Many cell functions involve communication between cells via molecular signals that must be sent from one cell to be received by a target cell. Suppose the signal to be sent is a small protein. Where would you expect to find the protein in the Golgi?
A) It would be an integral membrane protein with its functional domain on the cytoplasmic side of the membrane.
B) It would be an integral membrane protein with its functional domain on the lumen side of the membrane.
C) It would be on the exterior of the Golgi.
D) It would be in the lumen of the Golgi.
Ans: D) It would be in the lumen of the Golgi.
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A) is a major contributor to heart attacks B) would block conductance between the bundle branches and the Purkinje fibers C) would have a negative effect on peripheral resistance D) would disrupt the rate and timing of cardiac muscle contractions E) would have a direct effect on blood pressure monitors in the aorta
You're describing a newly discovered protozoa that has long filamentous pseudopods. Which term best fits these pseudopods?
A. Filopods B. Lobopods C. Reticulopods D. Hyphopods
Uracil will pair with
a. ribose. b. adenine. c. cytosine. d. thymine. e. guanine.
Which of the following statements is false?
a. The information that travels along the neural membrane is little more than a transient change in the membrane potential. b. A neuron is never really at rest but must expend energy to keep the membrane potential constant even when no impulse is being transmitted. c. During the short time an action potential occurs, the cytoplasmic side of the membrane becomes positive with respect to the outside. d. Only nerve cells can exhibit depolarization events. e. Action potentials are not directly transferred from neuron to neuron.