Typical agricultural crops store how much of their absorbed solar energy in the form of biomass?
a. 0.1% to 0.5%
b. 1% to 5%
c. 10% to 50 %
d. 100%
e. 0.01% to 0.05%
A
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The development of acute rheumatic fever and subsequent valvular heart disease are problems that may be encountered by patients infected with:
a. Enterococcus faecalis. b. S. pneumoniae. c. S. pyogenes. d. S. agalactiae.
What is the term for learning that occurs only during a brief period early in life and results in a behavior that is difficult to modify.
A. imprinting B. filial imprinting C. innate behavior D. instinct E. operant conditioning
During cellular respiration, NADH
A) is chemically converted into ATP. B) is reduced to form NAD+. C) delivers its electron load to the first electron carrier molecule. D) is the final electron acceptor.
Which statement is TRUE?
A. Myelin is a glycoprotein matrix, secreted by myelinating cells to speed nerve conduction. B. Oligodendrocytes myelinate PNS axons. C. Oligodendrocytes produce scar tissue upon corresponding axonal damage, preventing regrowth of the axon. D. Schwann cells myelinate CNS axons. E. Wallerian degeneration describes the CNS axon breakdown that may still enable regrowth and restoration of function.