• ¿Documento equivocado? Cámbialo gratis
  • Escrito por estudiantes que aprobaron
  • Inmediatamente disponible después del pago
  • Leer en línea o como PDF
Vender
¿Dónde estudias?
Tu idioma
Document preview thumbnail
Vista previa 2 fuera de 13 páginas
Examen

NURS231/ NURS 231 Exam 1: (Latest 2026/ 2027 Update) Pathophysiology: Cellular Adaptation, Injury, and Inflammation Review| Practice Questions with Verified Answers and Detailed Rationales| Grade A| 100% Correct (Verified Solutions) – Portage Learning

Document preview thumbnail
Vista previa 2 fuera de 13 páginas

INSTANT PDF DOWNLOAD — This comprehensive practice test for NURS 231 Exam 1 at Portage Learning covers Pathophysiology for the 2026/2027 academic year first examination. It features practice questions with verified answers and detailed rationales in multiple-choice, select-all-that-apply, true/false, and short answer formats aligned with the Portage Learning nursing curriculum. CELLULAR BIOLOGY FUNDAMENTALS (EXAM 1 FOCUS) Basic Cellular Structures and Functions Question 1: Cell Membrane Composition The cell membrane is primarily composed of: A) A single layer of phospholipids with embedded proteins B) A phospholipid bilayer with hydrophobic tails facing outward and hydrophilic heads facing inward C) A phospholipid bilayer with hydrophilic heads facing the aqueous environments and hydrophobic tails facing each other D) A protein bilayer with embedded phospholipids Correct Answer: C Rationale: The cell membrane (plasma membrane) consists of a phospholipid bilayer. The hydrophilic (water-loving) phosphate heads face outward toward the aqueous intracellular and extracellular environments. The hydrophobic (water-fearing) fatty acid tails face each other, away from water. This arrangement creates a semipermeable barrier. Embedded proteins serve functions such as transport, cell recognition, and enzymatic activity. The fluid mosaic model describes this dynamic structure. Question 2: Nucleus Function The primary function of the nucleus is to: A) Synthesize proteins B) Generate ATP through cellular respiration C) Store and protect the cell's genetic material (DNA) D) Package and modify proteins for secretion Correct Answer: C Rationale: The nucleus contains the cell's chromosomal DNA, which carries the genetic blueprint for protein synthesis and cellular regulation. It is enclosed by a double membrane (nuclear envelope) with nuclear pores that regulate transport between the nucleus and cytoplasm. The nucleolus within the nucleus is responsible for ribosome synthesis. Protein synthesis (A) occurs at ribosomes. ATP generation (B) occurs in mitochondria. Protein packaging/modification (D) occurs in the Golgi apparatus. Question 3: Mitochondria Which statement about mitochondria is accurate? A) Mitochondria are responsible for lipid synthesis and detoxification B) Mitochondria convert glucose into ATP through aerobic cellular respiration C) Mitochondria contain their own DNA that is inherited from both parents D) Mitochondria are the site of protein synthesis Correct Answer: B Rationale: Mitochondria are the "powerhouses" of the cell, generating ATP through aerobic cellular respiration (Krebs cycle and electron transport chain). The inner membrane forms cristae to increase surface area for ATP production. Mitochondria contain their own circular DNA (mtDNA), which is inherited maternally (from the mother). Cells with high energy demands (muscle, nerve, liver) contain more mitochondria. Statement C is incorrect because mtDNA is inherited from the mother only (maternal inheritance not both parents). Question 4: Ribosomes Ribosomes are responsible for: A) Lipid synthesis and detoxification of drugs B) Packaging of proteins into vesicles for secretion C) Protein synthesis (translation of mRNA) D) Breakdown of cellular waste and pathogens Correct Answer: C Rationale: Ribosomes are composed of rRNA and protein. They translate messenger RNA (mRNA) sequences into polypeptide chains, the process of protein synthesis. Ribosomes can be free in the cytoplasm (synthesizing proteins for intracellular use) or attached to the rough endoplasmic reticulum (synthesizing proteins for secretion or membrane incorporation). Lipid synthesis and detoxification (A) occur in smooth ER. Packaging (B) occurs in Golgi apparatus. Breakdown (D) occurs in lysosomes and proteasomes. Question 5: Endoplasmic Reticulum Rough endoplasmic reticulum (RER) is distinguished from smooth endoplasmic reticulum (SER) by the presence of: A) Golgi vesicles B) Ribosomes attached to its surface C) Cristae for increased surface area D) Enzymes for lipid synthesis Correct Answer: B Rationale: The rough ER is called "rough" because ribosomes are attached to its cytoplasmic surface. These ribosomes synthesize proteins that enter the RER lumen for folding, modification, and transport. The smooth ER lacks ribosomes and is involved in lipid synthesis, detoxification, carbohydrate metabolism, and calcium storage. Cristae are found in mitochondria (C).

Vista previa del contenido

1|Page




NURS 231 Pathophysiology Exam 1 2026/2027

Practice Questions | Verified Answers | Detailed

Rationales | Grade A | Portage Learning




1. What is the ANA definition of nursing?
Correct Answer: Nursing incorporates the art and science of caring and
focuses on the protection, promotion, and optimization of health and abilities,
prevention of illness and injury.
Rationale:
1. The ANA definition is a standard definition of nursing.
2. This is a fundamental nursing question.


2. What is the ICN definition of nursing?
Correct Answer: Nursing encompasses autonomous and collaborative care
of individuals of all ages, families, groups, and communities, sick or well, and
in all settings.
Rationale:
1. The ICN definition emphasizes the global scope of nursing.
2. This is a fundamental nursing question.


3. What is professionalism?

, 2|Page


Correct Answer: Professionalism is a commitment to self and the profession
as an obligation to practice with integrity and honesty.
Rationale:
1. Professionalism encompasses core values and behaviors.
2. This is a standard nursing professionalism question.


4. What is accountability?
Correct Answer: Accountability is a legal obligation, a moral or ethical
commitment to do the right thing in every situation, and being responsible for
actions and consequences.
Rationale:
1. Accountability is a core nursing value.
2. This is a standard nursing ethics question.


5. What is responsibility?
Correct Answer: Responsibility is the obligation to perform work duties or
tasks; being reliable, dependable, and persistent.
Rationale:
1. Responsibility is distinct from accountability.
2. This is a standard nursing professionalism question.


6. What is excellence in care?
Correct Answer: Delivery of care in a safe manner; quality of nursing care;
good communication; information; nurse-to-nurse interaction; environment.

Información del documento

Subido en
2 de mayo de 2026
Número de páginas
13
Escrito en
2025/2026
Tipo
Examen
Contiene
Preguntas y respuestas
$12.99

¿Documento equivocado? Cámbialo gratis Dentro de los 14 días posteriores a la compra y antes de descargarlo, puedes elegir otro documento. Puedes gastar el importe de nuevo.
Escrito por estudiantes que aprobaron
Inmediatamente disponible después del pago
Leer en línea o como PDF

Seller avatar
Los indicadores de reputación están sujetos a la cantidad de artículos vendidos por una tarifa y las reseñas que ha recibido por esos documentos. Hay tres niveles: Bronce, Plata y Oro. Cuanto mayor reputación, más podrás confiar en la calidad del trabajo del vendedor.
DoctorKen
3.8
(167)
Vendido
920
Seguidores
121
Artículos
6650
Última venta
2 horas hace



Por qué los estudiantes eligen Stuvia

Creado por compañeros estudiantes, verificado por reseñas

Calidad en la que puedes confiar: escrito por estudiantes que aprobaron y evaluado por otros que han usado estos resúmenes.

¿No estás satisfecho? Elige otro documento

¡No te preocupes! Puedes elegir directamente otro documento que se ajuste mejor a lo que buscas.

Paga como quieras, empieza a estudiar al instante

Sin suscripción, sin compromisos. Paga como estés acostumbrado con tarjeta de crédito y descarga tu documento PDF inmediatamente.

Student with book image

“Comprado, descargado y aprobado. Así de fácil puede ser.”

Alisha Student

Preguntas frecuentes