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WorksheetsHemoglobin and Its Functions Quiz
Total questions: 20
Worksheet time: 10mins
Hemoglobin is best defined as?
A plasma protein
A conjugated protein with heme
A lipid complex
An enzyme
The main function of hemoglobin is?
Transport of CO2 only
Transport of oxygen
Buffering blood pH only
Immunity
Each hemoglobin molecule can carry how many oxygen molecules?
1
2
3
4
Heme portion of hemoglobin contains which metal?
Copper
Zinc
Iron
Magnesium
Globin part of hemoglobin is made up of?
Lipids
Carbohydrates
Amino acids
Nucleotides
Which amino acid is essential for heme synthesis?
Glycine
Valine
Leucine
Alanine
The first step of heme synthesis occurs in?
Cytosol
Nucleus
Mitochondria
Ribosome
Rate-limiting enzyme of heme synthesis is?
ALA dehydratase
ALA synthase
Heme oxygenase
Ferrochelatase
Vitamin required for hemoglobin synthesis is?
Vitamin A
Vitamin C
Vitamin B6
Vitamin K
Iron absorption mainly occurs in the?
Stomach
Duodenum
Ileum
Colon
Hemoglobin synthesis mainly occurs in?
Mature RBCs
Reticulocytes
Bone marrow erythroblasts
Plasma
Normal breakdown of hemoglobin occurs primarily in?
Kidney
Heart
Spleen
Lungs
Heme is converted to biliverdin by the enzyme?
Bilirubin reductase
Heme oxygenase
Biliverdin reductase
ALA synthase
Biliverdin is converted to bilirubin by?
Heme oxygenase
Biliverdin reductase
Ferrochelatase
ALA dehydratase
Unconjugated bilirubin is transported in blood bound to?
Globulin
Albumin
Hemoglobin
Transferrin
Conjugation of bilirubin occurs in the?
Spleen
Kidney
Liver
Intestine
Jaundice is clinically seen when serum bilirubin exceeds?
0.5 mg/dL
1 mg/dL
2 mg/dL
5 mg/dL
Hemolytic jaundice is mainly due to?
Liver cell failure
Bile duct obstruction
Excess RBC destruction
Poor conjugation
Hepatocellular jaundice is caused by?
Gallstones
Viral hepatitis
Hemolysis only
Pancreatic cancer
Obstructive jaundice is characterized by?
Increased unconjugated bilirubin
Normal urine color
Clay-colored stools
Increased urobilinogen in urine
