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Admission Tests GRE Exam Syllabus Topics:

Admission Tests GRE General Test Sample Questions:

1.
In Country P the percent spent on outdoor advertising in 2012 was one-half of the corresponding percent spent in 2013. Which of the following is closest to the amount spent on outdoor advertising in Country P in 2012 ?

A) $36 million
B) $38 million
C) $IS million
D) $37 million
E) $19 million

2. A large cube and a small cube are made of granite of uniform density- The large cube has edges of length 1.2 meters and weighs 4.752 kilograms. If the small cube has edges of length 10 centimeters, what is the weight, in grains, of the small cube?

A) 2.750
B) 3.960
C) 396
D) 570
E) 275

3. Recent research has questioned the long-standing view of pearly mussels as exclusively suspension feeders (animals that strain suspended particles from water) that subsist on phytoplankton (mostly algae). Early studies of mussel feeding were based on analyses of gut contents, a method that has three weaknesses. First, material in mucus-bound gut contents is difficult to identify and quantify. Second, material found in the gut may pass undigested out of the mussel, not contributing to its nutrition. Finally, examination of gut contents offers limited insight into the mechanisms and behaviors by which mussels acquire food. Modem studies suggest that pearly mussels feed on more than just algae and may use other means than suspension feeding. Pedal feeding (sweeping up edible material with a muscular structure called the foot) has been observed in juvenile pearly mussels.
Besides the phytoplankton pearly mussels capture from the water column, their guts also contain small animals, protozoans, and detritus (nonliving particulate organic material). Recent studies show that mussels can capture and assimilate bacteria as well, a potentially important source of food in many fresh waters.
Another potential source of food for mussels is dissolved organic matter. Early studies showing that pearly mussels could take up simple organic compounds were largely discounted because such labile (unstable) compounds are rarely abundant in nature. Nevertheless, recent work on other bivalves suggests that dissolved organic matter may be a significant source of nutrition.
Of this complex mix of materials that pearly mussels acquire, what is actually required and assimilated?
Stable-isotope analyses of mussels taken from nature and of captive-reared mussels are beginning to offer some insight into this question. Nichols and Garling showed that pearly mussels in a small river were omnivorous, subsisting mainly on particles less than 2S micrometers in diameter, including algae, detritus, and bacteria. Bacterially derived carbon was apparently the primary source of soft-tissue carbon. However, bacteria alone cannot support mussel growth, because they lack the necessary long-chain fatty acids and sterols and are deficient in some amino acids. Bacteria may supplement other food resources, provide growth factors, or be the primary food In habitats such as headwater streams, where phytoplankton is scarce. Juvenile mussels have been most successfully reared m the laboratory on diets containing algae high in polyunsaturated fatty acids. Thus, it appears that the pearly mussel diet in nature may consist of algae, bacteria, detritus, and small animals and that at least some algae and bacteria may be required as a source of essential biochemicals.
The primary purpose of the passage is to

A) suggest that a particular source of nutrients is more essential to pearly mussels than was previously thought
B) explain why evidence used to support a long-standing view about pearly mussels is flawed
C) summarize the present state of knowledge about what pearly mussels eat
D) contrast two mechanisms by which pearly mussels have been shown lo feed
E) question whether research findings about laboratory-reared pearly mussels can be extrapolated to pearly mussels in natural habitats

4. Carbon dating of charcoal gathered from a Nok iron smelter at Intime. Nigeria, suggests that iron technology was established there by 410 B.C. This may not be the oldest smelter in sub-Saharan Africa, however.
Archaeologists have located evidence of iron-smelting in the Termite Hills of Niger from as early as 1400 B.C.. but skeptics say the wood used for that dating could have already been centuries old when burned as fuel-a problem that dogs carbon dating, especially in arid places like Niger, where wood desiccates and lasts longer. Of course, the same problem could distort dates for the Intime furnace as well, but here there is an important piece of corroborating evidence: Nok pottery found inside the furnace alongside the charcoal.
The author implies which of the following about the "Nok pottery found inside the furnace"?

A) It provides independent support for the results of the carbon dating of the charcoal.
B) It indicates that the furnace was used primarily for purposes other than smelting.
C) It predates the pottery found in the Termit Mills of Niger.
D) It was probably imported to Intini from a less arid climate.
E) It contains traces of iron smelted in the same furnace.

5. Until 1992. microprocessor types were identified by number, and for a long time they were considered so
_________that manufacturers would share design specifications for them.

A) inimitable
B) interchangeable
C) perishable
D) essential
E) integral
F) fungible

Solutions: