What changed in the verified 2026 eligibility information?

The session-2026 notice allows candidates from age 17, with parental authorization at 17 and different section-specific age reference dates. Older ministry and recruitment-page summaries start at 18. Consult the current signed notice and EMS for all diploma, prior-enrollment, nationality, family-status and military medical requirements.

Are all four papers four hours long with coefficients 6, 6, 5 and 3?

Those current coefficients and universal durations were not established by the reviewed 2026 notice. A historical official SVT paper states four hours, which must not be copied to every subject or session. The current item count and fixed overall pass average are also unpublished in the reviewed sources.

Is this a French examination simulator?

No. It is an independent English-language MCQ study adaptation, not an official translation or format simulation. French micro-passages are retained for reading and argumentation skills, but complete French composition and scientific problem-solving need separate practice.

Does the bank reproduce official subject weightings?

No. The four subject names and S1/S2 level are official, but current percentage weights were not found. The 30/30/25/15 split describes only this focused practice subset, which does not cover the full secondary-school programme.

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Sample Concours EMS Dakar Practice Questions

Try these sample questions to review concepts for the Concours EMS Dakar exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 40+ question experience with AI tutoring.

1For a single gene with complete dominance, two heterozygous plants Rr are crossed. What dominant-to-recessive phenotypic ratio is expected?

A.1:1

B.3:1

C.1:2:1

D.9:7

Explanation: The cross produces RR, Rr, Rr and rr with equal probabilities. The first three express the dominant phenotype, giving a 3:1 phenotypic ratio.

2A test cross of a double heterozygote produces 420 grey-long, 410 black-vestigial, 85 grey-vestigial and 85 black-long offspring. Assuming the two common classes are parental combinations, what recombination frequency is observed?

A.8.5%

B.20.0%

C.17.0%

D.50.0%

Explanation: The recombinant classes total 85 + 85 = 170 among 1,000 offspring. Recombination frequency is therefore 170 / 1,000 × 100 = 17.0%.

3For a fully penetrant X-linked recessive trait, an affected father and a mother with two unaffected alleles have children. Ignoring new mutations, what outcome is expected?

A.All sons are affected and all daughters lack the allele

B.Half the sons are affected and half the daughters are affected

C.Every child is affected

D.All daughters inherit the father's affected allele and are unaffected carriers; sons do not inherit it from him

Explanation: A father gives his X chromosome to daughters and his Y chromosome to sons. Each daughter also receives an unaffected maternal X, while each son receives an unaffected maternal X.

4Under the standard ABO inheritance model, excluding rare variants, a type O mother and a type AB father have children. Which set contains all possible offspring blood types?

A.Type A or type B only

B.Type AB or type O only

C.Type A, type B, type AB and type O

D.Type AB only

Explanation: The mother has genotype ii and can supply only i, while the father can supply IA or IB. Their children therefore have genotype IAi or IBi, producing type A or type B rather than AB or O.

5In AaBb × AaBb with independent assortment, what fraction of offspring is homozygous at at least one of the two loci?

A.7/16

B.12/16

C.9/16

D.3/16

Explanation: The probability of being heterozygous at each locus is one-half, so the probability of being heterozygous at both is one-quarter. Its complement, homozygous at one or both loci, is 1 − 1/4 = 3/4 = 12/16.

6Which antibody class is normally transported across the human placenta to provide passive protection to the fetus?

A.IgM

B.IgA

C.IgG

D.IgE

Explanation: Maternal IgG is transported across the placenta and can protect the infant during early life. This is passive immunity because the antibodies were produced by the mother.

7A cytotoxic CD8 T cell recognizes a peptide displayed on an infected cell. Which presenting molecule is normally involved?

A.MHC class II

B.A secreted IgA molecule

C.A soluble complement protein

D.MHC class I

Explanation: CD8 T cells ordinarily recognize peptide-MHC class I complexes. This allows them to detect intracellular abnormalities reflected in peptides displayed at the cell surface.

8Which distinction best separates active from passive immunization?

A.Active immunization stimulates the recipient's response and memory; passive immunization supplies preformed antibodies

B.Active immunization supplies preformed antibodies; passive immunization induces memory

C.Both require the recipient to produce all protective antibodies before protection can begin

D.Both necessarily produce lifelong immune memory

Explanation: Active immunization exposes the immune system to antigen so it develops its own response. Passive immunization supplies antibodies and does not itself create antigen-specific memory in the recipient.

9Which ion movement mainly produces the rapid rising phase of a typical neuronal action potential?

A.Potassium moving out through voltage-gated channels

B.Sodium moving in through voltage-gated channels

C.Chloride moving into the cell

D.Sodium actively pumped out of the cell

Explanation: Opening of voltage-gated sodium channels allows inward sodium current that rapidly depolarizes the neuron. Potassium efflux is important in the subsequent return toward negative membrane voltage.

10At a chemical synapse, an action potential reaches the presynaptic terminal. Which event directly links depolarization to neurotransmitter release?

A.Opening of postsynaptic sodium channels before transmitter release

B.Breakdown of transmitter in the synaptic cleft

C.Calcium entry through presynaptic voltage-gated channels

D.Reuptake of transmitter into the presynaptic terminal

Explanation: Presynaptic depolarization opens voltage-gated calcium channels. The calcium signal triggers synaptic vesicle fusion and exocytosis of neurotransmitter.

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