You are exploring a distant planet and find an interesting ecosystem in a lake of liquid methane. Tiny organisms, which you decide to call "quiddles", are able to use the methane to produce carbon sugars. Other organisms, which you call "widdles", consume the quiddles. You do some basic sampling and discover that an average widdle is twice as large as an average quiddle, but there are many more quiddles than widdles per square meter of the methane lake. You draw up the three types of ecological pyramids for the methane lake and send them via WarpSpeed Mail to the other members of the research team back on Earth. What types of pyramids will they find when they open the package? Check all that apply.
A. An inverted pyramid of energy
B. An inverted pyramid of numbers
C. A standard pyramid of energy
D. A standard pyramid of biomass
E. An inverted pyramid of biomass
F. A standard pyramid of numbers
Answer: F
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The type strain is the most representative strain of a particular species.
Answer the following statement true (T) or false (F)
Similar to the tundra, but without a permanent ice layer, this biome is characterized by low and slow-growing plants with little protection from UV radiation
A. taiga B. alpine C. chaparral D. deciduous forest E. rain forest
Synthesizing a single glucose molecule requires the amount of energy stored in 54 ATP molecules, but when that glucose molecule is broken down, only enough energy to produce 36 to 38 ATP molecules is released. What happened to the remaining energy?
a. The extra energy is stored as adenosine diphosphate. b. Glucose molecules are never completely broken down. c. Some energy from metabolism is released as heat. d. Enzymes involved in this reaction absorb the extra energy.
Temporal isolation is an example of
A) neither a premating nor a postmating isolation mechanism. B) a premating isolating mechanism. C) both a premating and a postmating isolation mechanism. D) a postmating isolating mechanism.