09/06/2025, 09:52 NU 545 Unit 1 COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS (2025) EXAM| ALREADY GRADED A+ Flashcards | …
NU 545 Unit 1 COMPREHENSIVE QUESTIONS
AND VERIFIED ANSWERS (2025) EXAM|
ALREADY GRADED A+
Save
Terms in this set (105)
What is metabolic The uptake and use of nutrients and other substances
absorption? from the cells surrounds (pg. 3).
What uses oxygen to Peroxisomes contain enzymes to use o2 to remove H
remove hydrogen atoms atoms. This produces hydrogen peroixide. (pg 8)
in an oxidative reaction?
Lysosomes aid in cellular digestion, seen as "trash
During cell injury what is cans and recycling agents" "as cells complete their life
released that is capable of span and die, lysosomes digest...the debris...
cellular autodigestion? Lysosomes involved in this process of autodigestion
are called autolysosomes or autophagomes (pg 7-8).
Where is the genetic info The nucleus contains the Nucleolus, a small dense
contained in the cell? structure composed of RNA, DNA, DNA protein. Pg 3.
Cell membranes contain "The main components of cell membranes are lipids
which major chemical and proteins. The basic structure of cell membranes is
components? the lipid bilayer..." pg 12
Diffusion is the movement of a solute molecule from
and area of greater solute concentration to an area of
What allows potassium to
lesser solute concentration. (pg. 29). Active transport
diffuse in and out of cells?
of K+ and Na+ requires a Sodium-Potassium Pump (pg.
31).
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,09/06/2025, 09:52 NU 545 Unit 1 COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS (2025) EXAM| ALREADY GRADED A+ Flashcards | …
How is the cell protected Plasma membrane pg 12 table 1.1 (functions of
from injury? membrane).
In cirrhosis, what does causes a decrease in membrane fluidity and affects
cholesterol have to do the cells' ability to transport oxygen
with the erythrocytes?
PDGF stimulates proliferation of connective tissue
What is platelet-derived
cells and neuroglial cells. Can help with creating
growth factor?
blood clots. Pg 38.
Cells need to communicate w/ each other to maintain
a stable internal environment, or homeostasis; to
regulate growth and division... it is done by 3 main
ways. 1) they display plasma membrane-bound
What is cell
signaling molecules (receptors) that affect the cell
communication? How
itself and other cells in direct physical contact. 2) they
does it occur?
affect receptor proteins inside the target cell and the
signal molecule has to enter the cell to bind w/ them.
3) they form protein channels that directly coordinate
the activities of the adjacent cells. Pg 19.
Primary means of cell-to-cell communication. 5 forms
of signaling mediated by secreted molecules: (1)
Contact-dependent signaling requires cells to be in
close membrane-membrane contact; (2) Paracrine
signaling- cells secrete local chemical mediators that
are quickly absorbed, destroyed, or immobilized; (3)
Autocrine signaling- cells produce signals that they,
What is chemical
themselves, respond to (cancer cells); (4) Hormonal
signaling?
signaling involves specialized endocrine cells that
secrete chemicals called hormones (TSH). Hormones
are released by one set of cells and travel through the
tissue and through the bloodstream to produce a
response in other sets of cells; (5) Neurohormonal
signaling- hormones are released into the blood by
neurosecretory neurons. (p.19)
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, 09/06/2025, 09:52 NU 545 Unit 1 COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS (2025) EXAM| ALREADY GRADED A+ Flashcards | …
How is glucose Pancreatic cells secrete and release insulin to signal
transported from the muscle cells to absorb sugar from the blood for
blood to the cell? energy. (p.3)
The Na+ -K+ antiport system (Na+ moving out of the
cell and K+ moving into the cell) uses the direct
energy of ATP to move these cations. The transporter
protein is the enzyme adenosine triphosphatase
(ATPase). Approximately 60% to 70% of the ATP
synthesized by cells is used to maintain the Na+-K+
transport system. 1, three Na+ ions bind to sodium-
binding sites on the carrier's interface. 2, at the same
Understand the
time, an energy- containing adenosine triphosphate
transportation of
molecule produced by the cell's mitochondria bind to
potassium and sodium
the carrier. The ATP disassociates, transferring its
across plasma membranes
stored energy to the carrier. 3 and 4, the carrier then
changes shape, releases the three Na+ ions to the
outside of the cell, and attracts two potassium ions to
its potassium- binding site. 5, the carrier then returns
to its original shape, releasing the two K+ ions and the
remnant of the ATP molecule to the inside of the cell.
The carrier is now ready for another pumping cycle
(p.31)
requires life, biologic activity, and the cell's
expenditure of metabolic energy. Unlike passive
What is active transport? transport, active transport occurs across only living
membranes that have to drive the flow "uphill" by
coupling it to an energy source (p. 28)
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NU 545 Unit 1 COMPREHENSIVE QUESTIONS
AND VERIFIED ANSWERS (2025) EXAM|
ALREADY GRADED A+
Save
Terms in this set (105)
What is metabolic The uptake and use of nutrients and other substances
absorption? from the cells surrounds (pg. 3).
What uses oxygen to Peroxisomes contain enzymes to use o2 to remove H
remove hydrogen atoms atoms. This produces hydrogen peroixide. (pg 8)
in an oxidative reaction?
Lysosomes aid in cellular digestion, seen as "trash
During cell injury what is cans and recycling agents" "as cells complete their life
released that is capable of span and die, lysosomes digest...the debris...
cellular autodigestion? Lysosomes involved in this process of autodigestion
are called autolysosomes or autophagomes (pg 7-8).
Where is the genetic info The nucleus contains the Nucleolus, a small dense
contained in the cell? structure composed of RNA, DNA, DNA protein. Pg 3.
Cell membranes contain "The main components of cell membranes are lipids
which major chemical and proteins. The basic structure of cell membranes is
components? the lipid bilayer..." pg 12
Diffusion is the movement of a solute molecule from
and area of greater solute concentration to an area of
What allows potassium to
lesser solute concentration. (pg. 29). Active transport
diffuse in and out of cells?
of K+ and Na+ requires a Sodium-Potassium Pump (pg.
31).
https://quizlet.com/1052631271/nu-545-unit-1-comprehensive-questions-and-verified-answers-2025-exam-already-graded-a-flash-cards/?new 1/29
,09/06/2025, 09:52 NU 545 Unit 1 COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS (2025) EXAM| ALREADY GRADED A+ Flashcards | …
How is the cell protected Plasma membrane pg 12 table 1.1 (functions of
from injury? membrane).
In cirrhosis, what does causes a decrease in membrane fluidity and affects
cholesterol have to do the cells' ability to transport oxygen
with the erythrocytes?
PDGF stimulates proliferation of connective tissue
What is platelet-derived
cells and neuroglial cells. Can help with creating
growth factor?
blood clots. Pg 38.
Cells need to communicate w/ each other to maintain
a stable internal environment, or homeostasis; to
regulate growth and division... it is done by 3 main
ways. 1) they display plasma membrane-bound
What is cell
signaling molecules (receptors) that affect the cell
communication? How
itself and other cells in direct physical contact. 2) they
does it occur?
affect receptor proteins inside the target cell and the
signal molecule has to enter the cell to bind w/ them.
3) they form protein channels that directly coordinate
the activities of the adjacent cells. Pg 19.
Primary means of cell-to-cell communication. 5 forms
of signaling mediated by secreted molecules: (1)
Contact-dependent signaling requires cells to be in
close membrane-membrane contact; (2) Paracrine
signaling- cells secrete local chemical mediators that
are quickly absorbed, destroyed, or immobilized; (3)
Autocrine signaling- cells produce signals that they,
What is chemical
themselves, respond to (cancer cells); (4) Hormonal
signaling?
signaling involves specialized endocrine cells that
secrete chemicals called hormones (TSH). Hormones
are released by one set of cells and travel through the
tissue and through the bloodstream to produce a
response in other sets of cells; (5) Neurohormonal
signaling- hormones are released into the blood by
neurosecretory neurons. (p.19)
https://quizlet.com/1052631271/nu-545-unit-1-comprehensive-questions-and-verified-answers-2025-exam-already-graded-a-flash-cards/?new 2/29
, 09/06/2025, 09:52 NU 545 Unit 1 COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS (2025) EXAM| ALREADY GRADED A+ Flashcards | …
How is glucose Pancreatic cells secrete and release insulin to signal
transported from the muscle cells to absorb sugar from the blood for
blood to the cell? energy. (p.3)
The Na+ -K+ antiport system (Na+ moving out of the
cell and K+ moving into the cell) uses the direct
energy of ATP to move these cations. The transporter
protein is the enzyme adenosine triphosphatase
(ATPase). Approximately 60% to 70% of the ATP
synthesized by cells is used to maintain the Na+-K+
transport system. 1, three Na+ ions bind to sodium-
binding sites on the carrier's interface. 2, at the same
Understand the
time, an energy- containing adenosine triphosphate
transportation of
molecule produced by the cell's mitochondria bind to
potassium and sodium
the carrier. The ATP disassociates, transferring its
across plasma membranes
stored energy to the carrier. 3 and 4, the carrier then
changes shape, releases the three Na+ ions to the
outside of the cell, and attracts two potassium ions to
its potassium- binding site. 5, the carrier then returns
to its original shape, releasing the two K+ ions and the
remnant of the ATP molecule to the inside of the cell.
The carrier is now ready for another pumping cycle
(p.31)
requires life, biologic activity, and the cell's
expenditure of metabolic energy. Unlike passive
What is active transport? transport, active transport occurs across only living
membranes that have to drive the flow "uphill" by
coupling it to an energy source (p. 28)
https://quizlet.com/1052631271/nu-545-unit-1-comprehensive-questions-and-verified-answers-2025-exam-already-graded-a-flash-cards/?new 3/29
