
BIOLOGÍA II
Authored by Carlos Xicay
Biology
12th Grade
Used 1+ times

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40 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La eliminación de los peroxisomas de una célula afectaría principalmente:
La síntesis proteica
La degradación de peróxidos y ácidos grasos
La respiración aerobia
El transporte de vesículas
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si una enzima digestiva es colocada en un ambiente con pH muy ácido fuera de su rango óptimo, probablemente:
Aumente su afinidad por el sustrato
Se vuelva más estable
Pierda su conformación terciaria
Rompa enlaces peptídicos
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
En la respiración celular, ¿cuál es el destino final de los electrones transportados por NADH y FADH₂?
CO₂
Oxígeno, formando H₂O
Glucosa
Piruvato
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La inhibición competitiva de una enzima puede revertirse mediante:
Disminución de temperatura
Aumento de inhibidor
Aumento de sustrato
Aumento de coenzima
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Una mutación puntual produce una proteína con estructura secundaria alterada. ¿Qué nivel de la estructura proteica fue afectado indirectamente?
Terciaria
Primaria
Cuaternaria
Peptídica
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál de los siguientes organismos no presenta mitocondrias, pero realiza respiración celular?
Algas verdes
Bacterias aerobias
Levaduras
Protozoarios
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Durante una reacción de fotosíntesis, la luz excita electrones en:
NADP⁺
Clorofila
ATP sintasa
Ribulosa
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