Quick Biochemistry - Mineral Metabolism (Section 7)
1
Which condition hinders the uptake of iron?
Risposta(A)
In the presence of achlorhydria
2
What is the approximate daily iron need for an adult male?
3
What is the approximate daily iron need for a woman of reproductive age?
4
Which of the following is NOT a significant source of iron?
5
From which food group is iron absorption comparatively higher?
6
Approximately what percentage of iron is absorbed from a standard diet?
7
A lack of iron generally leads to which type of anemia?
8
Long-term, severe iron deficiency can result in epithelial atrophy in which of the following?
9
Which statement about bronzed diabetes is FALSE?
Risposta(A)
It is caused by excessive intake of copper
10
What is the approximate total iodine content in the body of a typical adult?
11
Approximately how much iodine, in milligrams, is typically found in the thyroid gland of a fully grown individual?
12
What is the approximate daily iodine intake, in micrograms, that is recommended for an adult?
13
In which of the following situations is the use of iodized salt generally advised?
Risposta(D)
In regions where goiter is prevalent
14
Which of the following statements about goiter that is common in a specific area is false?
Risposta(C)
It ultimately causes an overactive thyroid
15
What is the approximate total amount of copper, in milligrams, found within the body of a typical adult?
16
What is the typical range for plasma copper concentration?
17
What condition can be caused by a deficiency of copper?
18
What is the approximate daily requirement of copper, in milligrams, for adults?
19
Which of the following statements about ceruloplasmin is incorrect?
Risposta(C)
It is produced in the intestinal lining
20
Which of the following statements about Wilson's disease is incorrect?
Risposta(D)
Plasma copper levels are elevated
21
Regarding Menke's disease, which of the following is accurate?
Risposta(C)
Plasma copper is increased in it
22
Approximately how much zinc is present in the body of an average adult?
23
What is the typical range for plasma zinc levels?
24
Which of the following enzymes requires zinc to function as a cofactor?
25
Zinc plays a role in the process of storing and releasing which of the following substances?
26
The absorption of zinc in the intestines is hindered by the presence of which of the following?
27
What is the recommended daily intake of zinc for a typical adult?
28
In which of the following conditions is zinc deficiency frequently observed?
29
Which mineral deficiency can lead to hypogonadism?
30
Impaired wound healing can be a consequence of a deficiency in which mineral?
31
Which of the following deficiencies is most closely associated with hypochromic microcytic anemia?
32
Approximately how much manganese is needed daily by adults?
33
Which enzyme(s) require molybdenum to function correctly?
34
Which element plays a role in protecting the body against cellular damage from free radicals?
35
Which of the following enzymes contains selenium as a key component?
36
Which nutrient's demand is reduced by the presence of selenium?
37
What is the highest acceptable concentration of fluorine allowed in drinking water?
38
What is the recommended maximum daily intake of fluoride?
39
What percentage of an adult's body weight is typically composed of water?
40
How many joules are approximately equivalent to 1 kcal?
41
What is the approximate calorific value of proteins, as measured by a bomb calorimeter?
42
Why is the calorific value of proteins lower in a living person compared to a bomb calorimeter?
Risposta(D)
Proteins are not completely oxidized in living persons
43
What is the approximate calorific value of alcohol?
44
Which method(s) can be used to assess a person's energy expenditure?
Risposta(D)
Direct or indirect calorimetry
45
What is the approximate respiratory quotient for carbohydrates?
46
What is the approximate respiratory quotient for fats?
47
What is the approximate respiratory quotient for proteins?
48
What is the approximate respiratory quotient for an average mixed diet?
49
At a respiratory quotient of 0.85, approximately how many kcal of energy are expended per liter of oxygen consumed?
50
What is the approximate BMR of healthy adult men?
Risposta(C)
40 kcal/hour/square metre
