Answer the following question given this paragraph: Potential energy is energy that is stored in a person or object. Q: Energy that is stored in a person or object is called? Choices: - vertical energy - mechanical energy - kinetic energy - potential energy A:
potential energy
Answer the following question given this paragraph: Learn some applications of radioactivity. Radioactive isotopes have a variety of applications. Generally, however, they are useful because either we can detect their radioactivity or we can use the energy they release. Radioactive isotopes are effective tracers because their radioactivity is easy to detect. A tracer is a substance that can be used to follow the pathway of that substance through some structure. For instance, leaks in underground water pipes can be discovered by running some tritium-containing water through the pipes and then using a Geiger counter to locate any radioactive tritium subsequently present in the ground around the pipes. (Recall that tritium is a radioactive isotope of hydrogen. ) Tracers can also be used to follow the steps of a complex chemical reaction. After incorporating radioactive atoms into reactant molecules, scientists can track where the atoms go by following their radioactivity. One excellent example of this is the use of carbon-14 to determine the steps involved in. Q: What is the name for a substance that can be used to follow the pathway of that substance through some structure? Choices: - gel - tracker - solution - tracer A:
tracer
Q: Answer the following question given this paragraph: Active versus Passive Immunity Immunity to pathogens, and the ability to control pathogen growth so that damage to the tissues of the body is limited, can be acquired by (1) the active development of an immune response in the infected individual or (2) the passive transfer of immune components from an immune individual to a nonimmune one. Both active and passive immunity have examples in the natural world and as part of medicine. Active immunity is the resistance to pathogens acquired during an adaptive immune response within an individual (Table 21.6). Naturally acquired active immunity, the response to a pathogen, is the focus of this chapter. Artificially acquired active immunity involves the use of vaccines. A vaccine is a killed or weakened pathogen or its components that, when administered to a healthy individual, leads to the development of immunological memory (a weakened primary immune response) without causing much in the way of symptoms. Thus, with the use of vaccines, one can avoid the damage from disease that results from the first exposure to the pathogen, yet reap the benefits of protection from immunological memory. The advent of vaccines was one of the major medical advances of the twentieth century and led to the eradication of smallpox and the control of many infectious diseases, including polio, measles, and whooping cough. Q: Active and passive forms of what enable the body to resist damage from pathogens? Choices: - potential - stem cells - autonomy - immunity A:
A: immunity
Question: Answer the following question given this paragraph: A lava plateau is made of a large amount of fluid lava. The lava flows over a large area and cools. This creates a large, flat surface of igneous rock. Lava plateaus may be huge. The Columbia Plateau covers over 161,000 square kilometers (63,000 square miles). It makes up parts of the states of Washington, Oregon, and Idaho. Q: When lava flows over a large area and cools, it creates a large, flat surface of what type of rock? Choices: - tidal - sedimentary - metamorphic - igneous A:
Answer: igneous
*Question*
Answer the following question given this paragraph: Q: Most terrestrial vertebrates have what type of lungs? Choices: - extra - external - mechanical - internal A:
**Answer**
internal
Answer the following question given this paragraph: Q: Many enzymes require nonprotein helpers for what activity? Choices: - hydrogen - kinetic - functional - catalytic A:
catalytic