Compare and contrast the production and transmission of a graded potential with those of an action potential. What will be an ideal response?
Both are alternations in the membrane that cause the membrane potential to vary from the
resting state. A graded potential is a local response that is characteristic of all cells and which
fades out within a few millimeters of its point of origin. It varies in magnitude depending on
the strength of the stimulus, and it can either be excitatory or inhibitory. An action potential
is generated only in neurons, muscle cells, and a few cells of the endocrine and immune
systems. An action potential is generated when the membrane reaches its threshold level, and
it is propagated at a constant rate and magnitude; that is, it does not vary with the strength of
the stimulus.
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Conjugation is useful for determining relatedness between bacteria at the species level because it never occurs between organisms of different genera.
Answer the following statement true (T) or false (F)
One application of modified flower parts has been the development of cultivated flowers from wild ones such as with:
A. petunias B. poinsettias C. apples D. roses E. oranges
Describe the process of mRNA splicing
What will be an ideal response?
The greater the number of links in a food chain, the higher the
A) species diversity. B) number of top predators. C) connectance. D) mean chain length.