MSCI 520_ Principles of Physiology I Quiz Cellular
Physiology 2025 |scored 49 out of 50 Liberty University
Online Academy
Due Jun 29 at
11:59pm Points 50
Questions 50
Time Limit 100 Minutes
Instructions
The quiz:
Covers the Learn material from Module 1:
Week 1. Contains 50 multiple-choice questions.
Is limited to 100
minutes. Allows 1
attempt.
Is worth 50 points.
Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 1: Week 1.
Attempt History
Attempt Time Score
LATEST Attempt 1 86 minutes 49 out of 50
Correct answers are hidden.
Score for this quiz: 49 out of
50 Submitted Jun 29 at
9:28am This attempt took
86 minutes. Question 1
pts
The transporter for glucose in the renal proximal tubule recognizes and transports the natural
isomer d -glucose, but it does not recognize or transport the unnatural isomer l -glucose.What
feature of carrier-mediated transport does this describe?
Saturation
Stereospecificity
Competition
Question 2
pts
This term describes two solutions with an equal amount of osmotically active particles is;
Isosmotic
Hyperosmotic
Isotonic
None of these
Question 3
pts
It is a large molecular weight protein that extends from the M lines to the Z disks and is associated
,with thick filaments.Which skeletal muscle protein does this describe?
Tropomyosin
Troponin T
Titin
Dystrophin
α-actinin
, Question 4
pts
Which enzyme in the presynaptic knob is responsible for the synthesis of acetylcholine?
Acetylcholinesterase
Choline
acetyltransferase
Monoamine oxidase
Acetylcholine synthase
Question 5
pts
Which of these statements describes a physiologic significance of the differences in the
composition of the ICF and the ECF?
The difference in [K+] determines the resting membrane potential of nerve and
muscle tissues The upstroke of the action potential depends the [Na+] difference
Absorption of nutrients like glucose is dependent on the transmembrane
concentration of Na+ All of these
Question 6
pts
Which of the following neurotransmitters would be inactivated by peptidases:
Vasopressin
Glycine
Glutamate
Norepinephrine
Question 7
pts
At rest, its function is to block the myosin-binding sites on actin. Which skeletal muscle protein
does this describe?
Tropomyosin
Troponin T
Titin
Dystrophin
α-actinin
Question 8
pts
Which of these describes the physiologic significance the Na+/K+ ATPase?
It maintains the ionic gradient for Na + across the cell membrane needed for the upstroke of the action
potential
It helps in maintaining the concentration gradient for K + across the cell membrane, which then is responsible f
the K + diffusion potential that drives the membrane potential toward the K + equilibrium potential
It makes a small direct electrogenic contribution of the Na + -K + ATPase, which is based on the stoichiometry o
three Na + ions pumped out of the cell for every two K + ions pumped into the cell.
All of these
Physiology 2025 |scored 49 out of 50 Liberty University
Online Academy
Due Jun 29 at
11:59pm Points 50
Questions 50
Time Limit 100 Minutes
Instructions
The quiz:
Covers the Learn material from Module 1:
Week 1. Contains 50 multiple-choice questions.
Is limited to 100
minutes. Allows 1
attempt.
Is worth 50 points.
Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 1: Week 1.
Attempt History
Attempt Time Score
LATEST Attempt 1 86 minutes 49 out of 50
Correct answers are hidden.
Score for this quiz: 49 out of
50 Submitted Jun 29 at
9:28am This attempt took
86 minutes. Question 1
pts
The transporter for glucose in the renal proximal tubule recognizes and transports the natural
isomer d -glucose, but it does not recognize or transport the unnatural isomer l -glucose.What
feature of carrier-mediated transport does this describe?
Saturation
Stereospecificity
Competition
Question 2
pts
This term describes two solutions with an equal amount of osmotically active particles is;
Isosmotic
Hyperosmotic
Isotonic
None of these
Question 3
pts
It is a large molecular weight protein that extends from the M lines to the Z disks and is associated
,with thick filaments.Which skeletal muscle protein does this describe?
Tropomyosin
Troponin T
Titin
Dystrophin
α-actinin
, Question 4
pts
Which enzyme in the presynaptic knob is responsible for the synthesis of acetylcholine?
Acetylcholinesterase
Choline
acetyltransferase
Monoamine oxidase
Acetylcholine synthase
Question 5
pts
Which of these statements describes a physiologic significance of the differences in the
composition of the ICF and the ECF?
The difference in [K+] determines the resting membrane potential of nerve and
muscle tissues The upstroke of the action potential depends the [Na+] difference
Absorption of nutrients like glucose is dependent on the transmembrane
concentration of Na+ All of these
Question 6
pts
Which of the following neurotransmitters would be inactivated by peptidases:
Vasopressin
Glycine
Glutamate
Norepinephrine
Question 7
pts
At rest, its function is to block the myosin-binding sites on actin. Which skeletal muscle protein
does this describe?
Tropomyosin
Troponin T
Titin
Dystrophin
α-actinin
Question 8
pts
Which of these describes the physiologic significance the Na+/K+ ATPase?
It maintains the ionic gradient for Na + across the cell membrane needed for the upstroke of the action
potential
It helps in maintaining the concentration gradient for K + across the cell membrane, which then is responsible f
the K + diffusion potential that drives the membrane potential toward the K + equilibrium potential
It makes a small direct electrogenic contribution of the Na + -K + ATPase, which is based on the stoichiometry o
three Na + ions pumped out of the cell for every two K + ions pumped into the cell.
All of these
