An ion channel in a cell membrane is modeled as a cylindrical opening in the membrane. Because the ion concentration outside the cell is larger than that inside the cell, there is a net flux of ions from outside to inside. If the diameter of the cylindrical opening is doubled, the number of ions per time passing into the cell is: unchanged halved quadrupled doubled quartered
An ion channel in a cell membrane is modeled as a cylindrical opening in the membrane. Because the ion concentration outside the cell is larger than that inside the cell, there is a net flux of ions from outside to inside. If the diameter of the cylindrical opening is doubled, the number of ions per time passing into the cell is: unchanged halved quadrupled doubled quartered
College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Introduction
Section: Chapter Questions
Problem 54AP
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![Question 2
An ion channel in a cell membrane is modeled as a cylindrical opening in the membrane. Because the
ion concentration outside the cell is larger than that inside the cell, there is a net flux of ions from
outside to inside. If the diameter of the cylindrical opening is doubled, the number of ions per time
passing into the cell is:
O unchanged
O halved
quadrupled
doubled
O quartered
Question 4
Initially at rest, a gazelle accelerates at a constant rate, moving in a straight line. After 10 seconds it
achieves a speed of 25 m/s. How far did the gazelle travel?
250 m
O 125 m
62.5 m
O 500 m
not enough information to determine](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9dfbd182-6678-4243-a589-77ad279d0f4d%2Fe8898c01-3e60-44c0-bcb1-7ddfd3773351%2Flacnk3m_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question 2
An ion channel in a cell membrane is modeled as a cylindrical opening in the membrane. Because the
ion concentration outside the cell is larger than that inside the cell, there is a net flux of ions from
outside to inside. If the diameter of the cylindrical opening is doubled, the number of ions per time
passing into the cell is:
O unchanged
O halved
quadrupled
doubled
O quartered
Question 4
Initially at rest, a gazelle accelerates at a constant rate, moving in a straight line. After 10 seconds it
achieves a speed of 25 m/s. How far did the gazelle travel?
250 m
O 125 m
62.5 m
O 500 m
not enough information to determine
![Question 5
You are observing a microbead (with mass 10 µg) undergoing random motion in a glycerin solution.
The microbead has an initial velocity of 10 um/s (micrometers per second) along the x-axis.
Suddenly its velocity changes to -5 µm/s, still along the x-axis. What was the impulse experienced
by the microbead in units of µg-um/s?
O -100
O +150
+100
-150
-50](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9dfbd182-6678-4243-a589-77ad279d0f4d%2Fe8898c01-3e60-44c0-bcb1-7ddfd3773351%2F9qbbfdu_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question 5
You are observing a microbead (with mass 10 µg) undergoing random motion in a glycerin solution.
The microbead has an initial velocity of 10 um/s (micrometers per second) along the x-axis.
Suddenly its velocity changes to -5 µm/s, still along the x-axis. What was the impulse experienced
by the microbead in units of µg-um/s?
O -100
O +150
+100
-150
-50
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