Step 3 of the citric acid cycle involves the conversion of isocitrate to a-ketoglutarate. What is the intermediate species formed in this step?
A) fumarate
B) oxaloacetate
C) oxalosuccinate
D) succinate
C
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The moment magnitude is more accurate than the classical Richter scale because it is tied directly to physical parameters such as fault-rupture area, fault slip, and energy release, and because other earthquake scales use indirect measures such as how much a seismograph needle moves.
Answer the following statement true (T) or false (F)
Which ions—positive ions or negative ions—tend to be larger and why?
A) Positive ions because they have more protons B) Positive ions because they have more electrons C) Negative ions because they have more neutrons D) Negative ions because they have more electrons
The strongest criticism of suburbs argued that historically
A) low-income people and minorities are unable to live in some areas because of the high cost of the housing, the unfriendliness (or discrimination) of established residents, and fears that property values would decline if minorities were allowed to buy property there. B) low-income people and minorities are able to live in some areas because of the low cost of the housing, the friendliness of established residents, and the myth that property values would decline if minorities were allowed to buy property there. C) legal devices, such as requiring several small houses to sit on a large lot of land amid several different apartments, prevented low-income families from living in many suburbs. D) low-income people and minorities are unable to live in some areas because of the high cost of the private schools there, the unfriendliness of African American and Hispanic minorities there, and the fear that property values would not change if other minorities were allowed to buy property there. E) they encouraged the buying and selling of too many automobiles.
Methane is naturally produced by bacteria in ________ environments
A) isotopic B) very cold C) high pressure D) anaerobic