During action potential conduction along a myelinated axon, the action potential appears to jump from ____
a. synapse to synapse
b. node to node
c. dendrite to axon
d. axon to dendrite
e. inside to outside
ANSWER: b
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Which of the following characteristics of protein degradation in eukaryotic cells is not true of protein degradation in bacterial cells?
A. Proteins with an Arg residue at their N-termini have short half-lives. B. Proteins are degraded by a large, barrel-shaped protease. C. Proteolysis is ATP dependent in regulated protein degradation. D. Protein degradation is directed by the covalent attachment of ubiquitin.
The perception of a certain pitch of sound depends partly on which of the following?
A. the amplitude of the sound waves B. which bones of the middle ear are moved C. which hair cells of the cochlea are stimulated D. where particles settle in the semicircular canals E. whether it is the round window or oval window that vibrates
Based on DNA sequences of single genes, genomic analysis has confirmed that prokaryotes are divided into two great lineages: the Bacteria and the Archaea. The latter may be more closely related to the Eukarya
Recount the lines of evidence that support these findings.
Describe the steps associated with the scientific method.
What will be an ideal response?