biochemistry testing may reveal high concentrations of an enzyme called creatine phosphokinase (cpk).

How would the previous sentence be correctly capitalized?
Answer: Biochemistry testing may reveal high concentrations of an enzyme called creatine phosphokinase (CPK).
situated at an altitude of 3,416 m (11,207 ft) in a broad valley of the andes, it is the busy hub of a thickly populated agricultural region where sheep are raised and cereals and tobacco are grown.

How would the previous sentence be correctly capitalized?
Answer: Situated at an altitude of 3,416 m (11,207 ft) in a broad valley of the Andes, it is the busy hub of a thickly populated agricultural region where sheep are raised and cereals and tobacco are grown.
registration 19 march 2007 08:54

How would the previous sentence be correctly capitalized?
Answer: Registration 19 March 2007 08:54
the lecturer is of course welcome to bring illustrative physical material.

How would the previous sentence be correctly capitalized?
Answer: The lecturer is of course welcome to bring illustrative physical material.