- A) The surviving organisms will evolve into a new species.
- B) The reduced population will likely have allelic frequencies that are different from the initial population.
- C) The population will adapt to deeper waters to avoid future landslides.
- D) The reduced population will have a greater number of different genes than the initial population.
Microbiology MCQ
Total MCQ: 174
MCQ Quiz on Microbiology
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52 The scientists can best determine whether the new trait evolved independently in each population by determining which of the following?
- A) The relative fitness of each population in the presence of the new trait.
- B) The genetic sequences of the populations in the regions associated with the new trait.
- C) The extent of phenotypic variation of the new trait within each population.
- D) The environmental conditions experienced by each population over time.
53 Which of the following questions is most relevant to understanding the Calvin cycle?
- A) How does chlorophyll capture light?
- B) How is ATP used in the formation of 3-carbon carbohydrates?
- C) How is NADP+ reduced to NADPH?
- D) How is ATP produced in chemiosmosis?
54 Based on the figure, which of the following conclusions is best supported by the data presented?
- A) The soil conditions in the moist region are too extreme for most plant growth.
- B) There is a linear relationship between the number of plant species and the soil condition in the dry region.
- C) There is a positive correlation between plant species diversity and soil condition in the moist region.
- D) Soil conditions are a better predictor of plant species diversity in the dry region than in the moist region.
55 H+ + HCO3- H2O + CO2 The equation above shows one of the reversible reactions that occur in blood. After exercise, an athlete’s blood pH has dropped below the normal level. How will normal blood pH be restored?
- A) An increase in O2 concentration in the plasma will lead to an increase in H+ concentration.
- B) An increase in temperature will lead to an increase in H+ concentration.
- C) An increase in sweating will lead to a decrease in OH- and H+ concentration.
- D) An increase in breathing rate will lead to a decrease in blood CO2 and H+ concentration.
56 A researcher is investigating the relationship between the existing species diversity in a community and the ability of an introduced nonnative species to destabilize the community. Which of the following graphs is most consistent with the claim that communities with high diversity are more resistant to change than are communities with low diversity?
- A) D)
- B)
- C)
- D)
57 Under which of the following conditions is the observed number of beetles per culture dish the greatest?
- A) T. confusum with parasite at 500 days
- B) T. confusum without parasite at 300 days
- C) T. castaneum with parasite at 100 days
- D) T. castaneum with parasite at 600 days
58 The data over the duration of the experiment provide the strongest support for which of the following conclusions regarding the effect of the parasite on Tribolium populations?
- A) T. confusum is adversely affected by the parasite, while T. castaneum is not.
- B) T. castaneum is adversely affected by the parasite, while T. confusum is not.
- C) Both T. confusum and T. castaneum are adversely affected by the parasite.
- D) Both T. confusum and T. castaneum show increased fitness in the presence of the parasite.
59 In Figure I, the difference between the two curves can best be attributed to which of the following?
- A) The difference between controlled laboratory conditions and the natural environment.
- B) The effect of the host on its parasite.
- C) The influence of competition for limited resources.
- D) The natural variation among populations.
60 If the experiment was continued for an additional 500 days, the population density of T. castaneum with the parasite would most likely stabilize at a value closest to which of the following?
- A) 5 beetles/culture dish
- B) 10 beetles/culture dish
- C) 20 beetles/culture dish
- D) 25 beetles/culture dish