BIOL122 HUMAN BIOLOGICAL SCIENCE 2
FINAL EXAM COMPREHENSIVE REVIEW |
100 QUESTIONS AND ANSWERS UPDATED
2026/2027 | DETAILED RATIONALES
This is an original exam-style practice resource based on the BIOL122 Human
Biological Science 2 topics named in your request. It is not an official Australian
Catholic University examination or reproduced answer key.
INTRODUCTION
The BIOL122 Human Biological Science 2 Final Exam Comprehensive Review is
designed as a high-level revision resource for students consolidating human
pathophysiology, pharmacology, physiological regulation, disease mechanisms, and
clinical application. The questions are deliberately written at an advanced, scenario-
based level so that students must interpret physiological changes, connect molecular
mechanisms with clinical manifestations, and distinguish appropriate explanations
from plausible but incorrect alternatives. Particular emphasis is placed on integrated
understanding of respiratory and metabolic disorders, including asthma and type 2
diabetes, together with medication mechanisms, adverse effects, homeostatic
responses, and interpretation of evidence. The question bank also incorporates clinical
reasoning and scientific-literacy skills relevant to case-study and assessment work.
Working through these questions can help identify gaps in understanding, strengthen
application of concepts to unfamiliar scenarios, and improve the ability to justify
answers using physiological mechanisms. Students should use the rationales actively:
rather than memorising the answer letter, focus on why each option succeeds or fails
under the conditions described.
CORE DOMAINS TESTED
1.
Respiratory physiology — ventilation, gas exchange, airway resistance, V/Q
relationships, oxygen and carbon dioxide transport.
2.
3.
Asthma pathophysiology — allergic inflammation, bronchoconstriction,
airway hyperresponsiveness, mucus production, remodelling and
exacerbations.
4.
1
, 5.
Asthma pharmacology — bronchodilators, corticosteroids, leukotriene
pathways, inhaler technique and treatment principles.
6.
7.
Endocrine and metabolic physiology — insulin, glucagon, glucose
regulation, hepatic metabolism and homeostasis.
8.
9.
Type 2 diabetes pathophysiology — insulin resistance, β-cell dysfunction,
hyperglycaemia and metabolic complications.
10.
11.
Diabetes pharmacology — major glucose-lowering drug classes, mechanisms,
adverse effects and therapeutic reasoning.
12.
13.
Acute and chronic complications — hypoglycaemia, hyperosmolar states,
nephropathy, neuropathy, retinopathy and cardiovascular disease.
14.
15.
Integrated disease mechanisms — interactions between respiratory disease,
metabolic disease, inflammation and medication effects.
16.
17.
Homeostasis and clinical reasoning — feedback mechanisms and
interpretation of physiological disturbances.
18.
19.
Evidence-based scientific communication — critical appraisal, source
quality, association versus causation, citation and presentation of biological
mechanisms.
20.
2
,QUESTIONS 1-100
Q1: A patient with allergic asthma inhales an environmental
allergen and develops wheezing within minutes. Which
mechanism most directly explains the rapid
bronchoconstriction?
A) Increased erythropoietin secretion
B) IgE-mediated mast-cell activation and mediator release
C) Reduced renal sodium reabsorption
D) Increased pancreatic insulin secretion
Rationale: The correct answer is B because allergen exposure can cross-link IgE
bound to mast cells, triggering release of mediators such as histamine and
leukotrienes that promote bronchoconstriction. Option A is unrelated to acute airway
narrowing. Option C concerns renal regulation rather than allergic airway responses.
Option D concerns glucose regulation and does not directly initiate
bronchoconstriction.
Q2: A person with asthma has airway inflammation, bronchial
smooth-muscle contraction and increased mucus secretion
simultaneously. What is the most likely overall effect on
airflow?
A) Increased airway radius and reduced resistance
B) Markedly increased airway resistance and reduced expiratory flow
C) Increased alveolar compliance with unrestricted airflow
D) Increased pulmonary perfusion with no effect on ventilation
Rationale: The correct answer is B because airway narrowing from smooth-muscle
contraction, oedema and mucus substantially increases resistance, particularly
during expiration. Option A describes the opposite mechanical effect. Option C does
not account for the conducting-airway obstruction. Option D describes perfusion
rather than the primary ventilatory consequence.
Q3: A patient with asthma has a reduced FEV₁ /FVC ratio that
improves substantially after a bronchodilator. Which
interpretation is most appropriate?
A) Fixed restrictive disease
B) Reversible obstructive airflow limitation
C) Isolated pulmonary vascular disease
D) Complete failure of gas diffusion
Rationale: The correct answer is B because a reduced FEV₁/FVC ratio indicates
obstructive airflow limitation, while substantial bronchodilator responsiveness
3
, supports reversibility. Option A would generally involve reduced lung volumes rather
than this characteristic reversible obstruction. Option C does not explain the
spirometric pattern. Option D concerns diffusion across the alveolar-capillary
membrane and is not established by bronchodilator responsiveness.
Q4: During an asthma exacerbation, mucus plugs obstruct
several small bronchioles. Blood continues to flow through
the corresponding pulmonary capillaries. Which abnormality is
most likely?
A) High V/Q regions caused by excessive ventilation
B) Low V/Q regions caused by inadequate ventilation relative to perfusion
C) Complete absence of pulmonary perfusion
D) Increased systemic vascular resistance
Rationale: The correct answer is B because perfusion continues while ventilation falls,
producing low V/Q regions. Option A reverses the relationship. Option C is not
implied by mucus obstruction. Option D concerns systemic circulation and does not
explain the pulmonary gas-exchange disturbance.
Q5: Why can severe airway narrowing disproportionately impair
expiration in asthma?
A) The intrathoracic airways become less compressed during expiration
B) Positive intrathoracic pressure can further narrow already compromised
airways during forced expiration
C) Expiration requires substantially more oxygen than inspiration
D) Alveolar blood flow stops during expiration
Rationale: The correct answer is B because positive intrathoracic pressure during
forced expiration can compress narrowed intrathoracic airways, limiting expiratory
flow. Option A is opposite to the relevant mechanical effect. Option C is not the
explanation for expiratory limitation. Option D is incorrect because pulmonary blood
flow continues during expiration.
Q6: A patient uses an inhaled corticosteroid regularly and
develops recurrent oral candidiasis. Which explanation is
most appropriate?
A) Increased systemic insulin secretion
B) Local corticosteroid-associated suppression of oropharyngeal immune defence
C) Increased pulmonary surfactant degradation
D) Increased renal glucose filtration
Rationale: The correct answer is B because corticosteroid deposited in the mouth can
locally suppress immune responses and facilitate Candida overgrowth. Option A
concerns endocrine physiology. Option C does not explain oral candidiasis. Option D
is unrelated to the local fungal infection.
4
FINAL EXAM COMPREHENSIVE REVIEW |
100 QUESTIONS AND ANSWERS UPDATED
2026/2027 | DETAILED RATIONALES
This is an original exam-style practice resource based on the BIOL122 Human
Biological Science 2 topics named in your request. It is not an official Australian
Catholic University examination or reproduced answer key.
INTRODUCTION
The BIOL122 Human Biological Science 2 Final Exam Comprehensive Review is
designed as a high-level revision resource for students consolidating human
pathophysiology, pharmacology, physiological regulation, disease mechanisms, and
clinical application. The questions are deliberately written at an advanced, scenario-
based level so that students must interpret physiological changes, connect molecular
mechanisms with clinical manifestations, and distinguish appropriate explanations
from plausible but incorrect alternatives. Particular emphasis is placed on integrated
understanding of respiratory and metabolic disorders, including asthma and type 2
diabetes, together with medication mechanisms, adverse effects, homeostatic
responses, and interpretation of evidence. The question bank also incorporates clinical
reasoning and scientific-literacy skills relevant to case-study and assessment work.
Working through these questions can help identify gaps in understanding, strengthen
application of concepts to unfamiliar scenarios, and improve the ability to justify
answers using physiological mechanisms. Students should use the rationales actively:
rather than memorising the answer letter, focus on why each option succeeds or fails
under the conditions described.
CORE DOMAINS TESTED
1.
Respiratory physiology — ventilation, gas exchange, airway resistance, V/Q
relationships, oxygen and carbon dioxide transport.
2.
3.
Asthma pathophysiology — allergic inflammation, bronchoconstriction,
airway hyperresponsiveness, mucus production, remodelling and
exacerbations.
4.
1
, 5.
Asthma pharmacology — bronchodilators, corticosteroids, leukotriene
pathways, inhaler technique and treatment principles.
6.
7.
Endocrine and metabolic physiology — insulin, glucagon, glucose
regulation, hepatic metabolism and homeostasis.
8.
9.
Type 2 diabetes pathophysiology — insulin resistance, β-cell dysfunction,
hyperglycaemia and metabolic complications.
10.
11.
Diabetes pharmacology — major glucose-lowering drug classes, mechanisms,
adverse effects and therapeutic reasoning.
12.
13.
Acute and chronic complications — hypoglycaemia, hyperosmolar states,
nephropathy, neuropathy, retinopathy and cardiovascular disease.
14.
15.
Integrated disease mechanisms — interactions between respiratory disease,
metabolic disease, inflammation and medication effects.
16.
17.
Homeostasis and clinical reasoning — feedback mechanisms and
interpretation of physiological disturbances.
18.
19.
Evidence-based scientific communication — critical appraisal, source
quality, association versus causation, citation and presentation of biological
mechanisms.
20.
2
,QUESTIONS 1-100
Q1: A patient with allergic asthma inhales an environmental
allergen and develops wheezing within minutes. Which
mechanism most directly explains the rapid
bronchoconstriction?
A) Increased erythropoietin secretion
B) IgE-mediated mast-cell activation and mediator release
C) Reduced renal sodium reabsorption
D) Increased pancreatic insulin secretion
Rationale: The correct answer is B because allergen exposure can cross-link IgE
bound to mast cells, triggering release of mediators such as histamine and
leukotrienes that promote bronchoconstriction. Option A is unrelated to acute airway
narrowing. Option C concerns renal regulation rather than allergic airway responses.
Option D concerns glucose regulation and does not directly initiate
bronchoconstriction.
Q2: A person with asthma has airway inflammation, bronchial
smooth-muscle contraction and increased mucus secretion
simultaneously. What is the most likely overall effect on
airflow?
A) Increased airway radius and reduced resistance
B) Markedly increased airway resistance and reduced expiratory flow
C) Increased alveolar compliance with unrestricted airflow
D) Increased pulmonary perfusion with no effect on ventilation
Rationale: The correct answer is B because airway narrowing from smooth-muscle
contraction, oedema and mucus substantially increases resistance, particularly
during expiration. Option A describes the opposite mechanical effect. Option C does
not account for the conducting-airway obstruction. Option D describes perfusion
rather than the primary ventilatory consequence.
Q3: A patient with asthma has a reduced FEV₁ /FVC ratio that
improves substantially after a bronchodilator. Which
interpretation is most appropriate?
A) Fixed restrictive disease
B) Reversible obstructive airflow limitation
C) Isolated pulmonary vascular disease
D) Complete failure of gas diffusion
Rationale: The correct answer is B because a reduced FEV₁/FVC ratio indicates
obstructive airflow limitation, while substantial bronchodilator responsiveness
3
, supports reversibility. Option A would generally involve reduced lung volumes rather
than this characteristic reversible obstruction. Option C does not explain the
spirometric pattern. Option D concerns diffusion across the alveolar-capillary
membrane and is not established by bronchodilator responsiveness.
Q4: During an asthma exacerbation, mucus plugs obstruct
several small bronchioles. Blood continues to flow through
the corresponding pulmonary capillaries. Which abnormality is
most likely?
A) High V/Q regions caused by excessive ventilation
B) Low V/Q regions caused by inadequate ventilation relative to perfusion
C) Complete absence of pulmonary perfusion
D) Increased systemic vascular resistance
Rationale: The correct answer is B because perfusion continues while ventilation falls,
producing low V/Q regions. Option A reverses the relationship. Option C is not
implied by mucus obstruction. Option D concerns systemic circulation and does not
explain the pulmonary gas-exchange disturbance.
Q5: Why can severe airway narrowing disproportionately impair
expiration in asthma?
A) The intrathoracic airways become less compressed during expiration
B) Positive intrathoracic pressure can further narrow already compromised
airways during forced expiration
C) Expiration requires substantially more oxygen than inspiration
D) Alveolar blood flow stops during expiration
Rationale: The correct answer is B because positive intrathoracic pressure during
forced expiration can compress narrowed intrathoracic airways, limiting expiratory
flow. Option A is opposite to the relevant mechanical effect. Option C is not the
explanation for expiratory limitation. Option D is incorrect because pulmonary blood
flow continues during expiration.
Q6: A patient uses an inhaled corticosteroid regularly and
develops recurrent oral candidiasis. Which explanation is
most appropriate?
A) Increased systemic insulin secretion
B) Local corticosteroid-associated suppression of oropharyngeal immune defence
C) Increased pulmonary surfactant degradation
D) Increased renal glucose filtration
Rationale: The correct answer is B because corticosteroid deposited in the mouth can
locally suppress immune responses and facilitate Candida overgrowth. Option A
concerns endocrine physiology. Option C does not explain oral candidiasis. Option D
is unrelated to the local fungal infection.
4
