Four of the five choices listed below are parts of the
ecosystem. Select the exception.
a. energy
b. raw materials and nutrients
c. decomposers
d. producers
e. consumers
Answer: a
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A billionaire buys a sterile volcanic island that recently emerged from the sea. To speed the arrival of conditions necessary for plant growth, the billionaire might be advised to aerially sow what over the island?
A) basidiospores B) spores of ectomycorrhizae C) soredia D) yeasts E) leaves (as food for fungus-farming ants)
Which of the following is NOT a condition of the Hardy-Weinberg equilibrium?
A. No differences in the survival and reproductive success of individuals B. No migration C. No mutation D. Random mating E. All of the conditions listed ARE conditions of the Hardy-Weinberg equilibrium.
Based on the temperature range and precipitation, which area in Figure 56-1 is dominated by pine
trees? a. 3 b. 4 c. 5 d. 6 e. 7
How can the same first messenger evoke different responses in different target cells?
a) it depends on the tissue cAMP binds to b) it depends on the specific proteins phosphorylated by PKA c) none of the choices is correct d) it depends on the ligand cAMP binds to