The number of individuals occupying a unit of habitat (volume or area) is the ___________.
A. distribution
B. carrying capacity
C. population density
D. population size
E. birth rate
Answer: C
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Two main symbionts of termites are ________ and ________
A) archaea / bacteria B) bacteria / fungi C) bacteria / protists D) fungi / protists
The most widely accepted and supported model that explains the movement of phloem sap in flowering plants is the
____ mechanism.
a. cohesion-tension b. translocation c. pressure flow
d. osmosis e. transpiration
During contraction,
a. cross-bridges of muscle filaments are broken and reformed. b. ATP is used to break cross-bridges. c. muscle cells use glucose derived from glycogen as an energy source. d. glycogen depletion may lead to muscle fatigue. e. all of these occur.
What property of water is not attributable to hydrogen bonding between water molecules?
A. cohesion B. ice formation C. polarity D. heat storage