- A) Amount of sunlight (hours/day)
- B) Mean temperature (°C)
- C) Density of rose pollen produced (g/m²)
- D) Amount of pollen produced by each flower (g/flower)
Microbiology MCQ
Total MCQ: 174
MCQ Quiz on Microbiology
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Sourav
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Questions: 20
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Questions: 10
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Vesnce
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Hector
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Questions: 10
62 What is the main way in which the cells of the leaves of the small evergreen trees differ from the cells of the leaves of the large trees?
- A) The cells of the leaves of the small evergreen trees have larger vacuoles.
- B) The cells of the leaves of the small evergreen trees have thicker cell walls.
- C) The cells of the leaves of the small evergreen trees have a greater number of chloroplasts.
- D) The cells of the leaves of the small evergreen trees have more mitochondria.
63 If ATP breakdown (hydrolysis) is inhibited, which of the following types of movement across cell membranes is also inhibited?
- A) Movement of oxygen into a cell
- B) Movement of water through aquaporins
- C) Passage of a solute against its concentration gradient
- D) Facilitated diffusion of a permeable substance
64 Which of the following statements provides the best explanation for the main trend shown in the graph above?
- A) The pigment concentration in leaves is not affected by light exposure.
- B) Leaf growth is positively correlated with pigment concentration.
- C) Pigment concentration is inversely correlated with light exposure.
- D) Leaf growth increases linearly with increased pigment concentration.
65 Undersea landslides can disrupt marine habitats by burying organisms that live on the ocean floor. The graph above shows the size of a population of a certain organism that lives on the ocean floor. The population was affected by a recent landslide at the time indicated on the graph. Which of the following best predicts how the population will be affected by the landslide?
- 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.
66 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.
67 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?
68 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.
69 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.
70 Mycobacterium leprae was discovered by
- A) Robert Koch
- B) Hansen
- C) Edward Jenner
- D) Louis Pasteur