BIO EXAMEN FINAL LABORATORIO
Quiz
•
Chemistry
•
University
•
Hard
Lindaura Callejas
Used 10+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
En la prueba de Biuret, reacciona el ión cobre con:
grupos carboxilo
radicales OH
grupos NH2
enlace peptídico
2.
MULTIPLE SELECT QUESTION
45 sec • 5 pts
Los reactivos de la prueba de Biuret son:
CuSO4
KOH
tartrato doble de sodio y potasio
NaOH
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
El resultado positivo de la prueba de Biuret se observa asì:
4.
MULTIPLE SELECT QUESTION
45 sec • 5 pts
En la determinación de azúcares reductores se emplean los siguientes reactivos
Na2SO4
CuSO4
tartrato doble de sodio y potasio
NaOH
5.
MULTIPLE SELECT QUESTION
45 sec • 5 pts
En la reacción de Fehling, ocurre una de estas reacciones
El monosacárido reductor se oxida
El ión Cu+2 se oxida a Cu +1
El hidroxi del monosacárido se reduce
El ión Cu+2 oxidante, se reduce a Cu+1
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Una reacción positiva de la prueba de Fehling es la siguiente:
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
En la reacción de la catalasa, el sustrato se llama:
sulfato de sodio
amilasa
agua
ninguno
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