Biology Questions

Which of the following is the only cell organelle that is capable of converting light energy into chemical energy?
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Why is it relatively rare to observe a solar eclipse
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Over time, the climate of a region becomes cooler. How will this most likely affect the species living in that region?.
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Kristen cut her hand on a piece of glass. As the blood clots, how do white blood cells prevent bacteria on the glass from infecting her blood.
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Identify this symbol.Cl-
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Which of the following statements about rural communities is true? a. Rural communities can support any population size. b. More people in the United States live in rural communities than they did in 1900. c. Rural communities were built based on the location of available resources. d. People in developed countries are moving back to rural communities...
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_____ are blood cells that assimilate bacteria and foreign invaders. Antibodies Leukocytes Hemoglobin Platelets
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Many soils can be distinguished from other samples by their color and texture. True False
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A farmer sprays insecticide on his crops to kill unwanted insects. Most of the insects die, and the chemicals have the effect of damaging the DNA of the insects that are not killed. Which of these has happened?A. Sexual selection among the insects has changed the gene pool.B. Genetic equilibrium has been maintained.C. Mutations have arisen that may have altered allele frequencies.D. Individuals with new genes have immigrated into the population.
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The three basic principals of training that are the foundation for developing a successful personal fitness program are ________________ A. overload , progression and specificity B. Endurance , strength and agility C. overload , frequency and progression D. cardiovascular training , strength training and flexibility
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How do animals obtain the nitrogen they use to make proteins and nucleic acids? A. by consuming plants or other animals B. by absorbing ammonia from bacteria growing in the roots of plants C. by breathing the nitrogen present in the atmosphere D. by absorbing nitrogen found in the soil
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Used fuel assemblies are typically considered _______. a. low-level waste b. uranium mill tailing c. high-level waste d. all of the above
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Fingerprints cannot be used to identify particular people. True False
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.What structures might be found on the underside of fern leaves? seeds pollen spores
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Emilio tries to jump to a nearby dock from a canoe that is floating in thewater. Instead of landing on the dock, he falls into the water beside thecanoe. Use Newton’s third law to explain why this happened. Hint: Firstidentify the action-reaction pair in this example.
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The _______ the time period during which a species lived and the _______ the distribution of its fossils, the better an index fossil the species is. shorter; narrower shorter; wider longer; narrower longer; wider
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Which best describes the process of radiation? A. Warm air transfers heat energy to cold air. B. Sunlight transfers energy to land, air, or water. C. Cold air transfers heat energy to warm air. D. Reflections from the surface warm the atmosphere.
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Some bacteria benefit mammals by helping with?
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