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Quick Biochemistry - Mineral Metabolism (Section 3)

1
Which immunoglobulin exhibits the most potent antiviral effects?
Answer
(C)
lg A
2
What is the approximate half-life of Ig A?
Answer
(A)
6 days
3
What is the typical concentration of Ig A found in the blood?
Answer
(B)
200 mg%
4
Which organs are responsible for eliminating calcium from the body?
Answer
(B)
Kidney and intestine
5
What medical condition can result from a reduction in the ionized portion of calcium in the blood?
Answer
(A)
Tetany
6
Elevated blood calcium levels might suggest the presence of which condition?
Answer
(D)
Hypervitaminosis D
7
What is the standard range for phosphorus levels in the blood of an adult human?
Answer
(C)
3-4.5 mg
8
An increase in the rate at which carbohydrates are metabolized typically causes a temporary decrease in the blood levels of which substance?
Answer
(B)
Phosphate
9
In cases of rickets related to low phosphate levels, what is the potential lower limit for serum phosphate concentration?
Answer
(A)
1-2 mg/100 ml
10
What is the typical range for blood phosphorus levels in children?
Answer
(D)
4-7 mg/100 ml
11
A condition involving a kidney-related issue impacting phosphate reabsorption (resistant rickets) is characterized by
Answer
(C)
A low blood phosphorous with elevated alkaline Phosphate
12
Approximately how many grams of magnesium are typically present in the human body?
Answer
(D)
21
13
Iron is a key constituent of which of the following?
Answer
(A)
Hemoglobin
14
What is the approximate daily iron requirement for a healthy adult male?
Answer
(B)
10 mg
15
What is the typical concentration of protein-bound iron (PBI) in the plasma of males?
Answer
(A)
120-140 µg/100 ml
16
In the case of iron deficiency anemia
Answer
(A)
The plasma bound iron is low
17
What is the total iron content, roughly, of the human body?
Answer
(D)
4-5 g
18
In the context of liver diseases, what might be observed regarding plasma iron components?
Answer
(A)
Both the bound iron and total iron binding capacity of the plasma may be low
19
What is the suggested daily iron intake for women aged 18-55 years?
Answer
(D)
15 mg
20
What percentage of the body's total iron is typically found in hemoglobin?
Answer
(D)
60-70
21
In cases of a hypochromic microcytic anemia alongside elevated iron stores within bone marrow, which of the following is a possible cause?
Answer
(B)
A response to pyridoxine
22
Which food is known to be a valuable provider of iron?
Answer
(A)
Spinach
23
Among the options provided, which is the most effective dietary source of iron?
Answer
(A)
Organ meats
24
What blood test result is commonly associated with Sideroblastic anemia?
Answer
(B)
Increased serum iron and decreased iron binding capacity
25
In which condition is the body's iron absorption rate significantly amplified, exceeding normal levels by a factor of 2 to 10?
Answer
(A)
Iron deficiency anemia
26
Where does the primary absorption of iron predominantly take place within the digestive system?
Answer
(A)
Stomach and duodenum
27
Which of the following is an iron-containing compound that is not a porphyrin?
Answer
(A)
Hemosiderin
28
Where is the majority of molecular iron stored within the body?
Answer
(C)
Stored in the body in combination with ferritin
29
In individuals with hemochromatosis, what substance accumulates within the liver?
Answer
(A)
Iron
30
What is the typical cause of acquired siderosis, also known as Bantu siderosis?
Answer
(A)
Foods cooked in iron pots
31
What is the approximate range of copper present in the human body?
Answer
(B)
100-150 mg
32
Roughly how much copper is typically found in muscles?
Answer
(C)
64 mg
33
About how much copper is found in bones?
Answer
(D)
23 mg
34
What is the typical serum concentration range for copper, measured in mg/100 ml?
Answer
(C)
100-200
35
What is the typical serum concentration range for ceruloplasmin, measured in mg/100 ml?
Answer
(C)
25-43
36
What is the recommended daily copper intake for adults?
Answer
(C)
3.5-4.5 mg
37
Which of the following foods is the best source of copper?
Answer
(A)
Liver
38
What metals are found within the cytosolic superoxide dismutase enzyme?
Answer
(B)
Cu2+ and Zn2+
39
A copper deficiency would lead to reduced activity in which enzyme?
Answer
(A)
Lysine oxidase
40
Which element is associated with toxicosis in Wilson's disease?
Answer
(B)
Copper
41
In Wilson's disease, what is the primary issue regarding copper?
Answer
(A)
Copper excretion in bile is impaired
42
Menke's disease is caused by a problem in the processing of which element?
Answer
(D)
Copper
43
Menke's disease is an X-linked condition marked by what characteristic?
Answer
(C)
Reduced plasma copper and ceruloplasmin
44
Which trace element is essential for the formation of hemoglobin?
Answer
(C)
Copper
45
Approximately how much manganese is found in the entire body?
Answer
(D)
10 mg
46
In blood, the typical range of manganese levels, measured in µg per 100 ml, is:
Answer
(D)
4-20
47
What is the recommended daily intake of manganese through diet?
Answer
(B)
2-5 mg
48
Which element is a component of mitochondrial superoxide dismutase?
Answer
(D)
Manganese
49
What element is a component of mitochondrial pyruvate carboxylase?
Answer
(C)
Manganese
50
What is the suggested daily dietary intake of molybdenum for a healthy adult?
Answer
(D)
75-200 µg