows the effects of an experiment in which mice were given either tetracycline or a control antibiotic that affects cell wall production. After 10 days of treatment, the function of mitochondria in the mice was assessed.
FIGURE 19.11 Effects of tetracycline on mitochondria. Mice received low-dose tetracycline, high-dose tetracycline, or a control antibiotic that targets bacterial cell walls. Mitochondrial function was assessed by looking at oxygen consumption rate and ATP content in homogenized mouse livers. Bar graphs show means with standard error. An * indicates a statistically significant difference between the experimental and the control treatments.
Which rats had the least ATP in their livers?
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Chapter 19 Solutions
Biology: The Unity and Diversity of Life
Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Antibiotic Effects on Mitochondria Tetracyclines...Ch. 19 - Which of the following is NOT true of conditions...Ch. 19 - An abundance of _______ in Earth's early...Ch. 19 - Stanley Miller's experiment demonstrated that...Ch. 19 - According to one hypothesis, negatively charged...Ch. 19 - The prevalence of _______ in living organisms is...Ch. 19 - Prob. 6SQ
Ch. 19 - Among prokaryotes, only the cyanobacteria _______....Ch. 19 - The evolution of _______ resulted in the eventual...Ch. 19 - Evolution of _______ increased the energy...Ch. 19 - Infoldings of the plasma membrane into the...Ch. 19 - The host cell in the endosymbiosis that produced...Ch. 19 - A stromatolite is a structure __________ . a....Ch. 19 - Prob. 13SQCh. 19 - Which of the following events did NOT occur during...Ch. 19 - Chronologically arrange the evolutionary events,...Ch. 19 - Researchers looking for fossils of the earliest...Ch. 19 - The astronomer Carl Sagan once said, "We are made...Ch. 19 - How did the evolution of oxygen-releasing...Ch. 19 - Just as all life shares a last universal common...
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- The endoplasmic reticulum (ER) and Golgi apparatus are two organelles that are not physically joined, yet materials can still be exchanged between them. How can materials, such as proteins, move between the ER and Golgi when these organelles are not touching each other? A) When a substance such as a protein needs to move between these organelles, it is first dismantled in one organelle, then reassembled when it arrives at the other organelle. B) Substances such as proteins can travel between these organelles within transport vesicles. C) None of these; a single molecule will not go from one organelle to another. D) Substances like proteins will move between these organelles by diffusion through the cytoplasm. ..arrow_forwardBiologists have long been interested in the effects of radiation on cells. In one experiment, researchers examined the effect of radium on mitosis of chick embryo cells growing in culture. A population of experimental cells was examined under the microscope for the number of cells in telophase (as a measure of mitosis occurring) before, during, and after exposure to radium. The results are shown in the Figure. What is the effect of radium exposure on mitosis? Source: R. G. Canti and M. Donaldson. 1926. The effect of radium on mitosis in vitro. Proceedings of the Royal Society of London, Series B, Containing Papers of a Biological Character 100:413419.arrow_forwardWhich of the following is a feature common to all three components of the cytoskeleton?arrow_forward
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