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BSC 1005 FINAL COMPLETE EXAM WITH QUESTIONS AND ANSWERS
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BSC 1005 FINAL COMPLETE EXAM WITH QUESTIONS AND ANSWERS...
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BSC 1005 FINAL CO MPLETE EXAM WITH QUES TIONS AND ANSW ERS absorb; photosynthesis - ANSWER Under _______________, plants such as maple trees ______________ CO2. - release; respiration of cells - storage; respiration of cells - release; the process of photosynthesis - uptake; respiration of cells Assimilation; photosynthesis Environmentally adapted alleles improve an organism's fitness by enabling greater survival and reproduction. As a result, advantageous alleles are inherited by subsequent generations and eventually become more common in the population. - ANSWER Choose the response that best explains the interaction between fitness and natural selection that results in adaptation. -Over the course of a lifetime, an individual develops qualities that improve fitness and passes them on to their progeny. A population of organisms' characteristics change throughout time, some of which make the organisms better or worse adapted to their surroundings. -Well-adapted alleles boost an organism's fitness, enabling greater survival and reproduction. As a result, advantageous alleles are inherited by subsequent generations and gradually become more common in the population. -Every member of a population carries the same alleles, which means that over time, the resulting qualities are handed down through the population without changing in frequency. -Since they are not heritable qualities, randomly occurring alleles that provide an organism with an advantage in the environment are not passed on to progeny. Because it is consuming energy that the resistant strains can use for other things, like reproduction, its fitness would be lower than that of other strains that lack resistance. - ANSWER: When a bacterial cell develops resistance to a specific antibiotic, it may expend a lot of energy making the altered proteins required for the resistance. What impact would an absence of antibiotic have on this cell's fitness in such a scenario? Because it is consuming energy that the resistant strains can use for other things, like reproduction, its fitness would be lower than that of other strains that lack resistance. -Because bacteria can obtain so much energy from their surroundings, resistance would not affect their fitness, making it no different from other strains that lack it. Due to its higher energy availability compared to other strains with no resistance, it would be more fit. Its resistance to future environmental changes means that its fitness would be higher than that of other strains with no resistance. Since none of the strains are impacted by antibiotics, its fitness would be the same as that of other strains lacking resistance. Which of the following is NOT a dragonfly wing that contains features similar to those of the human arm? -Tiktaalik fin -wing of a bird -bat wing -turtle flipper -wing of a dragonfly Which of the contemporary horse's ancestors is also the closest common ancestor to Parahippus? Miohippus. -Hypohippus -Miohippus -Calippus -Orohippus -Epihippus -variations in the annual precipitation totals -diversity in temperature ranges - ANSWER Evergreen trees dominate the taiga biome, whereas evergreens and trees that lose their leaves in the winter dominate the temperate forest biome. Which of the following characteristics explains these variations in plant life? Choose the TWO accurate responses. -the diversity of human endeavours within each -different animal species that live in every biome -variations in the annual precipitation totals -division based on geographical borders -differences between temperature ranges The removal of trees from the ecosystem on a wide scale contributes to the greenhouse effect because land plants absorb carbon dioxide from the atmosphere through photosynthesis. - ANSWER The rate of climate change is accelerated by human actions like deforestation. Which of the following best describes how the carbon cycle works and why deforestation contributes to global warming? -The removal of trees raises the Earth's surface temperature overall by exposing a sizable portion of the land to sunlight. -Because land plants absorb carbon dioxide from the atmosphere through photosynthesis, removing a significant amount of trees from the environment intensifies the greenhouse effect. Since trees, like coal and natural gas, are fossil fuels, burning them reduces the quantity of greenhouse gases discharged into the environment. Common deforestation techniques, such as slash-and-burn, reduce the quantity of carbon dioxide emitted into the atmosphere. -The greenhouse impact is lessened when forests are removed because these plants emit less carbon dioxide during cell respiration. -Use less electricity and a greater amount of carbon-free power sources, such wind and solar energy. -Use carpooling, public transit, and more fuel-efficient automobiles to reduce the amount of petrol used for transportation. - ANSWER: What adjustments can people make to lessen their influence on the atmospheric concentration of carbon dioxide? Choose the TWO accurate responses. -Use more natural resources for industrial and economic growth, such as coal and lumber. -Avoid pesticides and genetically engineered organisms; only eat organic, ethically sourced produce. -Use less electricity and a greater amount of carbon-free power sources, such wind and solar energy. -Use carpooling, public transit, and more fuel-efficient automobiles to reduce the amount of petrol used for transportation. -Convert from using petroleum-based energy to electricity produced by dams that harness the energy of falling water. oceans: ANSWER Which biome encompasses the largest area of the surface of the Earth? -grasslands Oceans -arid -tropical woodland -taiga A population of brown toads experiences a mutation that results in green stripes, improving their ability to blend in with their surroundings. - ANSWER Choose the situation in which a population's mutation could become fixed. -A population of Eastern grey squirrels, which typically have long, bushy tails, has a mutation that results in a stubby tail. -A recent mutation has made some bacteria in a population resistant to the antibiotic erythromycin susceptible to the drug. -A mutation that results in light skin appears in a group of South Americans who live close to the equator. -A mutation for lactose intolerance arises in a community whose primary source of nutrition is the milk of their livestock. -A mutation results in green stripes in a population of brown toads, improving their ability to blend in with their surroundings.The benefits of buying summaries with Stuvia:
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