What is production efficiency?
A. The rate of photosynthetic fixation as a function of temperature.
B. The percentage of energy assimilated by an organism that becomes new biomass.
C. The amount of energy used by organisms at every node of a food web.
D. Consumption of primary production by the second and third levels of a food web.
E. The net energy gain to an ecosystem based on photosynthetic production.
B. The percentage of energy assimilated by an organism that becomes new biomass.
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Tony sometimes seems very "wound up." At those times, he seems full of energy, talks very rapidly, and makes very grandiose plans. (One time, he gave away all of his belongings and was planning to move to Washington, D.C., so he could advise the President.) At these times, he also seems to need almost no sleep. During other periods of time Tony seems very "down." During these times he does not take care of himself. He seems to want to sleep all the time, and he often makes thinly veiled references to wanting to commit suicide.
a. Schizophrenia b. Major Depression c. Dissociative Identity d. Bipolar Disorder e. none of the above
How many proteins are present in the extract from the individual that is homozygous recessive?
a. 6 b. 7 c. 8 d. 9
Lignin is a polymer composed of monomers derived from amino acids
____________________ Indicate whether the statement is true or false.
Which statement regarding the differences between electron microscopy and light microscopy is false?
a. Images produced by electron microscopes are always black and white. b. The higher resolution of electron microscopes is due to the fact that the wavelength by electrons is about one hundred thousand (1 x 105) times longer than the wavelength of visible light. c. Viruses and other objects smaller than about 200 nm (0.2 µm) must be examined via electron microscopy. d. Instead of using glass lenses, an electron microscope uses electromagnetic lenses.