The oxidation of ________ occurs both biotically and abiotically; however, at ________ pH values biotic oxidation is more common
A) Si / low
B) ammonia / high
C) Fe2+ / low
D) Hgo / low
Answer: C
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Life is thought to have evolved from complex molecules formed by the interaction of smaller molecules in oceans and the atmosphere. The substance which brought these molecules together to interact is
A. buffers. B. acids. C. water. D. salts. E. hydrogen.
How would the presence of endospores in Louis Pasteur's nutrient solutions have affected his conclusions about spontaneous generation?
What will be an ideal response?
In the glomerulus, blood is filtered under pressure through a filtration barrier made up of (select all correct choices):
A. capillary endothelial cells. B. a basal lamina. C. a layer of podocytes. D. renal corpuscles. E. loops of Henle.
Rice and its grain relatives, maize, barley, and wheat, diverged from a common ancestor 50 million years ago. However, the chromosomes of these plants demonstrate extensive conserved arrangements of segments. This phenomenon is called
A. expressed sequence equilibrium. B. contig. C. synteny. D. single nucleotide polymorphisms. E. linkage disequilibrium.