Quick Biochemistry - Proteins And Protein Metabolism (Section 7)

1
Approximately how much net energy, after accounting for Specific Dynamic Action (SDA), is derived from 25 grams of protein?
Answer
(A)
70 kcal
2
Roughly how much net energy, after accounting for SDA, is obtained from consuming 25 grams of carbohydrates?
Answer
(B)
95 kcal
3
If 100 grams of fat are consumed, what is the approximate net energy gain after considering SDA?
Answer
(B)
780 kcal
4
When proteins, carbohydrates, and fats are consumed simultaneously, what is the effect on SDA?
Answer
(C)
Carbohydrates and fats lower the SDA of proteins
5
After determining a person's energy needs, what adjustment is made to account for SDA?
Answer
(B)
10% kcal are added on account of SDA
6
What is the suggested daily energy intake for a sedentary adult Indian male?
Answer
(B)
2,400 kcal/day
7
What is the suggested daily energy intake for a sedentary adult Indian female?
Answer
(A)
1,900 kcal/day
8
During pregnancy, how much should be added to the calculated energy requirement?
Answer
(A)
300 kcal/day
9
During the initial six months of breastfeeding, what increase in energy intake is advised?
Answer
(C)
550 kcal/day
10
Which of the following are considered the main components of a diet?
Answer
(D)
Carbohydrates, fats and proteins
11
What amino acid typically restricts protein synthesis in wheat?
Answer
(B)
Lysine
12
What amino acid is most deficient in pulses?
Answer
(D)
Methionine
13
Which of the following is maize lacking in?
Answer
(D)
Lysine and tryptophan
14
What term describes the proportion of consumed protein or nitrogen that enters the bloodstream?
Answer
(C)
Digestibility coefficient
15
What is the definition of a protein's biological value?
Answer
(B)
The percentage of ingested protein/nitrogen in the body
16
Which factors influence net protein utilisation?
Answer
(D)
Digestibility coefficient and biological value
17
What is the measure of weight gain per unit of consumed protein?
Answer
(B)
Protein efficiency ratio
18
Which protein source is often used to assess the nutritional value of other proteins?
Answer
(B)
Egg proteins
19
Approximately what is the biological value of proteins found in eggs?
Answer
(D)
94%
20
Which of the following typically has the highest protein efficiency ratio?
Answer
(B)
Egg proteins
21
Which of the following food items typically exhibits the lowest protein efficiency ratio?
Answer
(A)
Maize
22
Approximately, what percentage of an egg's composition is protein?
Answer
(B)
13%
23
What is the approximate protein content typically found in meat?
Answer
(D)
20%
24
Around what percentage of rice is protein?
Answer
(A)
7%
25
The approximate energy content of wheat is
Answer
(B)
3.5 kcal/gm
26
For individuals who do not eat meat, what is the most significant contribution pulses make to their diet?
Answer
(B)
Proteins
27
The amino acids found in pulses can complement the deficient amino acids in which of the following?
Answer
(A)
Cereals
28
Milk is considered a beneficial source of
Answer
(C)
Proteins, lactose and retinol
29
Milk is a poor source of which of the following?
Answer
(B)
Vitamin C
30
Which nutrient is milk relatively low in?
Answer
(D)
Iron
31
Which substance is *least* abundant in eggs?
Answer
(C)
Ascorbic acid
32
What is a phosphoprotein found in eggs?
Answer
(D)
Ovovitellin
33
Eating raw eggs can lead to a shortage of which nutrient?
Answer
(C)
Biotin
34
Eggs contain a low amount of
Answer
(B)
Carbohydrates
35
In which of these does cholesterol *not* exist?
Answer
(C)
Egg white
36
Which element is present in *lower* amounts in meat?
Answer
(B)
Fluorine
37
What dietary deficiency is associated with Kwashiorkor?
Answer
(C)
Proteins
38
Which of the following is *not* a symptom of Kwashiorkor?
Answer
(A)
Mental retardation
39
At what stage of life does Kwashiorkor generally appear?
Answer
(A)
The post-weaning period
40
What is the primary dietary factor that leads to Marasmus?
Answer
(C)
Calories
41
What is a key difference between Marasmus and Kwashiorkor?
Answer
(D)
Loss of subcutaneous fat occurs in Marasmus but not Kwashiorkor
42
Approximately how many kilocalories of energy are stored in an average healthy adult male?
Answer
(B)
100,000 kcal
43
When the body is deprived of food, which stored nutrient is used up first?
Answer
(A)
Glycogen
44
Which type of enzyme production is increased during periods of starvation?
Answer
(B)
Gluconeogenic enzymes
45
What is the typical blood chemistry finding in someone with hypoparathyroidism?
Answer
(C)
Low calcium and high phosphate
46
How many amino acids are linked together in the calcitonin molecule?
Answer
(B)
32
47
Calcitonin is produced by which gland?
Answer
(B)
Thyroid gland
48
Which hormone is responsible for lowering the amount of calcium in the blood?
Answer
(B)
Calcitonin
49
Which hormone is secreted by the α cells of the Islets of Langerhans?
Answer
(B)
Glucagon
50
What does the A/G ratio represent?
Answer
(B)
Ratio of serum proteins