Although communities tend toward equilibrium, their most common state is one of dynamic response to changing conditions.
a. true
b. false
Ans: a. true
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Which structure-function pair is mismatched?
A) nucleolus â€" production of ribosomal subunits B) lysosome â€" intracellular digestion C) ribosome â€" protein synthesis D) Golgi â€" protein trafficking E) microtubule â€" muscle contraction
A polymer coat consisting of a dense, well-defined polymer layer surrounding a cell is called a
A) capsule. B) glycocalyx. C) lipopolysaccharide. D) slime mold.
The green sulfur bacteria ________.
A. deposit granules outside the cell B. deposit granules within and outside the cell C. deposit granules within the cell D. do not deposit granules
What describes marsupial embryos?
A. They are nourished by the placenta. B. They hatch from an externally laid egg. C. They hatch from an internal egg. D. They are born fully developed. E. They are born highly underdeveloped.