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Hogar Banco de preguntas Biología Archive 2024 December 14

Biology Questions from Dec 14,2024

Browse the Biology Q&A Archive for Dec 14,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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For each of the comparisons below, indicate which is likely to have the higher levels of genetic diversity, considering ONLY the factor mentioned. Assume all other factors are the same between the two. Of the two choices, choose the one with expected HIGHER genetic diversity. Population A (recently founded by a few individuals) vs Population B ( recently founded by many individuals) \begin{tabular}{l} Population A (almost all males and \\ females mate successfully) vs Population ] \\ B (almost all females mate successfully \\ but only a few males mate successfully) \\ \( \begin{array}{l}\text { Population A (recently went through a } \\ \text { population bottleneck) vs Population B } \\ \text { (no population bottleneck) }\end{array} \) \\ \hline\end{tabular} Population A Choose ] A species of fish lives in lakes. One abiotic factor that limits which lakes it can survive in is the temperature of the water (it cannot tolerate water that is too hot or frozen (obviously)). Other factors that might affect whether the fish can live in this lake are: A. Diversity of predators in the lake B. Concentration of dissolved oxygen in the lake C. pH of the lake water D. Concentration of particular bacteria in the lake Which two of the above factors (listed by letter) are ABIOTIC factors? A and B B and C A and C B and D C and D Two species of birds both eat the same general types of insects. Assume the insects in an area are in short supply; they both live there. Which of the following would be the LEAST LIKELY outcome of this competition for food? All individuals choose to eat less so more is available for all Each species begins to specialize on the specific fruits they can reach/eat better than the other The species that is a better competitor outcompetes the other Based on what we covered in class, which of the following is considered the most serious cause of species extinctions/loss of biodiversity in the world today? Habitat loss Air Pollution Water Pollution Poaching Which of the following is considered part of the specific (as opposed to non-specific) immune response? Lysozyme Macrophages Interferon B lymphocytes = B cells Macrophages and other cells in the body sometimes act as "antigen-presenting cells". Which of the following responds to "presented antigen"? Lysozyme" Blymphocytes Other macrophages Tlymphocytes All of the following statements are true about inbreeding EXCEPT: (choose the one that is NOT true) Occurs when individuals breed with close genetic relatives Tends to lead to a higher incidence of genetic defects More common in large populations than small populations, all else being the same Inbred offspring would tend to have lower genetic diversity than outbred offspring Robert Paine did a removal experiment with sea stars in the genus Pisaster. When he removed Pisaster individuals from some areas of the intertidal, which of the following was the outcome he noted? The better competitors in the area took over, excluding some others and reducing diversity Many new species moved in Almost all of the other species died The diversity of other species increased A parasitoid is considered different than a parasite because parasitoids: Are larger than parasites Are insects while parasites are not Eventually always (or almost always) kill their hosts Use chemicals to affect the hosts while parasites do not In some cases of mimicry, two different toxic species of insects evolve to have similar bright coloration that potential predators quickly leam to avoid. In this instance, the interaction between the two insect species would be considered: Competition Predation Mutualism Parasitism
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