TCEC Advisory Olymptics

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BIOLOGY: Which is the true statement about the structure of DNA? Options: Double-stranded with nitrogen bases: guanine, cytosine, thymine, and uracil, Double-stranded with nitrogen bases: guanine, cytosine, thymine, and adenine, Single-stranded with nitrogen bases: guanine, cytosine, adenine, and uracil, Single-stranded with nitrogen bases: guanine, cytosine, thymine, and adenine

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Double-stranded with nitrogen bases: guanine, cytosine, thymine, and adenine

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BIOLOGY: What is the basic unit of life?

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cell

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BIOLOGY: What is the role of ribosomes in a cell?

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Protein synthesis

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BIOLOGY: Which correctly matches the macromolecules to its monomer? Protein: amino acid, Carbohydrate: monosaccharide or glucose, Lipid: glycerol and fatty acid, Carbohydrate: amino acid

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Protein: amino acid

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CHEMISTRY: What is the name of the following molecule?

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Magnesium chloride

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Spanish: ¿Dónde se celebra el Día de las Velitas?

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Colombia

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Spanish: How many countries have Spanish as an official language?

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21

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Spanish: ¿Cuándo es la independencia de México? Options: 5 de mayo, 16 de septiembre, 15 de octubre, 15 de septiembre

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16 de septiembre

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Spanish: ¿Costa Rica neighbors are...

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Panama and Nicaragua

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Spanish: Cómo se dice: siblings in Spanish?

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hermanos