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NSG 5000 Quiz 1 to Quiz 5 / NSG5000 Quiz 1 to Quiz 5: South University (Latest 2020, 100% Correct, Already graded A) $15.49   Add to cart

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NSG 5000 Quiz 1 to Quiz 5 / NSG5000 Quiz 1 to Quiz 5: South University (Latest 2020, 100% Correct, Already graded A)

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NSG 5000 Quiz 1 to Quiz 5 / NSG5000 Quiz 1 to Quiz 5: South University 1. Question : Current research supports the belief that after heart muscle injury, the damage: Student Answer: Remains indefinitely because cardiac cells do not reproduce Is repaired by newly matured cardiomyocytes Gradually d...

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  • May 20, 2020
  • 32
  • 2019/2020
  • Exam (elaborations)
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NSG 5000 Quiz 1



1. Question : Current research supports the belief that after heart muscle injury, the damage:

Student Answer:

Remains indefinitely because cardiac cells do not reproduce

Is repaired by newly matured cardiomyocytes

Gradually decreases in size as mitotic cell division occurs

Is replaced by hypertrophy of remaining cells



Instructor Explanation: The recent discovery that cardiac stem cells exist in the heart and

differentiate into various cardiac cell lineages has profoundly changed the understanding of

myocardial biology; it is now believed that bone marrow–derived cardiac stem cells or

progenitor cells that have the ability to mature into cardiomyocytes may populate the heart after

injury. The other options do not accurately describe the process that is believed to occur to

address cardiac muscle damage.



2. Question : The cellular uptake of the nutrient cholesterol depends on which process?

Student Answer:

Receptormediated exocytosis

Antiport system

Receptormediated endocytosis

Passive transport

, Instructor Explanation: The cellular uptake of nutrients, such as cholesterol, for example,

depends on receptormediated

endocytosis. Nutrients

are not transported via the other options.



3. Question : Which statement is true about phagocytosis?

Student Answer:

Phagocytosis is an example of exocytosis.

Phagocytosis is dependent on small vesicles.

Phagocytosis involves the ingestion of bacteria.

Phagocytosis focuses on solute molecules.



Instructor Explanation: In phagocytosis, the large molecular substances are engulfed by the

plasma membrane and enter the cell so that they can be

isolated and destroyed by lysosomal enzymes. Two types of endocytosis are designated, based on

the size of the vesicle

formed. Pinocytosis (cell drinking) involves the ingestion of fluids and solute molecules through

the formation of small

vesicles, and phagocytosis (cell eating) involves the ingestion of large particles, such as

bacteria, through formation of large

vesicles (also called vacuoles). Phagocytosis in an example of endocytosis, not exocytosis.



4. Question : Lead poisoning affects the nervous system by:

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