Practice Q's Flashcards
A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student?
a. a single circular chromosome
b. a nucleus
c. free-floating nuclear material
d. no organelles
b. a nucleus
A nurse is instructing the staff about cellular functions. Which cellular function is the nurse describing when an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
a. metabolic absorption
b. communication
c. secretion
d. respiration
d. respiration
A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of the genetic information be contained?
a. mitochondria
b. ribosome
c. nucleolus
d. nucleus cytoplasm
c. nucleolus
Which of the following can remove proteins attached to the cell’s bilayer by dissolving the layer itself.
a. peripheral membrane proteins
b. integral membrane proteins
c. glycoproteins
d. cell adhesion molecules
b. integral membrane proteins
Which of the following can bind to plasma membrane receptors?
a. oxygen
b. ribosomes
c. amphipathic lipids
d. ligands
d. ligands
A nurse is reviewing a report from a patient with metastatic cancer. What alternation in the extracellular matrix would support the diagnosis of metastatic cancer?
a. decreased fibronectin
b. increased collagen
c. decreased elastin
d. increased glycoproteins
a. decreased fibronectin
Which form of cell communication is used to relate to other cells in direct physical contact?
a. cell junction
b. gap junction
c. desmosome
d. tight junction
a. cell junction
Pancreatic beta cells secrete insulin, which inhibits secretion of glucagon from neighboring alpha cells. This action is an example of which of the following signaling types?
a. paracrine
b. autocrine
c. neurohormonal
d. hormonal
a. paracrine
In cellular metabolism, each enzyme has a high affinity for a:
a. solute
b. substrate
c. receptor
d. ribosome
b. substrate
An athlete runs a marathon, after which his muscles feel fatigued and unable to contract. The athlete asks the nurse why this happened. The nurse’s response is based on the knowledge that the problem is a result of a deficiency of:
a. GTP
b. AMP
c. ATP
d. GMP
c. ATP
Which phase of catabolism produces the most ATP?
a. digestion
b. glycolysis
c. oxidation
d. citric acid cycle
d. citric acid cycle
A nurse is teaching the staff about the phases of cellular catabolism. Which phases should the nurse include?
a. digestion, glycolysis, oxidation, and the citric acid cycle
b. diffusion, osmosis, and mediated transport
c. S phase, G phase, and M phase
d. metabolic absorption, respiration, and excretion
a. digestion, glycolysis, oxidation, and the citric acid cycle
A runner has depleted all the oxygen available for muscle energy. Which of the following will facilitate his continue muscle performance?
a. electron-transport chain
b. aerobic glycolysis
c. anaerobic glycolysis
d. oxidative phosphorylation
c. aerobic glycolysis
A faculty member asks a student to identify the appropriate term for the movement of a solute from an area of greater to lesser concentration. Which answer indicates the nursing student understood the teaching?
a. osmosis
b. diffusion
c. hydrostatic pressure
d. ative transport
b. diffusion
Which description accurately describes electrolytes?
a. small lipid-soluble molecules
b. large protein molecules
c. micronutrients used to produce ATP
d. electrically charged molecules
d. electrically charged molecules
A nurse is reading a chart and sees the term oncotic pressure. The nurse recalls that oncotic pressure (colloid osmotic pressure) is determined by:
a. the concentration of sodium
b. plasma proteins
c. hydrostatic pressure
d. the availability of membrane transporter proteins
b. plasma proteins
A patient has a body fluid of 300 mOsm/kg. This lab result is measuring:
a. osmolality
b. osmolarity
c. osmotic pressure
d. oncotic pressure
a. osmolality
A nurse is discussing the movement of fluid across the arterial end of capillary membranes into the interstitial fluid surrounding the capillary. Which process of fluid movement is the nurse describing?
a. hydrostatic pressure
b. osmosis
c. diffusion
d. active transport
a. hydrostatic pressure
How are potassium and sodium transported across plasma membranes?
a. by passive electrolyte channels
b. by coupled channels
c. by adenosine triphosphate enzyme (ATPase)
d. by diffusion
c. by adenosine triphosphate enzyme (ATPhase)
The ion transporter that moves Na+ and Ca2+ simultaneously in the same direction is an example of which of the following types of transport?
a. biport
b. uniport
c. antiport
d. symport
d. symport
During which process are bacteria engulfed for ingestion?
a. endocytosis
b. pinocytosis
c. phagocytosis
d. exocytosis
c. phagocytosis
Some cancer drugs work during the cell cycle phase where nuclear and cytoplasmic divisions occur. What is this cell cycle phase called?
a. G1
b. S
c. M
d. G2
c. M
Which causes the rapid change in the resting membrane potential that initiates an action potential?
a. potassium gates open, and potassium rushes into the cell, changing the membrane potential from negative to positive
b. sodium gates open, and sodium rushes into the cell, changing the membrane potential from negative to positive
c. sodium gates close, allowing potassium into the cell to change the membrane potential from positive to negative
d. potassium gates close, allowing sodium into the cell to change the membrane potential from positive to negative
b. sodium gates open, and sodium rushes into the cell, changing the membrane potential from negative to positive
A cell is isolated, and electrophysiology studies reveal that the resting membrane potential is -70mV. The predominant intracellular ion is Na+, and the predominant extracellular ion is K+. With voltage change, which of the following would result in an action potential?
a. K+ rushing into the cell
b. Na+ rushing into the cell
c. Na+ rushing out of the cell
c. K+ rushing out of the cell
a. K+ rushing into the cell
A nurse teaching the staff about platelet-derived growth factor includes information that platelet-derived growth factor (PDGF) stimulates the production of:
a. platelets
b. epidermal cells
c. connective tissue cells
d. fibroblast cells
c. connective tissue cells
The phase of the cell cycle during which the centromeres split and the sister chromatids are pulled apart is referred to as:
a. anaphase
b. telophase
c. prophase
d. metaphase
a. anaphase
What is the role of cytokines in cell reproduction?
a. provide growth factor for tissue growth and development
b. block progress of cell reproduction through the cell cycle
c. restrain cell growth and development
d. provide nutrients for cell growth and development
a. provide growth factor for tissue growth and development
A biopsy of the lung bronchi revealed ciliated epithelial cells that are capable of secretion and absorption. These cells are call _____ columnar epithelium.
a. simple
b. ciliated simple
c. stratified
d. pseudo stratified ciliated
b. ciliated simple
A student is reviewing functions of the cell. The student would be correct in identifying a chief function of the nerve cell as:
a. sensory interpretation
b. conductivity
c. maintenance of homeostasis
d. communication
b. conductivity
A nurse recalls that the basic types of tissues are? (SATA)
a. nerve
b. epithelial
c. mucosal
d. connective
e. skeletal
f. muscle
a. nerve
b. epithelial
d. connective
f. muscle
Characteristics of prokaryotes include which of the following? (SATA)
a. they contain no organelles
b. their nuclear material is not erased by a nuclear membrane
c. they contain a distinct nucleus
d. they contain no histones
e. they contain a cellular membrane
a. they contain no organelles
b. their nuclear material is not encased by a nuclear membrane
A report comes back indicating that muscular atrophy has occurred. A nurse recalls that muscular atrophy involves a decrease in muscle cell:
a. number
b. size
c. vacuoles
d. lipofuscin
b. size
During childhood, the thymus decreases in size, and this is referred to as what type of atrophy?
a. physiologic
b. pathologic
c. disuse
d. neurogenic
a. physiologic
When planning care for a cardiac patient, the nurse knows that in response to an increased workload, cardiac myocardial cells will experience hypertrophy which is an:
a. increase in size
b. decrease in length
c. increase in excitability
d. decrease in number
a. increase in size
A 55yo male with a 30yr history of smoking is examined for respiratory disturbance. Examination of his airway (bronchial) reveals that stratified squamous epithelial cells have replaced the normal columnar ciliated cells. This type of cellular adaption is called:
a. anaplasia
b. hyperplasia
c. metaplasia
d. dysplasia
c. metaplasia
When planning care for the pregnant patient, the nurse will recall that the mammary glands enlarge as a consequence of:
a. compensatory hyperplasia
b. hormonal hyperplasia
c. hormonal anaplasia
d. compensatory anaplasia
b. hormonal hyperplasia
A 24yo female presents with excessive menstrual bleeding. The physician identified endometrial changes that are due to hormonal imbalances. These cellular changes would be referred to as:
a. dysplasia
b. pathologic dysplasia
c. hyperplasia
d. pathologic hyperplasia
d. pathologic hyperplasia
A 55yo male is diagnosed with hepatocellular cancer secondary to hepatitis C. If the cancerous region of the liver is removed, the remaining cells would undergo:
a. pathologic hyperplasia
b. pathologic metaplasia
c. compensatory hyperplasia
d. compensatory aplasia
c. compensatory hyperplasia
A 40yo female’s Pap smear indicates abnormal changes in the shape and organization of cervical cells. Which term would be used to identify this type of change?
a. metaplasia
b. atrophy
c. hypertrophy
d. dysplasia
d. dysplasia
A 75yo male presents with chest pain on exertion. The chest pain is most likely due to hypoxic injury secondary to:
a. malnutrition
b. free radicals
c. ischemia
d. chemical toxicity
c. ischemia
A patient has a heart attack that leads to progressive cel injury that causes cell death with severe cell swelling and breakdown of organelles. What term would the nurse use to define this process?
a. adaptation
b. calcification
c. apoptosis
d. necrosis
d. necrosis
Sodium and water accumulation in an injured cell are a direct result of:
a. decreased ATP production
b. karyorrhexis
c. ribosome detachment
d. dehydration
a. decreased ATP production
The early dilation (swelling) of the cell’s endoplasmic reticulum results in:
a. increased aerobic metabolism
b. failure of DNA
c. reduced protein synthesis
d. increased Na+-K+ pump function
c. reduced protein synthesis
A 52yo male suffered a MI secondary to atherosclerosis and ischemia. Once blood flow is returned to the damaged heart, repercussion injury occurs as a result of:
a. oxidation stress
b. vacuolation
c. decreased intracellular calcium
d. lipid acceptor proteins
a. oxidation stress
A family presents to their PCP reporting headache, nausea, weakness, tinnitus, and vomiting. Which of the following would be the most likely explanation for these symptoms?
a. lead exposure
b. carbon monoxide poisoning
c. ethanol exposure
d. mercury poisoning
b. carbon monoxide poisoning
A common pathway of irreversible cell injury involves increased intracellular:
a. sodium
b. potassium
c. magnesium
d. calcium
d. calcium
A 50yo male sustained a closed head injury as a result of a MVA. CT scan revealed a collection of blood between the inner surface of the dura mater and the surface of the brain. Which type of injury will the nurse be caring for?
a. subdural hematoma
b. epidural hematoma
c. contusion
d. abrasion
a. subdural hematoma
A 20yo male presents to the ED with a jagged sharp-force injury that is longer than it is deep. Which type of would will the nurse be caring for?
a. stab wound
b. incised wound
c. puncture wound
d. chopping wound
b. incised wound
A 30yo female presents with a gunshot wound to the head. The wound has seared edges and a deep penetration of smoke and gunpowder fragments. This wound would be documented as a(n):
a. exit
b. intermediate range entrance
c. contact range entrance
d. indeterminate range entrance
c. contact range entrance
A 15yo female presents to the ER following a physical assault. She has internal damage to the neck with deep bruising. X-ray reveals fractures of the hyoid bone and tracheal and cricoid cartilage. Which of the following most likely caused her injuries?
a. chemical asphyxiation
b. choking asphyxiation
c. ligature strangulation
d. manual strangulation
d. manual strangulation
A 55yo male has swelling of the feet. Which of the following aided in the development of swelling?
a. increased ATP
b. chloride movement out of the cell
c. Na+ movement into the cell
d. decreased oncotic pressure
c. Na+ movement into the cell
A 35yo female is diagnosed with multiple myeloma. Biopsy of the tumor reveals Russell bodies, and lab testing reveals kidney dysfunction. Which substance should the nurse monitor as it is accumulating in the patient’s body?
a. glycogen
b. protein
c. pigment
d. melanin
b. protein
A newborn male is diagnosed with albinism based on skin, eye, and hair appearance. Which finding will supposed this diagnosis?
a. increased melanin
b. increased hemoproteins
c. inability to convert tyrosine to DOPA
d. inability to convert bile to bilirubin
c. inability to convert tyrosine to DOPA
A 23yo male develops a black eye following a fight. When the aide asks the nurse why this occurred, the nurse’s best response is that the bruising is due to an accumulation of:
a. transferring
b. bilirubin
c. albumin
d. hemosiderin
d. hemosiderin
Liquefactive necrosis occurs in the brain because:
a. debris is not digested by hydrolyses
b. of protein denaturation
c. it is rich in hydrolytic enzymes and lipids
d. ischemia results in chemical injury
c. it is rich in hydrolytic enzymes and lipids
A 2yo swallowed watch batteries. Following ingestion, kidney function was impaired, and the heart began to fail. Which of the following was the most likely cause?
a. karyorrhexis
b. coagulative necrosis
c. ammonia accumulation
d. caseous necrosis
b. coagulative necrosis
A group of prison inmates developed tuberculosis following exposure to an infected inmate. On examination, tissues were soft and granular (like clumped cheese). Which of the following is the most likely cause
a. coagulative necrosis
b. liquefactive necrosis
c. caseous necrosis
d. auto necrosis
c. caseous necrosis
A 50yo female became infected with clostridium bacteria and died a week later. Examination of her RBCs revealed lysis of membranes. Which of the following was the most likely cause of her death?
a. fat necrosis
b. wet gangrene
c. gangrenous necrosis
d. gas gangrene
d. gas gangrene
While reading a textbook, a student reads the term apoptosis. The student recalls that apoptosis is a condition in which cells program themselves to:
a. atrophy
b. die
c. regenerate
d. age
b. die
A 50yo male IV drug user is diagnosed with hepatitis C. Examination of the liver reveals cell death secondary to:
a. fat necrosis
b. physiologic apoptosis
c. infection-induced apoptosis
d. pyknosis
c. infection-induced apoptosis
What principle should the nurse remember when trying to distinguish aging from diseases?
a. it is difficult to tell the difference because both processes are believed to result from cell injury
b. it is easy to tell normal processes from abnormal processes
c. disease, unlike aging, has a genetic component
d. aging is defined as exceeding life expectancy, bot not maximal life span
a. it is difficult to tell the difference because both processes are believed to result from cell injury
When a nurse observes muscle stiffening occurring within 6-14hrs after death, the nurse should document this finding as the presence of:
a. livor mortis
b. gangrene
c. algor mortis
d. rigor mortis
d. rigor mortis
When a nurse is checking a urinalysis, the finding that would alert the nurse to cellular injury is the presence of:
a. slight glucose
b. excessive protein
c. blood
d. urea
b. excessive protein
An 86yo female patient has the wasting syndrome of aging, making her vulnerable to falls, functional decline, disease, and death. The nurse knows the patient is experiencing:
a. frailty
b. sarcopenia
c. somatic death
d. cellular aging
a. frailty