Fairy shrimp are filter feeders that obtain organic particles from the water or scrape algae
from surfaces. Species that are found in deserts tend to have very drought-resistant eggs that
can remain dormant for many months. They are an important food source for both birds and
fishes. This description describes the organism’s __________.
a. niche
b. life zone
c. habitat
d. population
A
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Until the discovery of ________, enzymes were the only recognized biological molecules that were catalytic.
Fill in the blank(s) with the appropriate word(s).
Which layer of the extracellular matrix of a plant provides the greatest strength?
A. the middle lamella B. the primary cell wall C. the secondary cell wall D. the plasma membrane
The reservoir of Treponema pallidum is the
A. guinea pig. B. fox. C. bat. D. human.
If you drop a rubber ball, it doesn't bounce back to the height you dropped it from. This is consistent with
A. the second law of thermodynamics. B. the first law of thermodynamics. C. conversion of kinetic energy into potential energy. D. conversion of kinetic energy into entropy. E. conversion of entropy into potential energy.