Quiz — DS1-4S-20-21final.docx

Question 1 sur 10 20:00

[{"id":5006,"question":"Quel est le rôle principal des mitochondries dans une cellule ?","option_a":"A. Stockage des nutriments","option_b":"B. Production d'énergie (respiration cellulaire)","option_c":"C. Synthèse des protéines","option_d":"D. Transport des substances","option_e":"","option_f":"","bonne_reponse":"b","explication":"Les mitochondries sont les centrales énergétiques de la cellule, où se déroule la respiration cellulaire produisant de l'ATP.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. Stockage des nutriments\", \"b\": \"B. Production d'énergie (resp","_debug_options_count":4},{"id":5007,"question":"La loi de Boyle-Mariotte stipule que pour une quantité donnée de gaz à température constante, le volume est inversement proportionnel à la pression.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Cette loi est exacte : PV = constante (à température et quantité de gaz constantes).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":5008,"question":"Quelle est la formule chimique de l'eau ?","option_a":"A. H2O2","option_b":"B. CO2","option_c":"C. H2O","option_d":"D. NaCl","option_e":"","option_f":"","bonne_reponse":"c","explication":"La formule chimique de l'eau est H2O, composée de deux atomes d'hydrogène et d'un atome d'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"A. H2O2\", \"b\": \"B. CO2\", \"c\": \"C. H2O\", \"d\": \"D. NaCl\"}}","_debug_options_count":4},{"id":5009,"question":"La photosynthèse se déroule principalement dans :","option_a":"A. Les mitochondries","option_b":"B. Les chloroplastes","option_c":"C. Le noyau cellulaire","option_d":"D. Le réticulum endoplasmique","option_e":"","option_f":"","bonne_reponse":"b","explication":"Les chloroplastes, présents dans les cellules végétales, sont le siège de la photosynthèse.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. Les mitochondries\", \"b\": \"B. Les chloroplastes\", \"c\": \"C. Le n","_debug_options_count":4},{"id":5010,"question":"Un mouvement est dit uniformément accéléré si :","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Un mouvement est uniformément accéléré si son accélération est constante (variation de vitesse proportionnelle au temps).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":5011,"question":"Quelle est l'unité SI de la force ?","option_a":"A. Le joule","option_b":"B. Le newton","option_c":"C. Le watt","option_d":"D. Le pascal","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'unité SI de la force est le newton (N), défini comme kg·m·s⁻².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. Le joule\", \"b\": \"B. Le newton\", \"c\": \"C. Le watt\", \"d\": \"D. Le","_debug_options_count":4},{"id":5012,"question":"La réaction entre un acide et une base produit toujours :","option_a":"A. Un sel et de l'eau","option_b":"B. Un gaz","option_c":"C. Un métal","option_d":"D. Un oxyde","option_e":"","option_f":"","bonne_reponse":"a","explication":"Une réaction acido-basique produit toujours un sel et de l'eau (neutralisation).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"A. Un sel et de l'eau\", \"b\": \"B. Un gaz\", \"c\": \"C. Un métal\", \"d","_debug_options_count":4},{"id":5013,"question":"La loi de la gravitation universelle a été formulée par :","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Isaac Newton a formulé la loi de la gravitation universelle en 1687.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":5014,"question":"Quel est le pH d'une solution neutre à 25°C ?","option_a":"A. 0","option_b":"B. 7","option_c":"C. 14","option_d":"D. 10","option_e":"","option_f":"","bonne_reponse":"b","explication":"À 25°C, une solution neutre a un pH de 7 (concentration en ions H⁺ égale à 10⁻⁷ mol\/L).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. 0\", \"b\": \"B. 7\", \"c\": \"C. 14\", \"d\": \"D. 10\"}}","_debug_options_count":4},{"id":5015,"question":"La vitesse de propagation du son dans l'air est d'environ :","option_a":"A. 300 m\/s","option_b":"B. 340 m\/s","option_c":"C. 1500 m\/s","option_d":"D. 5000 m\/s","option_e":"","option_f":"","bonne_reponse":"b","explication":"Dans l'air à 20°C, la vitesse du son est d'environ 340 m\/s.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"A. 300 m\/s\", \"b\": \"B. 340 m\/s\", \"c\": \"C. 1500 m\/s\", \"d\": \"D. 5000","_debug_options_count":4}]