
Sacharidy př.zk.
Authored by Renáta Pernikářová
Chemistry
11th Grade
Used 11+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kolik center chirality má molekula necyklické D - glukosy?
4
3
5
6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Čtyřuhlíkatých necyklických tetros a tetrulos (aldosa a ketosa) existuje celkem:
12
10
9
6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Určete počet stereoizomerů necyklických forem aldos a ketos, které mají ve své molekule pět atomů uhlíku:
6
12
10
16
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Enantiomerem D-glukosy je monosacharid, který se od D-glukosy odlišuje konfigurací:
na anomerním uhlíku
na všech chirálních atomech uhlíku
na čtvrtém nebo třetím chirálním uhlíku
jen na pátém (referenčním) uhlíku
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vyberte správný výrok o cyklických formách sacharidů. Tyto cyklické vznikají reakcí:
poloacetalového hydroxylu s hydroxylovou skupinou jiné molekuly
poloacetalového hydroxylu s hydroxylem jiné skupiny
karbonylu s hydroxylovou skupinou téže molekuly
karbonylu s hydroxylovou skupinou jiné molekuly
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kolik center chirality je v molekule α-D-glukopyranosy?
6
5
4
3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rozhodněte, která z cyklických forem je anomerem k α-D-glukopyranose:
α-D-mannopyranosa
α-L-glukopyranosa
β-D-glukopyranosa
α-D-glukofuranosa
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