Koji enzim katalizuje prvi i regulatorni korak biosinteze hema?

Hemoglobin

Quiz
•
Science
•
University
•
Easy
Ina Savic
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
δ-aminolevulinska dehidrataza
Uroporfirinogen III sintaza
Ferohelataza
ALA sintetaza
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koji je glavni razlog zašto olovo (Pb²⁺) izaziva anemiju?
Inhibira sintezu globinskih lanaca
Inhibira δ-aminolevulinsku dehidratazu i ferohelatazu
Smanjuje apsorpciju gvožđa u organizam
Povećava razgradnju eritrocita u slezini
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koji oblik hemoglobina pokazuje najviši afinitet za kiseonik?
HbA
HbA2
HbF
HbCO
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Haldane-ov efekat objašnjava uticaj _______ na krivu disocijacije hemoglobina.
2,3-BPG
CO2
O2
pH
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja izjava o Bohr-ovom efektu je tačna?
Povećana koncentracija CO₂ povećava afinitet hemoglobina za kiseonik
Smanjenje pH smanjuje afinitet hemoglobina za kiseonik
Kriva disocijacije hemoglobina pomera se ulevo pri povećanju temperature
Smanjena koncentracija H⁺ olakšava oslobađanje kiseonika iz hemoglobina
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja metoda određivanja hemoglobina se smatra "zlatnim standardom"?
Cijanmethemoglobinska metoda
Spektrofotometrija sa natrijum lauril sulfatom
Sahli-jeva metoda
Azidmethemoglobinska metoda
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koji derivat hemoglobina ne može reverzibilno vezivati kiseonik?
Oksihemoglobin
Karbaminohemoglobin
Methemoglobin
Deoksihemoglobin
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