MSCI660 Principles of Cellular Biology Quiz: Membrane
Transport and Cell Compartmentalization/Protein Sorting
Liberty University Online Academy
Compartmentalization/Protein Sorting
Due Apr 14 at 11:59pm
Points 125
Questions 50
Time Limit 75 Minutes
Instructions
The quiz:
Covers the Learn material from Module 3: Week 3 – Module 4: Week 4.
Contains 50 multiple-choice questions.
Is limited to 75 minutes.
Allows 1 attempt.
Is worth 125 points.
Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 4: Week 4.
Attempt History
Attempt Time Score
LATEST Attempt 1 64 minutes 120 out of 125
Correct answers are hidden.
Score for this quiz: 120 out of 125
Submitted Apr 9 at 6:29pm
This attempt took 64 minutes.
Question 1
2..5 pts
Compared to the cytosol, which of the following is generally true about the lumen of the endoplasmic
reticulum in our cells?
It has a higher pH.
It has a more reducing environment.
It has a much higher calcium ion concentration.
,It has a higher density of ribosomes.
All of the above.
,
Question 2
2..5 pts
The permeability of a protein-free lipid bilayer to various molecules depends on their properties. Sort
the following in order of low to high permeability from left to right. Your answer would be a six-letter
string composed of letters A-F, e.g. ABCDEF.
(A) O2
(B) ATP
(C) RNA oligonucleotide
(D) Na+
(E) Glucose
(F) Urea
CFBDEA
CBDEFA
DEBCAF
DECAFB
BCDEAF
Question 3
2..5 pts
In contrast to transporters, the channel proteins in cellular membranes …
interact strongly with the solute(s) that they transport.
undergo a conformational change every time they transport a solute.
can only mediate passive transport.
form pores that are always open.
Question 4
2..5 pts
The following diagram depicts the topology of a multipass transmembrane protein in the endoplasmic
reticulum (ER) membrane. Which set of helices act as stop-transfer signals in this
Transport and Cell Compartmentalization/Protein Sorting
Liberty University Online Academy
Compartmentalization/Protein Sorting
Due Apr 14 at 11:59pm
Points 125
Questions 50
Time Limit 75 Minutes
Instructions
The quiz:
Covers the Learn material from Module 3: Week 3 – Module 4: Week 4.
Contains 50 multiple-choice questions.
Is limited to 75 minutes.
Allows 1 attempt.
Is worth 125 points.
Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 4: Week 4.
Attempt History
Attempt Time Score
LATEST Attempt 1 64 minutes 120 out of 125
Correct answers are hidden.
Score for this quiz: 120 out of 125
Submitted Apr 9 at 6:29pm
This attempt took 64 minutes.
Question 1
2..5 pts
Compared to the cytosol, which of the following is generally true about the lumen of the endoplasmic
reticulum in our cells?
It has a higher pH.
It has a more reducing environment.
It has a much higher calcium ion concentration.
,It has a higher density of ribosomes.
All of the above.
,
Question 2
2..5 pts
The permeability of a protein-free lipid bilayer to various molecules depends on their properties. Sort
the following in order of low to high permeability from left to right. Your answer would be a six-letter
string composed of letters A-F, e.g. ABCDEF.
(A) O2
(B) ATP
(C) RNA oligonucleotide
(D) Na+
(E) Glucose
(F) Urea
CFBDEA
CBDEFA
DEBCAF
DECAFB
BCDEAF
Question 3
2..5 pts
In contrast to transporters, the channel proteins in cellular membranes …
interact strongly with the solute(s) that they transport.
undergo a conformational change every time they transport a solute.
can only mediate passive transport.
form pores that are always open.
Question 4
2..5 pts
The following diagram depicts the topology of a multipass transmembrane protein in the endoplasmic
reticulum (ER) membrane. Which set of helices act as stop-transfer signals in this
