Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 12.3, Problem 1CC
In Figure 12.14, why do the nuclei resulting from experiment 2 contain different amounts of DNA?
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Chapter 12 Solutions
Campbell Biology (11th Edition)
Ch. 12.1 - How many chromosomes are drawn in each part of...Ch. 12.1 - WHAT IF? A chicken has 78 chromosomes in its...Ch. 12.2 - How many chromosomes are shown in the illustration...Ch. 12.2 - Compare cytokinesis in animal cells and plant...Ch. 12.2 - During which stages of the cell cycle does a...Ch. 12.2 - Compare the roles of tubulin and actin during...Ch. 12.2 - A kinetochore has been compared to a coupling...Ch. 12.2 - MAKE CONNECTIONS What other functions do actin...Ch. 12.3 - In Figure 12.14, why do the nuclei resulting from...Ch. 12.3 - How does MPF allow a cell to pass the G2 phase...
Ch. 12.3 - MAKE CONNECTIONS Explain how receptor tyrosine...Ch. 12 - Differentiate between these terms: chromosome,...Ch. 12 - In which of the three phases of interphase and the...Ch. 12 - Explain the significance of the G1, G2, and M...Ch. 12 - Through a microscope, you can see a cell plate...Ch. 12 - Vinblastine is a standard chemotherapeutic drug...Ch. 12 - One difference between cancer cells and normal...Ch. 12 - The decline of MPF activity at the end of mitosis...Ch. 12 - In the cells of some organisms, mitosis occurs...Ch. 12 - Which of the following does not occur during...Ch. 12 - Cell A has half as much DNA as cells B, C, and D...Ch. 12 - The drug cytochalasin B blocks the function of...Ch. 12 - VISUAL SKILLS The light micrograph shows dividing...Ch. 12 - DRAW IT Draw one eukaryotic chromosome as it would...Ch. 12 - EVOLUTION CONNECTION The result of mitosis is that...Ch. 12 - SCIENTIFIC INQUIRY Although both ends of a...Ch. 12 - WRITE ABOUT A THEME: INFORMATION The continuity of...Ch. 12 - SYNTHESIZE YOUR KNOWLEDGE For selected answers,...
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- If the DNA of one human cell is stretched out, it would be almost 6 feet long and contain over three billion base pairs. How does all this fit into the nucleus of one cell?arrow_forwardYou are trying to determine the base content for a number of samples in the lab (mouse DNA, bacterial DNA, single-stranded DNA virus and double-stranded RNA virus). Unfortunately, you failed to use an alcohol-proof marker and during the ethanol precipitation of your samples the labels came off the tubes. You finish the experiment anyway and try to use the data to determine the samples. Can you determine the source of each sample based on your results? Briefly explain how you come to your designations. Sample % adenine % cytosine % guanine % thymine % uracil A 18 32 32 18 0 B 26 18 32 24 0 C 31 19 19 0 31 D 10 40 40 10 0arrow_forwardEach cell of the human body contains 46 chromosomes. How many DNA molecules does this statement represent? How many different types of DNA molecules does it represent?arrow_forward
- Researchers are designing several experiments to test the ability of Salmonella bacteria to develop antibiotic resistance. A culture of Salmonella bacteria is exposed to the same concentrations (200 mg/L) of an antibiotic for four days. The table shows the number of isolated resistant bacteria over a four-day period. Which of the following statements best explains these results? A - The bacteria were not affected by the antibiotic. B - After being exposed to the antibiotic, the bacteria altered their DNA. C - A new species of bacteria emerged after the antibiotics were introduced. D - Random mutations led some bacteria to be resistant and, over time, they increased in the population.arrow_forwardWhat is DNA? Provide a 5-sentence long description only.arrow_forwardSuppose a region of DNA is 100 bp long. How many unique sequences could it potentially represent? A) 1004 B) 4100 C) 400 D) 4,000 E) 10,000arrow_forward
- what is the significance of famous dna structure experiment?arrow_forwardYou have isolated a new bacteriophage and determined that the composition of its is nucleic acid is 17% A, 26% C, 34% G, and 23% T. What would you conclude about its genome? (One sentence, please)arrow_forwardWhat is the role of the liquid detergent used in the experiment? a) It allows the DNA to unwind. b) It aids filtration. c) It helps break down the cell membrane. d) It helps keep the DNA soluble in solution.arrow_forward
- A person cannot see a single cotton thread 100 feet away, but if you wound thousands of threads together into a rope, it would be visible much further away. Is this statement analogous to our DNA extraction? Explain.arrow_forwardA person can't see a single cotton thread for classrooms away. But if you wound thousands of them together into a rope, it'd be visible at the same distance. How is this statement an analogy to the DNA extraction of a strawberry?arrow_forwardWhat distance separates base-pairs in the Watson-Crick model of DNA? 2.3Å O 3.4Å 4.5Å 5.6Åarrow_forward
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