The five-year survival rate of ____________________ cancer is only 13%. Fill in the blank(s) with the appropriate word(s)
lung
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Why is it important to learn about rabies when only a few cases occur in the United States each year?
A. The US isn't the entire world. Rabies might be more common in other areas, and it's important to understand due to its lethality. B. The only reason why rabies isn't common in the US is due to our lack of interaction with animal carriers. We could very easily have an outbreak on our hands if we don't know the warning signs to watch for that we've learned about by studying the virus and disease. C. Rabies can never be completely eliminated-it has too many different animal reservoirs/carriers. As such, we need to remain constantly aware of how to protect human populations, both by preventing and treating the illness. We can only do that by learning about it. D. All of the above are correct.
Conjugation is
1.the uptake of naked DNA from the environment. 2.mediated by bacteriophages. 3.when a copy of DNA from one bacterial cell enters another cell. 4.when one cell divides. 5.when DNA is exchanged between sexually reproducing organisms.
Which energy-producing process is thought to have come first during cellular evolution?
a. Photosynthesis b. Glycolysis c. Oxidative phosphorylation d. All originated at the same time
Which of the following statements is most true concerning speciation by polyploidy?
a. Polyploidy has been an important driver of plant diversification. b. Polyploidy only leads to speciation in plants. c. Botanists believe only a few plant species have arisen through polyploidy. d. Polyploidy only leads to speciation in animals. e. Polyploidy is common but has no effect on speciation.