ANucleicos_04
Quiz
•
Biology
•
University
•
Practice Problem
•
Hard
Nelly Pacheco-Cruz
Used 2+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Los ácidos nucleicos pueden ser cuantificados midiendo su absorbancia a esta longitud de onda:
320 nm
280 nm
230 nm
260 nm
Answer explanation
La absorbancia se mide a 260 nm (A260), donde los ácidos nucleicos absorben la luz con mayor intensidad.
La cantidad de luz absorbida es proporcional a la cantidad de ácidos nucleicos en la muestra.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Al aumentar la temperatura las cadenas de ADN se separan y la absorbancia a 260 nm _______
aumenta
disminuye
no cambia
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En la estructura secundaria de tipo ADN-B, hay una vuelta en la doble hélice cada ____ nucleótidos.
3.5
100
4.5
10
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El contenido de G-C en el ADN de un organismo que vive a 90°C, probablemente será_________ con respecto a uno que vive a 32°C.
no tendrá pares G-C
igual
menor
mayor
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La secuencia de nucleótidos de la hebra molde NO determina la secuencia de nucleótidos de la hebra sintetizada durante la replicación del ADN
Verdadero
Falso
Answer explanation
La secuencia de nucleótidos de la hebra molde determina la secuencia de nucleótidos de la hebra sintetizada durante la replicación del ADN.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La enzima ADN ligasa:
introduce giros en la doble hélice
sintetiza los primers de ARN
une los extremos de dos fragmentos de ADN
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Después de la formación de la horquilla de replicación _____
una hebra se sintetiza de forma continua y la otra discontinua
ambas cadenas nuevas se sintetizan continuamente
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