100% COMPLETE SOLUTIONS| LATEST
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Based on the information provided in the
passage, which of the following best describes
the effect of harmful algal blooms on otter
populations? - correct answer-They are a density-independent factor that
negatively affects the otter population
regardless of its size
As otters were removed during the hunting
years, there was a large decrease in the catches
of fish species from the eelgrass habitats. Which
of the following best explains why this decrease
happened? - correct answer-Otters are a keystone species, so their
disappearance from the area resulted in
the collapse of an entire community
Climate change could affect the ecosystem of
the Elkhorn Slough in many ways. From the
information provided, which of the following
predictions about the direct, local effects of
climate change is most likely? - correct answer-Ocean warming will favor population
growth of nonnative species as their
habitats shift northward
Based on the information, an increase in the sea
slug population would most likely be directly
related to which of the following? - correct answer-A decrease in the crab population
Many fish species, such as fathead minnows,
release a pheromone when their skin cells are
damaged. Researchers placed pike, a predator of
fathead minnows, in a choice chamber and
released the minnow pheromone at one end of
the chamber. The researchers observed that the
pike oriented themselves toward the end of the
chamber where the pheromone was released.
, Which of the following questions will best guide
a follow-up investigation about the role of
pheromones in locating prey? - correct answer-How do pike determine that the fathead
minnow pheromone is present in the
water?
Which of the following best explains why a
cell's plasma membrane is composed of two
layers of phospholipids rather than just a single
layer? - correct answer-Having two oppositely oriented layers of
phospholipids allows only the hydrophilic
heads to interact with water inside and
outside of the cell
Based on the data, which type of cell would be
best suited for the lining the alveoli of the lungs,
where diffusion of carbon dioxide and oxygen
must occur very rapidly? - correct answer-Simple squamous cells
Which of the following best explains how the
extensive folding of the inner mitochondrial
membrane benefits a eukaryotic cell? - correct answer-It increases the area available
for proteins
involved in energy transfer
Some green sea turtle females deposit their eggs
in nests that are dug on warm, tropical beaches.
Researchers have studied the effects of
temperature on the hatching rate and the
proportion of female to male hatchlings
produced at different average nest temperatures
in Suriname (Figure 1). At temperatures below
23°C or above 33°C, the eggs do not develop.
Which of the following best describes the results
shown in Figure 1 ? - correct answer-Warmer nests produce more female sea
turtles than do cooler nests
Which of the following describes a scenario that
would result in the phenotypic change shown in
the graph? - correct answer-House sparrows that lay
smaller-than-average clutches of eggs