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UNE MEDICAL BIOCHEMISTRY UNIT 1 TEST QUESTIONS AND ANSWERS
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UNE MEDICAL BIOCHEMISTRY UNIT 1 TESTQUESTIONS AND ANSWERS
Changes in the physiological variables listed below can affect haemoglobin's
affinity for oxygen. Which of the following will diminish haemoglobin's affinity
for oxygen?
a) reduction in protons.
b) rise in 2,3-bisphosphoglycerate (BPG)
d) Increase in pH
d) reduction in CO2 - ANSWER Increase in 2,3-bisphosphoglycerate (BPG)
Domains are common structural components that serve a specific function
inside a protein. Which of the following represents a protein domain?
a) a prosthetic group like heme.
b) uneven coils and loops.
c) a network of β-strands joined by α-helixes.
d) a single α-helix. A network of β-strands joined by α-helixes.
A 22-year-old female was diagnosed with acute pancreatitis. Which of the
following serum enzymes would be elevated in this case?
A) Lactate dehydrogenase
B) amylase
, C) Troponin
d) creatine kinase - answer is amylase.
The movement of ammonia from an amino acid to an alpha-keto acid includes a
series of enzymes best described as
a) transfers.
B) ligases
c) Lyases.
d) isomerases: ANSWER transferases
Which of the following proteins is likely to have a quaternary structure?
a) A protein with α-helix and β-sheet secondary structures.
b) a multimeric protein with numerous peptide chains.
c) A tiny protein made up of a single amino acid chain.
d) a big transmembrane protein with seven alpha-helical domains - ANSWER: a
multimeric protein with numerous peptide chains.
What enzyme class is responsible for the cleavage of fructose 1, 6 bisphosphate
into dihydroxyacetone and glyceraldehyde 3-phosphate?
A) Ligase
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