When a finger or other appendage is severed in an accident, it is possible to surgically rejoin most tissues (bone, skin, etc.), which will then grow and heal. However, a cut through an appendage nerve is currently very difficult to reconnect. What structures are severed when the nerves in an appendage are severed?
A. axons
B. interneurons
C. cell bodies
D. synapses
E. dendrites
Answer: A
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Viruses mutate, and some viruses have not been discovered.
Answer the following statement true (T) or false (F)
A polymerization reaction is made irreversible by:
A. hybridization of a free nucleotide to a template B. breaking of the bond between the 2' carbon and the hydroxyl group C. creation of a phosphodiester bond D. hydrolysis of a pyrophosphate group into two inorganic phosphates E. entry of a free nucleotide into an RNA polymerase
Hemophilia is an X-linked trait caused by the allele h. About 1 in 10,000 males (.0001) has
hemophilia. The frequency of h, therefore, is ____________________. Fill in the blank(s) with the appropriate word(s).
The process by which Pneumococcus transfers DNA between living type RII and heat-killed type SIII cells is known as __________
A) transformation B) replication C) transduction D) ligation E) conjugation