In a method called patch-clamping, a glass capillary can be converted into a microelectrode that measures the electrical currents across biological membranes. Which of the following is not true about the patch-clamp method?
(a) The glass capillary adheres to a "patch" of membrane through the application of suction.
(b) The aperture in the glass capillary used to make a microelectrode is about 1 ?m in diameter.
(c) If the experimental conditions are held constant, fluctuations in electrical currents across the patch of membrane are still observed.
(d) Single-channel patch-clamp recordings have demonstrated that gated membrane channels will only open and close in response to specific stimuli.
Ion Channels and Signaling in Nerve Cells
(d)
You might also like to view...
Use Figure 50-4 to predict on which day of a 28-day menstrual cycle estrogen levels would peak
a. 10
b. 12
c. 14
d. 18
e. 22
Replication of the bacterial ________ is required before the bacterial cell can be duplicated
A) mitochondria B) nucleus C) chromosome D) gamete
The protists make up an inadequately defined and poorly organized group that biologists will likely reorganize
Indicate whether the statement is true or false
Choose the correct sequence of events involving allopolyploidy that gave rise to modern tobacco.
A. duplicate gene loss, hybridization, chromosome doubling B. hybridization, duplicate gene loss, chromosome doubling C. hybridization, chromosome doubling, duplicate gene loss D. chromosome doubling, hybridization, duplicate gene loss