Aminoacizi
Quiz
•
Chemistry
•
11th Grade
•
Hard
Ianculescu Florina
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Aminoacidul ce conţine cel mai mare număr de specii atomice este :
serina
cisteina
acid glutamic
lizină
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Referitor la legătură peptidica sunt corecte afirmaţiile cu excepţia:
este o legătura de tip amida
fiecare aminoacid dintr-o proteina este implicat in doua legături peptidice
nu este scindata in cursul procesului de denaturare
A. este scindata in cursul procesului de hidroliza
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O tetrapeptida are minimum:
5 atomi de azot
5 atomi de oxigen
5 atomi de carbon
5 atomi de hidrogen
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Următoarele grupări funcţionale nu se întâlnesc in structura aminoacizilor proteinogeni: nitro (1), cetonica (2), hidroxil (3), aminica (4), carboxil (5), esterica (6), tiolică (7) ?
1,2,3
2,4,6
3,4,5,6
1,2,6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Componenta obligatorie pentru o proteină este:
o catenă polipeptidică
un nemetal
un rest de acid carboxilic
un metal
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Doi moli de aspartil-glicil-valină consumă la hidroliză maxim:
2 moli apă
72 grame apă
36 grame apă
108 grame apă
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
La hidroliza totală a unei tripeptide se formează trei aminoacizi naturali monocarboxilici cu masele moleculare egale cu 75, respectiv 89 şi respectiv 121. Tripeptidă poate fi constituită din:
alanină, glicină, serină
valină, glicină, alanină
alanină, glicină, cisteină
lizină, glicină, alanină
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