5003 Biology Midterm Assessment Exam with Correct Answers Solved by Expert-
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What causes the rapid change in the resting membranepotential to initiate an action potential?
Question 1 options:
Potassium gates open and potassium rushes into the cell, changing the membrane potential from negativeto positive
Sodium gates open and sodium rushes into the cell, changing the membrane potential from negative topositive.
Sodium gates close, allowing potassium into the cell to change the membrane potential from positive tonegative.
Potassium gates close, allowing sodium into the cell to change the membrane potential from positive tonegative.
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Question 2 (5 points)
What is a consequence of leakage of lysosomal enzymes during chemic
injury?
Question 2 options:
Enzymatic digestion of the nucleus and nucleolus occurs, halting deoxyribonucleic acid (DNA) synthesis.
Influx of potassium ions into the mitochondria occurs, halting the adenosine triphosphate (ATP)production.
Edema of the Golgi body occurs, preventing the transport of proteins out of the cell. Shift of calcium out of the plas
membrane occurs, destroying the cytoskeleton.
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Question 3 (5 points)
Page 1 of 23
,In hypoxic injury, sodium enters the cell and causes swellingbecause:
Page 2 of 23
, Question 3 options:
The cell membrane permeability increases for sodium during periods of hypoxia.
Adenosine triphosphate (ATP) is insufficient to maintain the pump that keeps sodium out of the cell. The lactic acid produ
by the hypoxia binds with sodium in the cell.
Sodium cannot be transported to the cell membrane during hypoxia.
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Question 4 (5 points)
What mechanisms occur in the liver cells as a result of lipidaccumulation?
Question 4 options:
Obstruction of the common bile duct, preventing the flow of bile from the liver to the gallbladder
Increased synthesis of triglycerides from fatty acids and decreased synthesis of apoproteins Increased binding of lipids w
apoproteins to form lipoproteins
Increased conversion of fatty acids to phospholipids
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Question 5 (5 points)
Which solution is best to use when cleaning a wound that is healing by 10
During an Immunoglobulin E (IgE)-mediated hypersensitivity reaction, th
degranulation of mast cells is aresult of which receptor action?
Question 5 options:
Histamine bound to H2
Chemotactic factor binding to the receptor
Page 3 of 23
Definite Success
What causes the rapid change in the resting membranepotential to initiate an action potential?
Question 1 options:
Potassium gates open and potassium rushes into the cell, changing the membrane potential from negativeto positive
Sodium gates open and sodium rushes into the cell, changing the membrane potential from negative topositive.
Sodium gates close, allowing potassium into the cell to change the membrane potential from positive tonegative.
Potassium gates close, allowing sodium into the cell to change the membrane potential from positive tonegative.
Save
Question 2 (5 points)
What is a consequence of leakage of lysosomal enzymes during chemic
injury?
Question 2 options:
Enzymatic digestion of the nucleus and nucleolus occurs, halting deoxyribonucleic acid (DNA) synthesis.
Influx of potassium ions into the mitochondria occurs, halting the adenosine triphosphate (ATP)production.
Edema of the Golgi body occurs, preventing the transport of proteins out of the cell. Shift of calcium out of the plas
membrane occurs, destroying the cytoskeleton.
Save
Question 3 (5 points)
Page 1 of 23
,In hypoxic injury, sodium enters the cell and causes swellingbecause:
Page 2 of 23
, Question 3 options:
The cell membrane permeability increases for sodium during periods of hypoxia.
Adenosine triphosphate (ATP) is insufficient to maintain the pump that keeps sodium out of the cell. The lactic acid produ
by the hypoxia binds with sodium in the cell.
Sodium cannot be transported to the cell membrane during hypoxia.
Save
Question 4 (5 points)
What mechanisms occur in the liver cells as a result of lipidaccumulation?
Question 4 options:
Obstruction of the common bile duct, preventing the flow of bile from the liver to the gallbladder
Increased synthesis of triglycerides from fatty acids and decreased synthesis of apoproteins Increased binding of lipids w
apoproteins to form lipoproteins
Increased conversion of fatty acids to phospholipids
Save
Question 5 (5 points)
Which solution is best to use when cleaning a wound that is healing by 10
During an Immunoglobulin E (IgE)-mediated hypersensitivity reaction, th
degranulation of mast cells is aresult of which receptor action?
Question 5 options:
Histamine bound to H2
Chemotactic factor binding to the receptor
Page 3 of 23
