Circle the phrase in each pair that is likely to occur more rapidly in response to an extracellular signal
A. changes in cell secretion / increased cell division
B. changes in protein phosphorylation / changes in proteins being synthesized
C. changes in mRNA levels / changes in membrane potential
A. changes in cell secretion
B. changes in protein phosphorylation
C. changes in membrane potential
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Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What will be an ideal response?
While running on a treadmill, your heart rate will increase and your breathing will be deeper and more
rapid. Among other things, this helps ensure that your muscles get adequate supplies of O2 as you exercise. These changes are the result of _____.
a. compensatory mechanisms b. developmental mechanisms c. emergent properties d. homeostatic mechanisms e. multicellularity
Sodium has one valence electron in its third energy level. To reach a stable energy configuration,
sodium will tend to
a. take up an electron from another atom. b. move its valence electron to the second energy shell. c. give up an electron to another atom. d. share its valence electron with another atom. e. move an electron from the second energy level to the valence shell.
Four of the five choices listed below are members
of the same group. Select the exception. a. archaeans b. amoebozoans c. diatoms d. dinoflagellates e. euglenoids