Where is the receptor for a nonpolar, lipid-soluble regulatory molecule?
A. Embedded in the inner surface of the plasma membrane
B. In the cytoplasm or nucleus of the cell
C. Embedded in the outer surface of the plasma membrane
D. All of the choices are correct.
Answer: B
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During cellular respiration, decarboxylation occurs when
A. a carbon atom is removed from glucose. B. a carbon dioxide molecule is removed from the cytosol. C. a carboxyl group is released from pyruvate. D. a carbon atom is removed from and an oxygen atom is added to fructose. E. all carbon and oxygen atoms are released from a high-energy molecule.
The chemical cochicine, from a flowering plant, blocks the building of tubulin proteins into microtubules. This would cause cell damage by
A) reducing the production of ATP that the cell can make. B) blocking cell division. C) reducing cell transport. D) inhibiting DNA replication. E) inhibiting lipid production.
Which of the following bones forms the upper jaw?
A. Maxilla B. Palatine C. Lacrimal D. Mandible
Assume in a laboratory you were able to isolate a neuron and remove the Acetylcholine receptors from the postsynaptic membrane. The substance ______ would no longer cause facilitation of this neuron
Fill in the blank(s) with the appropriate word(s).