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ENADE Biomedicina is Brazil's mandatory national capstone examination for graduating Biomedical Sciences (Biomedicina) students administered by INEP/MEC. Spanning 4 hours with 40 questions (10 Formação Geral and 30 Componente Específico), it evaluates clinical biochemistry, hematology, immunology, medical microbiology, parasitology, cytopathology, molecular diagnostics, toxicology, and SUS healthcare principles. Note: This resource is an English-language MCQ study adaptation.
Sample ENADE Biomedicina Practice Questions
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1The Brazilian Federal Constitution of 1988 established health as a fundamental human right and a duty of the State, creating the Unified Health System (*Sistema Único de Saúde* — SUS). Regulated by Federal Law nº 8.080/1990, SUS is structured upon foundational doctrinal and organizational principles. Which principle ensures that all Brazilian citizens have equal access to health services at all levels of complexity without discrimination or financial barrier?
A.Universalidade (Universality)
B.Descentralização (Decentralization)
C.Regionalização (Regionalization)
D.Participação da Comunidade (Community Participation)
Explanation: Universalidade (Universality) is the core doctrinal principle of SUS establishing that healthcare is a universal right for every person within Brazilian territory, guaranteeing unhindered access to health actions and services across all levels of care. Under Lei nº 8.080/1990, the State is legally mandated to provide preventive, diagnostic, and curative services without distinction of socioeconomic status, employment, or nationality.
2Federal Law nº 8.142/1990 mandates social participation (*controle social*) and intergovernmental financial transfers within SUS. According to this law, which collegiate body functions on a permanent and deliberative basis in every municipality, state, and federal sphere, with parity representation ensuring 50% civil society users (*usuários*)?
A.Conferência de Saúde (Health Conference)
B.Conselho de Saúde (Health Council)
C.Comissão Intergestores Bipartite (CIB)
D.Conselho Nacional de Secretários de Saúde (CONASS)
Explanation: The Health Council (*Conselho de Saúde*) is a permanent and deliberative collegiate body established at municipal, state, and national levels under Lei nº 8.142/1990. It is tasked with formulating strategies and overseeing the execution of health policies, including economic and financial aspects, maintaining a parity composition where 50% of members represent healthcare users, 25% health workers, and 25% government/service providers.
3An epidemiological case-control study was conducted in a Brazilian metropolitan center to investigate the association between occupational exposure to organic laboratory solvents and the development of acute myeloid leukemia (AML). The study included 100 AML patients (cases) and 200 matched healthy controls. Among the cases, 40 had a history of chronic solvent exposure. Among the controls, 30 had chronic solvent exposure. What is the Odds Ratio ($OR$) for this association?
A.1.33
B.2.25
C.3.78
D.0.26
Explanation: In a case-control study, the Odds Ratio is calculated as $OR = \frac{a \times d}{b \times c}$. Here, cases exposed ($a$) = 40, cases unexposed ($c$) = 100 - 40 = 60; controls exposed ($b$) = 30, controls unexposed ($d$) = 200 - 30 = 170. Thus, $OR = \frac{40 \times 170}{30 \times 60} = \frac{6800}{1800} \approx 3.78$, indicating that individuals with chronic solvent exposure have 3.78 times higher odds of developing AML compared to unexposed individuals.
4A new immunochromatographic rapid test for Dengue NS1 antigen was evaluated in an endemic Brazilian municipality with a disease prevalence of 20%. In analytical validation trials, the test demonstrated a Sensitivity of 90% and a Specificity of 95%. When applied to a screening population of 1,000 symptomatic individuals, what is the Positive Predictive Value ($PPV$) of this diagnostic test?
A.75.5%
B.90.0%
C.95.0%
D.81.8%
Explanation: In a population of 1,000 with 20% prevalence, true infected patients = 200 and uninfected individuals = 800. True Positives ($TP$) = $200 \times 0.90 = 180$. False Positives ($FP$) = $800 \times (1 - 0.95) = 40$. The Positive Predictive Value is $PPV = \frac{TP}{TP + FP} = \frac{180}{180 + 40} = \frac{180}{220} \approx 0.818$ or $81.8\%$.
5According to the Code of Ethics of the Biomedical Professional (*Código de Ética do Biomédico*) established by the Federal Council of Biomedicine (CFBM), which of the following practices constitutes an explicit ethical infraction subject to disciplinary sanction?
A.Publicly advertising guaranteed clinical outcomes or therapeutic success for aesthetic and biomedical procedures
B.Exercising technical responsibility for a licensed clinical analysis laboratory registered with the Regional Council of Biomedicine (CRBM)
C.Refusing to perform biomedical acts that conflict with professional conscience or legal biosafety standards
D.Publishing scientific data derived from research projects previously approved by a CEP/CONEP Institutional Review Board
Explanation: Under the CFBM Code of Ethics, biomedical scientists are strictly prohibited from promising, guaranteeing, or advertising infallible clinical or aesthetic outcomes, as biological responses are inherently multifactorial. Commercial sensationalism and misleading publicity constitute serious disciplinary infractions.
6Clinical diagnostic laboratories handling biological agents are classified into Biosafety Levels (*Níveis de Biossegurança* — NB-1 to NB-4) based on hazard severity and transmission mode. A reference laboratory handling cultures of *Mycobacterium tuberculosis* and *Bacillus anthracis* requires containment protocols including negative directional airflow, HEPA filtration of exhaust air, and controlled access. Which Biosafety Level is mandated for these pathogens?
A.Biosafety Level 2 (NB-2 / BSL-2)
B.Biosafety Level 3 (NB-3 / BSL-3)
C.Biosafety Level 1 (NB-1 / BSL-1)
D.Biosafety Level 4 (NB-4 / BSL-4)
Explanation: Biosafety Level 3 (NB-3) is required for clinical and diagnostic work involving Risk Group 3 indigenous or exotic biological agents transmitted via aerosols that can cause severe, potentially fatal systemic infections (such as *Mycobacterium tuberculosis*, *Bacillus anthracis*, and Yellow Fever virus). NB-3 containment mandates negative differential room air pressure, HEPA filtration, and Class II/III biosafety cabinets.
7A biomedical laboratory technician is preparing a work area for processing infectious clinical respiratory samples suspected of harboring respiratory viruses. The technician must choose between a Class II Biological Safety Cabinet (BSC / *Cabine de Segurança Biológica*) and a horizontal laminar flow clean bench. Which statement correctly distinguishes their containment capabilities?
A.Horizontal laminar flow benches provide superior personal operator protection compared to Class II BSCs because the air stream pushes biohazardous aerosols away from the work surface.
B.Class II BSCs recirculate 100% of unfiltered room air across the operator's breathing zone, making them unsuitable for bacterial handling.
C.Class II BSCs protect the operator, the environment, and the sample via vertical laminar airflow and HEPA exhaust filtration, whereas horizontal laminar flow benches blow air directly toward the operator and must never be used with infectious biohazards.
D.Both devices provide identical personnel and environmental containment and can be used interchangeably for viral diagnostics.
Explanation: Class II Biological Safety Cabinets (BSCs) provide triple protection (personnel, product, and environment) by drawing an inward air curtain (front intake grille) and filtering both recirculated and exhausted air through HEPA filters. Conversely, horizontal laminar flow clean benches blow HEPA-filtered air across the work surface straight into the operator's face, protecting only the product; using them for infectious pathogens poses an extreme biohazard.
8According to ANVISA Resolution RDC nº 222/2018 regulating the Health Services Waste Management Plan (*Plano de Gerenciamento de Resíduos de Serviços de Saúde* — PGRSS), sharps such as needles, scalpel blades, glass ampoules, and lancets belong to which waste group and must be discarded into which specific container?
A.Group A — white milky plastic bags bearing the infectious substance symbol
B.Group B — orange containers dedicated exclusively to heavy metal hazardous chemicals
C.Group D — blue plastic bags intended for standard recyclable municipal solid waste
D.Group E — rigid, puncture-resistant, leak-proof containers bearing the international biohazard symbol
Explanation: Under ANVISA RDC nº 222/2018, Group E comprises all sharp and piercing items (*resíduos perfurocortantes*). They must be discarded immediately at the point of generation into rigid, puncture-resistant, leak-proof collection boxes (e.g., Descarpack) marked with the universal biohazard symbol and filled only up to the designated maximum fill line.
9In clinical research and evidence-based laboratory medicine, which epidemiological study design is considered the gold standard for establishing a direct causal relationship between a novel pharmacological intervention and therapeutic outcome while minimizing selection bias and confounding?
A.Randomized double-blind placebo-controlled clinical trial
B.Cross-sectional observational prevalence study (*estudo transversal*)
C.Retrospective hospital case series (*série de casos*)
D.Ecological correlation study (*estudo ecológico*)
Explanation: The randomized double-blind placebo-controlled clinical trial (RCT) is the gold standard for evaluating causal efficacy in clinical science. Random allocation distributes known and unknown confounders equally between experimental and control arms, while double-blinding eliminates observer and participant ascertainment bias.
10Under Brazilian bioethical regulations governed by National Health Council Resolution CNS nº 466/2012 (*Resolução CNS 466/2012*), any scientific research involving human subjects or human biological materials must obtain prior ethical approval from which institutional system before participant enrollment or sample collection?
A.CTNBio (Comissão Técnica Nacional de Biossegurança)
B.CEP/CONEP System (Comitê de Ética em Pesquisa / Comissão Nacional de Ética em Pesquisa)
C.CFBM (Conselho Federal de Biomedicina)
D.ANVISA Board of Directors (*Diretoria Colegiada*)
Explanation: Resolution CNS nº 466/2012 dictates that all research protocols involving human participants, their data, or biological samples in Brazil must be submitted via Plataforma Brasil and approved by an institutional Research Ethics Committee (CEP) and, when applicable, by the National Research Ethics Commission (CONEP) before initiation.
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