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Total questions: 150
Worksheet time: 1hrs 15mins
Which statement best defines physiology in a clinical science context?
Investigation of genetic mutations causing disease
Study of normal body functions and processes
Study of disease mechanisms in body systems
Analysis of abnormal lab values in illness
What is the primary focus of pathophysiology?
Behavioral adaptations to chronic illness
Population-level patterns of epidemics across regions
Normal regulatory functions in healthy organs
Underlying changes in body physiology from disease or injury
Which pair correctly contrasts physiologic and pathophysiologic amenorrhea?
Physiologic: due to infection; Pathophysiologic: due to aging
Physiologic: due to menopause; Pathophysiologic: due to cancer
Physiologic: due to surgery; Pathophysiologic: due to pregnancy
Physiologic: due to trauma; Pathophysiologic: due to exercise
Homeostasis most accurately refers to which process?
Self-limited spread of pathogens through tissues
Maintenance of stable internal conditions in body
Rapid compensation after acute blood loss
Genetic regulation of protein synthesis in cells
Which term pair describes system responses that attempt to restore balance versus failure to do so?
Diagnosis and prognosis
Inflammation and infection
Compensation and decompensation
Mutation and adaptation
Which option best distinguishes disease from disorder versus syndrome in clinical terminology?
Disease: defined pathology; syndrome: clustered signs; disorder: functional disturbance
Disease: clustered signs; syndrome: defined pathology; disorder: genetic trait
Disease: genetic trait; syndrome: infection; disorder: immune response
Disease: immune response; syndrome: toxin exposure; disorder: inflammation
Terms relating to elements leading up to a disease mainly address which concept?
Prodromal risk factors and exposures
Sequela after recovery phase
Course from onset to resolution
Compensatory changes in homeostasis
Which choice accurately defines etiology in medical science?
Course of clinical manifestations over time
Immediate compensatory responses
Causes and origins of a disease
Aftermath and long-term consequences
In clinical progression, which term best describes the aftermath of a disease?
Sequela
Etiology
Syndrome
Prodrome
Which example correctly contrasts physiologic versus pathophysiologic albuminuria?
Physiologic: due to diabetic nephropathy; Pathophysiologic: benign overnight
Physiologic: persistent with nephritis; Pathophysiologic: from normal aging
Physiologic: from chronic kidney failure; Pathophysiologic: from dehydration
Physiologic: transient after exercise; Pathophysiologic: due to glomerular damage
Which statement best defines homeostasis in the human body?
Acceleration of metabolic reactions after meals
Elimination of external environmental stressors
Maximization of energy output during exercise
Maintenance of constant internal conditions
Which requirement is essential for cells to maintain homeostasis?
Intermittent exposure to extreme temperatures
Periodic deprivation of oxygen and glucose
Continuous supply of nutrients, water, and oxygen
Variable pH and wide temperature ranges
What term describes challenges that disrupt the body’s internal balance?
Effectors
Stressors
Determinants
Catalysts
Compensation after a stressor is primarily achieved by what?
Control mechanisms coordinating responses
Random fluctuations in body fluids
Passive diffusion across membranes only
Long-term genetic adaptations exclusively
During exposure to high ambient temperature, which mechanism helps lower body temperature?
Decreased evaporation due to dry skin
Reduced skin blood flow and shivering
Bradycardia with vessel constriction
Sweating with superficial vessel dilation
When significant blood volume is lost, which immediate cardiovascular change supports circulation?
Reduced blood flow to central organs
Increased heart rate to maintain perfusion
Decreased heart rate to conserve energy
Dilation of peripheral limb arteries
In severe dehydration, what vascular response prioritizes vital organs?
Selective venous dilation in the limbs
Peripheral arterial constriction and central shunting
Peripheral arterial dilation and heat dissipation
Uniform vasodilation across all tissues
Which outcome defines decompensation?
Enhanced adaptation that fully corrects damage
Activation of compensatory sweating only
Temporary restoration of fluid balance
Failure of control mechanisms to meet stressors
Which statement correctly distinguishes disease from disorder?
Disease is temporary; disorder is always chronic
Disease harms body health; disorder disturbs function
Disease affects mind only; disorder affects body only
Disease is symptom collection; disorder is infection
What best describes a syndrome?
A single laboratory abnormality in isolation
A reversible physiological adaptation
A collection of symptoms occurring together
An infectious agent with defined genome
Which statement best defines a risk factor in disease development?
A condition directly causing the disorder
A variable increasing probability of a disorder
A symptom reported by the patient
A treatment preventing the disorder
Which is an example of a precipitating factor?
HIV causing immunodeficiency
Exertion triggering an asthma attack
Autoimmune reaction in rheumatic disease
Age increasing cardiovascular risk
Etiology refers to which aspect of disease?
Hospital-acquired issues
Timing and acuity
Observable clinical signs
Cause and contributing factors
Which pairing correctly matches disease and etiologic agent?
TB — mycobacterium
AIDS — autoimmune reaction
Rheumatic heart — HIV
Asthma — nosocomial
What does idiopathic mean when describing a disease?
Cause is unidentifiable
Cause is hospital-acquired
Cause is medical treatment
Cause is lifestyle-related
An iatrogenic problem most likely results from which scenario?
Infection acquired from a roommate
Seasonal allergies from pollen
Complication due to prescribed antibiotics
Genetic predisposition to hypertension
Which situation defines a nosocomial infection?
UTI from inherited anomalies
UTI after long-distance travel
UTI developing during hospitalization
UTI triggered by strenuous exercise
Clinical manifestations include signs and symptoms. Which statement distinguishes signs from symptoms?
Signs are always systemic
Signs occur only acutely
Signs are subjective; symptoms objective
Signs are objective; symptoms subjective
Which set lists local signs and symptoms?
Redness, rash, swelling
Fever, malaise, hives
Urticaria, systemic lymphadenopathy
Fatigue, nausea, pain
Which description best characterizes acute S&S?
Rapid onset over days; short duration
Gradual onset over weeks; persistent course
Slow onset over months; long duration
Rapid onset over hours; chronic course
Which statement best defines acute signs and symptoms in a clinical context?
Rapid onset, short duration, resolve in days
Mild baseline variations without change
Slow onset, wax and wane for months
Long-standing, insidious progression
In medical usage, an increase in acuity of a condition most directly means:
Longer duration without progression
Improved clarity of diagnosis
Greater severity requiring intervention
Shift from peripheral to central
Which scenario exemplifies a remission?
Symptoms diminish significantly over weeks
Symptoms worsen and require hospitalization
New symptoms appear acutely overnight
Blood shunted away from extremities
Exacerbation most accurately refers to:
Distal tissue losing oxygenation
Making signs and symptoms worse
Moving a problem toward the core
Constriction of peripheral vessels
Proximal describes a location that is:
Nearer to the body’s core
Farther from the organ’s origin
Away from central circulation
Closest to the distal endpoint
Peripheral signs most likely appear when:
Blood vessels in extremities constrict
Cardiac output rises above normal
Central organs reduce oxygen use
Venous pressure equalizes centrally
A classic peripheral finding after major blood loss is:
Edematous distal digits
Hyperemic lower legs
Warm, flushed hands
Cool, pale extremities
Distal refers to a site that is:
Farther away from the core
Adjacent to the proximal joint
Closer to central circulation
Exactly at the organ’s hilum
Which brief definition best captures shock in this context?
Low blood pressure with poor tissue perfusion
High blood pressure with bradycardia
Elevated central flow to extremities
Normal pressure but increased oxygenation
Which statement best defines prognosis in clinical practice?
The average survival time for all similar patients
The definitive cure determined by laboratory testing
The immediate diagnosis from initial physical exam
The predicted outcome of a disease based on factors
What does presence of comorbidities most often do to prognosis?
Guarantees a positive long‑term result
Increases chance of poor outcomes
Has no measurable clinical impact
Improves recovery speed in most cases
In clinical notes, which sentence correctly illustrates comorbidity affecting recovery?
The patient’s heart and lung disease hindered recovery
The patient’s normal labs removed all risk
The patient’s prior surgery improved lung capacity
The patient’s diet ensured rapid wound healing
Which term best matches: the aftermath of a disease resulting in an abnormal condition?
Remission
Prodrome
Sequela
Etiology
Which option pairs a disease with a plausible sequela listed in the material?
Chicken pox leading to scarring
Stroke leading to increased reflexes
Rheumatic fever leading to stronger valves
Pneumonia leading to guaranteed weight gain
Choose the correct meaning of the prefix hyper‑
Deficient, below normal
Within the blood
Pertaining to fat
Excessive, above normal
Which suffix denotes removal of an anatomical part?
‑lysis
‑ectomy
‑itis
‑emia
Which term correctly matches its meaning: IV?
IntensiveCare Unit
Intravenous
Idiopathic
Inferior
Which suffix indicates destruction of a substance, usually a cell?
-lysis indicates destruction of a cell
-plasty indicates destruction of a cell
-megaly indicates destruction of a cell
-pathy indicates destruction of a cell
What does the prefix macro- mean in medical terminology?
meaning towards the front
meaning large or long
meaning rapid or fast
meaning denoting small
Which term refers to an artificial opening into the urinary or gastrointestinal tract?
ostomy artificial opening
otomy cutting operation
oscopy viewing procedure
plasty surgical shaping
What vital sign is measured in beats per minute?
T body temperature
HR heart rate
BP blood pressure
RR respiratory rate
Which term means situated above or directly upward?
unilateral confined to one side
symmetrical equality in two parts
ventral towards front side
superior situated upward
Which oxygen measurement is obtained by pulse oximeter?
Hemoglobin concentration
Arterial pH level
Partial pressure of CO2
O2 saturation percentage
Which term best describes disease acquired in a hospital setting?
idiopathic cause unknown
iatrogenic provider induced
nosocomial hospital acquired
proximal near the center
Trisomy 21 is related to which type of genetic alteration?
single nucleotide polymorphism
chromosomal aberration change
mitochondrial DNA deletion
epigenetic methylation event
Which diseases are associated with altered protein synthesis due to genetic defects?
peptic ulcer and pancreatitis
asthma and seasonal allergies
hypertension and type 2 diabetes
sickle cell anemia and polycystic kidney
Recombinant DNA is used primarily for which purpose in therapy?
assessing heart rate response
measuring oxygen saturation
diagnosing chromosomal trisomies
producing therapeutic proteins
Which molecules make up the ordered sequence in a gene within DNA?
Ribose phosphate sugar molecules only
Lipids arranged as bilayer segments
Adenine guanine cytosine thymine bases
Amino acids linked in peptide chains
Which statement best describes the main function of genes?
Coding for synthesis of proteins
Storing cellular ATP energy
Creating new cells by mitosis
Transporting oxygen in blood
Which is a permanent protein trait example governed by genes?
Daily insulin secretion rhythm
Muscle glycogen breakdown rate
Adaptive immune memory cells
Eye pigment determining color
When a gene mutates, what commonly happens to the protein it codes?
It malfunctions and alters function
It always increases production
It becomes unrelated to enzymes
It never changes phenotype
A mutation in the lactase-coding gene most likely leads to which outcome?
Enhanced glucose uptake causing hypoglycemia
Impaired lactose breakdown causing intolerance
Reduced bile production causing jaundice
Improved fat digestion causing weight loss
How is a chromosome summarized in structure?
Lipid vesicles enclosing nucleotides
RNA strands packaged into ribosomes
DNA molecule formed into a specialized shape
Protein fibers twisted into microtubules
How many total chromosomes does a typical human receive from both parents?
Sixty-four in thirty-two pairs
Twenty-three in single set
Forty-four excluding sex pair
Forty-six in twenty-three pairs
Which description correctly distinguishes autosomal from sex chromosomes?
Autosomal are fewer; sex are twenty-two
Autosomal are non-sex; sex are XX or XY
Autosomal are only X; sex are Y only
Autosomal determine sex; sex determine traits
What term names the picture arranging chromosomes by pairs for study?
Karyotype photograph of pairs
Phenotype chart of traits
Haplotype map of SNPs
Genotype list of alleles
Partner genes located at the same locus coding for the same trait are called what?
A pair of alleles on homologs
Transposons mobile elements
Centromeres attachment regions
Sister chromatids identical copies
In a pair of alleles, which statement is accurate about dominance?
Recessive alleles are always harmful
Dominance depends only on environment
Both must be dominant in all cases
One can be dominant and one recessive
How are recessive and dominant genes notated in genotype examples?
Greek symbols for both categories
Lower-case for recessive, upper-case for dominant
Upper-case for recessive, lower-case for dominant
Numbers for recessive, letters for dominant
Which genotype example represents heterozygosity using letter g?
gG with two recessive alleles
gg with two recessive alleles
GG with two dominant alleles
Gg with one dominant one recessive
Which term refers to a person’s observable characteristics resulting from genes and environment?
Karyotype lists chromosome numbers
Genotype describes allele composition
Phenotype describes observable traits
Haplotype lists linked allele blocks
Which statement best distinguishes genotype from phenotype?
Genotype is allele composition
Genotype is environmental exposure
Genotype is observable behavior
Phenotype is allele set
Which pair of chromosomes works differently and can lead to sex‑linked inheritance patterns?
Chromosome pair nineteen
Chromosome pair twelve
Chromosome pair twenty‑three
Chromosome pair twenty‑one
A Punnett square is most often used to determine which outcome?
Percent chance of a child’s phenotype
List of all possible mutations
Location of genes on chromosomes
Exact DNA sequence of a gene
Which category includes disorders caused by abnormalities in mitochondrial DNA?
Chromosomal disorders grouping
Single‑gene disorders grouping
Multifactorial genetic disorders
Mitochondrial DNA disorders
Which description aligns with multifactorial genetic disorders?
Defects limited to mitochondrial DNA
Environmental triggers with gene variations
Extra or missing chromosomes only
Single mutated gene only
Which example illustrates an inherited single‑gene disorder mentioned in the material?
Skin aging from free radicals
Type II diabetes from lifestyle
Cancer from oncogene activation
Sickle cell disease from mutated gene
Which process describes spontaneous genetic disorder development highlighted in the notes?
Gamete nondisjunction during meiosis
Free radicals cause DNA damage
Maternal imprinting during gestation
Horizontal gene transfer in cells
What is the typical cellular location of the majority of DNA?
Cytosolic ribosomes
Endoplasmic reticulum
Mitochondrial matrix
Nucleus of cells
Which statement about mitochondrial DNA disorders is accurate?
They only affect nuclear transcription
They are uncommon and not discussed further
They always cause sex‑linked traits
They are common and widely studied
Which term describes an influence such as drugs, radiation, or viruses that can cause congenital defects?
Carcinogen promoting malignant transformation
Teratogen causing developmental defects
Pathogen inducing infectious symptoms
Mutagen factor causing random variation
Congenital defects are best defined as which of the following?
Acquired abnormalities after adolescence
Heritable traits improving fitness
Temporary changes due to infection
Abnormalities detectable at birth
Fetal alcohol syndrome occurs because alcohol toxicity during gestation leads primarily to what outcome?
Epigenetic silencing of X chromosome
Gene mutations during development
Chromosome loss during meiosis
Mitochondrial DNA expansion
Thalidomide exposure during pregnancy is most strongly associated with which phenotype in newborns?
Hydrocephalus resolving postnatally
Microcephaly without limb impact
Cleft palate with normal limbs
Abnormal arms and legs at birth
Which statement most accurately characterizes chromosomal disorders?
They arise only from point mutations
They result from alterations to number or structure
They involve exclusively mitochondrial genes
They never affect local gene regulation
Down syndrome most commonly results from which chromosomal event?
Trisomy of chromosome 21
Duplication of X chromosome
Deletion at chromosome 21
Translocation of chromosome 14
In trisomy 21, what total chromosome number is typically observed in the fetus?
Forty-five chromosomes total
Forty-six chromosomes total
Forty-eight chromosomes total
Forty-seven chromosomes total
Which physical characteristics are typical in the phenotype of trisomy 21?
Tall stature and narrow palpebral fissures
Low-set ears and epicanthic folds
Macroglossia with elongated limbs
Hypertonia and prominent nasal bridge
Which term refers to structural rearrangement of gene sites on a chromosome, exemplified by the Philadelphia chromosome?
Inversion of centromeric regions
Translocation between chromosomes
Amplification of tandem repeats
Nondisjunction during meiosis
Which statement best describes single-gene disorders?
They occur only in mitochondrial DNA
They arise from polygenic environmental traits
They result from inherited mutated genes
They require chromosomal deletions and translocations
Which inheritance patterns are typical for single-gene disorders?
Chromosomal nondisjunction in meiosis I
Mitochondrial maternal-only transmission
Polygenic multifactorial with epigenetic marks
Autosomal recessive, autosomal dominant, sex-linked
In an autosomal recessive disorder, disease appears when which allele pairing occurs?
One normal allele masks one recessive
Two different dominant diseased alleles
One dominant and one recessive allele
Two recessive diseased alleles partner
Which notation represents a homozygous genotype for recessive sickle cell genes as described?
Dd indicates one diseased allele
dd indicates two diseased alleles
dD indicates dominant diseased allele
DD indicates two normal alleles
What immediate molecular consequence follows from inheriting two recessive sickle cell alleles?
Production of abnormally shaped hemoglobin molecules
Overproduction of normal hemoglobin subunits
Deletion of all hemoglobin gene expression
Formation of round red blood cells with extra Hgb
Why do sickled RBCs contribute to anemia according to the material?
They bind excess oxygen and nitric oxide
They increase viscosity causing hypertension
They divide faster and dilute plasma
They deform and are destroyed more easily
Which phenotype corresponds to the ss genotype for the sickle cell disease discussed?
Improved endurance due to high Hgb
Normal oxygen transport capacity
Carrier status without clinical signs
Presence of disease signs and symptoms
Shortness of breath in sickle cell anemia primarily results from which pathophysiology?
Pulmonary edema from left heart failure
Hyperventilation causing respiratory alkalosis
Bronchial constriction from allergic mediators
Decreased oxygen delivery due to fewer RBCs
Which terminology clarification is correct from the content?
The suffix emia means in the blood
Anemia means increased numbers of RBCs
Allele big letter indicates diseased gene
Hgb molecules per RBC are fewer than five
During fertilization, how can an offspring obtain the ss genotype described?
Acquiring a somatic mutation after birth
Inheriting a sex-linked mutation on the X chromosome
Receiving a dominant normal allele from either parent
Receiving recessive mutated Hgb genes from both parents
Which mechanism most directly explains ischemic pain in joints during sickle cell crises?
Excess oxygen delivery to distal tissues
Direct hemolysis of synovial fluid cells
Capillary clogging by deformed RBCs
Autoimmune attack on joint cartilage
Deformed hemoglobin in sickle cell disease primarily fails to perform which function?
Carry usual numbers of O2 molecules
Maintain normal plasma osmolarity
Catalyze carbonic anhydrase reactions
Produce erythropoietin in kidneys
A person with genotype Dd for hemoglobin genes is best described as
Heterozygous carrier without disease
Homozygous diseased individual
Homozygous normal individual
Compound heterozygote with disease
Which statement about carriers of the sickle cell gene is accurate?
They may pass the gene to offspring
They cannot have children
They always develop severe S&S
They cannot produce normal hemoglobin
Sickle cell trait refers to individuals who
Have genotype Dd with mild S&S
Have genotype dd with severe S&S
Have mosaicism of red cells only
Have genotype DD with no S&S
In autosomal dominant disorders, which allele determines the phenotype?
Mutated diseased dominant allele
Normal recessive allele
Codominant silent allele
Mitochondrial maternal allele
Which description best contrasts autosomal dominant with autosomal recessive inheritance?
Sex-linked transmission via X chromosome
Dominant diseased gene overrides normal
Two recessive diseased genes required
Penetrance equals expressivity always
In polycystic kidney disease (PKD), the mutated gene
Acts only when paired with another mutant
Codes for abnormal kidney tissue
Enhances normal nephron repair
Suppresses cyst formation entirely
Why can PKD manifest even when paired with a normal allele?
Both alleles are recessive and weak
Mitochondrial inheritance overrides nuclear
Normal allele is always silenced epigenetically
Mutant dominant allele overrides coding
A likely long-term complication of PKD as a person ages is
Kidney failure due to cysts
Resolution of cysts spontaneously
Improved glomerular filtration
Increased erythropoietin levels
Which genotype would express polycystic kidney disease (PKD) if “P” denotes the disease allele?
pp homozygous recessive
PP homozygous dominant
pp or Pp together
pp with Y allele in males
Which statement best describes a person with genotype pp when “P” denotes PKD?
They would have a dominant phenotype
They would not have the disease
They would have PKD symptoms
They would be a male carrier
Which sign or symptom is listed for PKD?
Pulmonary edema
Hyperthyroidism
Hematuria and proteinuria
Skin rashes
Where is pain commonly reported in PKD?
Suprapubic region
Costovertebral angles
Right lower quadrant
Epigastric area
Which statement about normal X chromosome physiology in females is accurate?
Both X chromosomes carry identical genes
Each gene on one X has a partner on the other X
One X never pairs with the other X
Genes on X do not code for the same traits
What is true about X chromosomes in males?
Genes on X have a partner allele on Y
X and Y are autosomal homologs
Y carries a dominant matching gene set
Genes on X usually lack a comparable allele on Y
Which notation correctly represents a heterozygous female for an X-linked trait?
XI XI
XL Y
XL XI
XI Y
Which category do most sex-linked diseases fall under?
X-linked recessive conditions
Y-linked dominant conditions
X-linked dominant conditions
Autosomal recessive conditions
Why do females with one diseased recessive gene on X often avoid having the disease?
Mitochondrial genes override X-linked traits
The Y chromosome compensates
A normal dominant gene on the other X protects
Autosomal genes mask X-linked alleles
Why are males more likely to express X-linked recessive disorders?
They have two X chromosomes
They carry protective autosomal alleles
They inactivate their single X chromosome
They have no matching allele on another X
Which example is given for an X-linked disorder?
Cystic fibrosis
Phenylketonuria
Hemophilia
Sickle-cell disease
Which statement best defines recombinant DNA in genetic engineering?
New DNA combining sequences from different sources
Endogenous DNA expressed after epigenetic changes
Chromosomal DNA duplicated during replication
DNA formed by natural evolution of mutations
Which current application correctly matches recombinant DNA with its product?
tPA produced endogenously during MI
Human growth hormone released by pituitary donors
Exogenous insulin synthesized by engineered bacteria
Factor VIII synthesized by hepatocytes naturally
Hemophilia is described as X-linked. Which genotype would express the disease?
Xh Y in males
XH Y in males
Xh XH in females
Xh Xh in females
Mutations in genes coding coagulation factors can lead to what outcome?
Stronger collagen in vessel walls
Increased fibrinolysis by tPA
Defective factor causing altered clotting
Enhanced platelet plug formation
In myocardial infarction, why are tPA and tenecteplase administered?
To lyse the obstructing clot and restore flow
To strengthen coronary artery endothelial cells
To suppress platelet production in bone marrow
To block thrombin synthesis in the liver
Which concept primarily drives fluid shifts between body compartments?
Variations solely in natriuretic peptide levels
Exclusive changes in tonicity of plasma
Alterations in osmolality and oncotic pressure
Only hydrostatic pressure differences
Which substance alteration directly affects acid–base balance and cellular processes?
Sodium only in extracellular fluid
Hydrogen and bicarbonate concentrations
Magnesium exclusively in mitochondria
Oxygen levels independent of metabolism
Which cellular pathway represents an alternate to normal metabolism?
Aerobic glycolysis during fasting
Anaerobic metabolism with lactic acid production
Gluconeogenesis in well-fed state
Oxidative phosphorylation without oxygen
Which clinical state reflects fluid overload due to ADH dysregulation?
Hyperpolarized membranes increasing excitability
Metabolic alkalosis from bicarbonate loss
SIADH causing water retention
Diabetes insipidus with dilute urine
Hyperpolarization of the plasma membrane most likely results from which ionic change?
Increased intracellular potassium concentration
Decreased intracellular chloride movement
Enhanced sodium influx during depolarization
Greater efflux of potassium from the cell
Which statement best describes homeostasis at the cellular metabolic level?
A permanent balance independent of oxygen
A sudden shift when ATP is abundant
An ongoing fine-tuning to maintain equilibrium
A constant state without adjustments
Which disruption most directly decreases ATP production in cells?
Mild increase in body temperature
Enhanced glycolysis backup pathway
Reduced oxygen availability to mitochondria
Improved fluid distribution across tissues
What is the primary consequence when hypoxia interrupts electron transport chain function?
Shift toward reliance on glycolysis for ATP
Increase in oxidative phosphorylation rate
Expansion of mitochondrial inner membrane surface
Immediate normalization of ATP levels
Which example illustrates that cellular abnormalities rarely occur in isolation?
Isolated electrolyte change with instant recovery
Minor vitamin excess improving ATP generation
Bacterial damage leading to cascading metabolic issues
Single mutation causing no downstream effects
Which etiology is categorized under nutritional problems affecting cellular metabolism?
Decreased vitamin availability for enzymatic reactions
Balanced acid–base status in extracellular fluid
Enhanced electrical function of neuron membranes
Increased partial pressure of oxygen in alveoli
Which statement best characterizes the relationship between cellular-level disruptions and ATP?
Disruptions typically increase ATP synthesis
Disruptions often cause or are caused by decreased ATP
ATP decline is reversible within seconds always
ATP levels are unaffected by oxygen changes
Which alteration is primarily associated with solute status changes?
Rapid vitamin storage in hepatic tissue
Enhanced mitochondrial biogenesis in muscle
Improved glucose uptake during fasting
Electrical problems secondary to electrolyte imbalance
Which scenario most likely triggers lactic acidosis in cells?
Persistent hypoxia forcing anaerobic glycolysis
Adequate oxygen enabling oxidative phosphorylation
Stable mitochondrial function during rest
High ATP availability reducing glycolytic rate
Which description fits a backup metabolic plan when normal glucose use is impaired?
Permanent cessation of ATP production processes
Temporary use of alternative pathways like glycolysis
Direct conversion of oxygen into ATP molecules
Immediate increase in oxidative phosphorylation
Which factor contributes to difficulty returning to equilibrium during serious metabolic disruptions?
Electrolyte balance becomes perfectly maintained
Provision of ATP for body needs is compromised
Oxygen delivery uniformly increases during illness
Redundant ATP production pathways always compensate
Which statement best explains why cells rely on glycolysis during hypoxia?
Mitochondria produce more ATP when oxygen is absent
Glycolysis operates during both aerobic and anaerobic conditions
Aerobic enzymes become more efficient without oxygen
Oxidative phosphorylation accelerates in low oxygen states
In anaerobic glycolysis, how many ATP molecules are produced per molecule of glucose?
Eight ATP per glucose
One ATP per glucose
Two ATP per glucose
Four ATP per glucose
Why is anaerobic glycolysis described as a temporary stop-gap measure?
It increases oxygen delivery to mitochondria quickly
It eliminates lactic acid accumulation entirely
It provides minimal ATP until oxygen availability improves
It permanently restores aerobic metabolism
Which metabolic consequence directly contributes to acidosis during hypoxia?
Accumulation of pyruvic acid from repeated glycolysis
Excess oxygen binding to hemoglobin
Enhanced bicarbonate production by kidneys
Increased alkalinity from vitamin metabolism
Which cellular function becomes impaired when ATP is deficient due to hypoxia?
Na/K pump maintaining electrical membrane status
Endocytosis of large proteins by lysosomes
DNA replication timing in the nucleus
Collagen synthesis in extracellular matrix
What is a key physiologic principle about normal metabolic byproducts and blood pH?
Byproducts are strongly alkaline and raise pH
Byproducts are slightly more acidic than alkaline
Byproducts are variable and mostly alkaline
Byproducts are neutral and do not affect pH
What blood pH range is emphasized as the desirable normal range?
7.55 to 7.75
7.35 to 7.45
7.00 to 7.20
6.35 to 6.75
Which change in acid/base balance is highlighted as dangerous during hypoxia?
Respiratory alkalosis from hyperventilation
Metabolic alkalosis from excess bicarbonate
Metabolic acidosis from pyruvate accumulation
Respiratory acidosis from elevated CO2 alone
Which statement about glucose in cellular metabolism is accurate?
Glucose is unnecessary when vitamins are abundant
Glucose is stored directly as small usable molecules
Glucose is obtained from carbohydrates to start ATP pathways
Glucose is primarily a structural polysaccharide
Why are vitamins referred to as support staff in metabolism?
They neutralize all acidic byproducts in blood
They directly replace oxygen in mitochondria
They facilitate enzymes within metabolic pathways
They store ATP for later cellular use
