NLN Nursing Pax Exam Prep - Science - Cell
structure and function questions and answers
2026\2027 A+ Grade
Cell
- correct answer is the smallest, living functional and structural unit for all living things.
Living cells are composed of approximately __ water and vary in size and shape
- correct answer 60%
What shape is a red blood cell?
- correct answer Disked shaped
What shape or size is a nerve cell?
- correct answer It is long and has extensions on their main body.
The nucleus contains?
- correct answer genetic information (DNA)
What does the nucleus do?
- correct answer It controls the activities of the cell
The Plasma (cell membrane) is known as ______
- correct answer Semipermeable membrane
What does a semipermeable membrane do?
- correct answer separates the contents of the cell from the surrounding fluid, (interstitial fluid)
, Interstitial fluid contains ______________
- correct answer substances such as amino acids, sugars, fatty acids, hormones, neurotransmitters, and
salts.
selectively permeable membrane
- correct answer it contains pores and channels that allow only particles of the right size or the right
chemical nature to pass through.
The plasma membrane contains ______ that bind with specific substances, allowing for special entry or
signals the cell to perform a certain activity.
- correct answer Receptors
Cytoplasm
- correct answer a fluid found between the plasma membrane and the nucleus that acts as scaffolding
for the organelles.
Organelles (little organs)
- correct answer specialized units in the cell that perform certain functions
Mitochondria
- correct answer are the locations for cellular respiration or the conversion of food to energy at the
cellular level. Mitochondria are the sites of energy production and of most of its ATP(Adenosine
triphosphate), which is a chemical the cell uses to the store and transfer energy within itself.
Ribosomes
- correct answer site of protein synthesis in the cell
some ribosomes float freely, where as others are attached to the _____
- correct answer endoplasmic reticulum (ER)
Endoplasmic Reticulum (ER)
- correct answer The transportation system of the cell. It moves materials around the cell
structure and function questions and answers
2026\2027 A+ Grade
Cell
- correct answer is the smallest, living functional and structural unit for all living things.
Living cells are composed of approximately __ water and vary in size and shape
- correct answer 60%
What shape is a red blood cell?
- correct answer Disked shaped
What shape or size is a nerve cell?
- correct answer It is long and has extensions on their main body.
The nucleus contains?
- correct answer genetic information (DNA)
What does the nucleus do?
- correct answer It controls the activities of the cell
The Plasma (cell membrane) is known as ______
- correct answer Semipermeable membrane
What does a semipermeable membrane do?
- correct answer separates the contents of the cell from the surrounding fluid, (interstitial fluid)
, Interstitial fluid contains ______________
- correct answer substances such as amino acids, sugars, fatty acids, hormones, neurotransmitters, and
salts.
selectively permeable membrane
- correct answer it contains pores and channels that allow only particles of the right size or the right
chemical nature to pass through.
The plasma membrane contains ______ that bind with specific substances, allowing for special entry or
signals the cell to perform a certain activity.
- correct answer Receptors
Cytoplasm
- correct answer a fluid found between the plasma membrane and the nucleus that acts as scaffolding
for the organelles.
Organelles (little organs)
- correct answer specialized units in the cell that perform certain functions
Mitochondria
- correct answer are the locations for cellular respiration or the conversion of food to energy at the
cellular level. Mitochondria are the sites of energy production and of most of its ATP(Adenosine
triphosphate), which is a chemical the cell uses to the store and transfer energy within itself.
Ribosomes
- correct answer site of protein synthesis in the cell
some ribosomes float freely, where as others are attached to the _____
- correct answer endoplasmic reticulum (ER)
Endoplasmic Reticulum (ER)
- correct answer The transportation system of the cell. It moves materials around the cell
