PARCIAL III BIOCEL
Quiz
•
Health Sciences
•
University
•
Practice Problem
•
Hard
JOSE PALMA
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60 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la fase del ciclo celular donde ocurre la replicación del ADN?
Fase G1
Fase G2
Fase M
Fase S
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué función cumple el punto de control G2/M del ciclo celular?
Controlar el tamaño celular antes de entrar en G1
Verificar que los orgánulos se hayan duplicado
Asegurar que el ADN esté completamente replicado
Activar la anafase durante la mitosis
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué proteínas son necesarias para activar las quinasas dependientes de ciclinas (Cdk)?
Fosfatasas
Ribosomas
Centrosomas
Ciclinas
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué tipo de señalización celular utiliza neurotransmisores en sinapsis?
Endocrina
Paracrina
Sináptica
Autocrina
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué clase de ciclinas activan a Cdk justo al entrar a fase S?
Ciclinas G1/S
Ciclinas S
Ciclinas M
Ciclinas G1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué caracteriza a los receptores nucleares activados por ligandos como cortisol?
Son proteínas transmembrana
Modulan la transcripción génica
Forman canales iónicos
Liberan segundos mensajeros
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de los siguientes ejemplos corresponde a señalización autocrina?
Hormona tiroidea actuando sobre el hígado
Noradrenalina en sinapsis
Células tumorales que se estimulan a sí mismas
Vasopresina circulando en sangre
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