Where does the copper used for wiring and plumbing come from?
a. Most copper is found in ocean sediments.
b. Most copper is mined from the ground.
c. Most copper is found along riverbanks.
d. All copper is mined from the surface.
e. All copper is manufactured synthetically in factories.
ANSWER: b
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The sequence and actions of genes controlling development of the anterior-posterior axis of Drosophila illustrate (Select all correct choices):
A. hierarchical control of gene regulation during development. B. maternal developmental effect. C. that genes controlling development are turned on in groups, with each group acting to refine and narrow the pattern of differentiation generated by previous groups. D. that genes controlling development are turned on in sequence, with each set acting on a different set of cells to specify the cells' ultimate fates.
Which of the following types of plants form symbioses with cyanobacteria (thus allowing them access to usable forms of nitrogen)? Select all correct choices
A. mosses B. aquatic ferns C. eudicots D. cycads
Specific heat or thermal capacity is an important property of water because it: a. makes ocean temperatures relatively stable
b. allowed for the evolution of mechanisms to deal with heat fluctuations. c. all of these choices. d. is the same for all liquids.
Which of the following statements is false?
a. Heat loss represents a one-way loss of energy from an ecosystem. b. Organisms in the food chain are able to utilize all the energy contained in the food that they eat. c. In some ecosystems, the majority of the energy stored in plants does not become available until the plants die. d. Heat and energy are lost by each organism in the ecosystem. e. The two food webs are classified as grazing and detrital.