Superoxide (O₂⁻) is produced mainly from:
Anonymous Quiz
9%
A) DNA replication
17%
B) Glycolysis
70%
C) Mitochondrial respiration
4%
D) Protein synthesis
The role of copper in dealing with free radicals is to:
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16%
A) Produce radicals
68%
B) Stabilize them by electron transfer
8%
C) Store them
8%
D) Convert them into DNA
Lipid peroxidation caused by free radicals leads to:
Anonymous Quiz
31%
A. Increased membrane strength
46%
B. Cell membrane destruction
8%
C. DNA repair
15%
D. Enzyme activation
Copper chaperone proteins are important because they:
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9%
A. Increase copper absorption
36%
B. Store copper permanently
45%
C. Determine copper intracellular destination
9%
D. Oxidize copper
Which protein delivers copper to the Golgi apparatus?
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17%
A. CCS
42%
B. COX17
8%
C. ATOX1
33%
D. Metallothionein
ATP7A is responsible for:
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7%
A. Copper storage
43%
B. Export of copper from enterocyte to blood
14%
C. Copper excretion into bile
36%
D. Copper transport to mitochondria
After leaving the enterocyte, copper binds in blood to:
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41%
A. Ceruloplasmin only
18%
B. Hemoglobin
35%
C. Albumin and transcuprein
6%
D. Transferrin
The major carrier of copper in circulation (90–95%) is:
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32%
A. Albumin
11%
B. Transcuprein
42%
C. Ceruloplasmin
16%
D. Metallothionein
Copper chaperone CCS delivers copper to:
Anonymous Quiz
31%
A. Golgi apparatus
15%
B. Mitochondria
38%
C. Superoxide dismutase
15%
D. Nucleus
COX17 delivers copper to:
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0%
A. Lysosomes
38%
B. Mitochondria
38%
C. Golgi apparatus
23%
D. Cytosol
Metallothionein in enterocytes functions to:
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7%
A. Permanently eliminate copper
47%
B. Transport copper to blood
40%
C. Store copper temporarily
7%
D. Oxidize copper
Which protein is responsible for copper excretion into bile?
Anonymous Quiz
23%
A. ATP7A
29%
B. ATP7B
29%
C. CTR1
19%
D. CCS
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