Nutrition and Nutritional requirement Questions in English

(C) Starvation is a state of extreme hunger resulting from a lack of essential nutrients and energy intake.
When the food consumed by an individual is insufficient to meet the body's metabolic energy requirements,the body begins to catabolize its own stored reserves (like glycogen,fats,and eventually proteins) to survive.
Therefore,a man is said to be starving when the food he eats does not meet the energy loss or the metabolic demand of the body.

(D) balanced diet is defined as a diet that contains all the essential nutrients in the correct proportions required for the body to function properly.
These essential nutrients include carbohydrates,fats,proteins,minerals,vitamins,dietary fiber (roughage),and water.
Therefore,option $D$ is the most comprehensive and correct answer.

(C) balanced diet is defined as a diet that contains the proper proportions of carbohydrates,fats,proteins,vitamins,minerals,and water necessary to maintain good health.
According to standard nutritional guidelines,carbohydrates are the primary source of energy and should constitute the largest portion of the diet,typically around $60\%$ or $3/5$ of the total caloric intake.
Proteins are essential for growth and repair and typically make up about $20\%$ or $1/5$ of the diet.
Fats are also required for energy and cell structure,accounting for the remaining $20\%$ or $1/5$ of the diet.
Therefore,the correct ratio is $1/5$ protein,$1/5$ fat,and $3/5$ carbohydrate.

(A) An average adult male requires approximately $2900-3000$ Kcal of energy per day to maintain his basal metabolic rate and daily physical activities.
In comparison,a child of about $15$ years requires approximately $2500$ Kcal,and an infant of $4-6$ years requires about $1500$ Kcal per day.
Therefore,among the given options,$2900$ Kcal is the most appropriate value for an average man.

(A) The average energy requirement for a woman is generally lower than that of a man. This is primarily due to differences in body composition,specifically because men typically have a higher proportion of muscle mass and a lower proportion of body fat compared to women. Since muscle tissue is more metabolically active than adipose tissue,men generally have a higher Basal Metabolic Rate $(BMR)$. Therefore,for individuals of similar age and activity levels,the daily caloric requirement for a woman is less than that for a man.

(A) Beri-beri is a nutritional disorder caused by the deficiency of thiamine (vitamin $B_1$). This is statement $2$.
It is commonly found in populations where the staple diet consists of polished rice,as the milling process removes the outer layer of the rice grain which contains thiamine. This is statement $4$.
The clinical symptoms of beri-beri include neuritis (nerve inflammation),muscle wasting,paralysis,oedema (swelling),mental confusion,and cardiovascular complications leading to heart failure. This is statement $5$.
Statement $1$ describes a disease prevalent in sub-Saharan Africa (often associated with other conditions),and statement $3$ describes protein-energy malnutrition (like Kwashiorkor or Marasmus),not beri-beri.
Therefore,the correct group of statements is $2, 4,$ and $5$.

(D) The correct matches are as follows:
$(a)$ Kwashiorkor is caused by severe protein deficiency.
$(b)$ Anaemia is commonly caused by iron deficiency.
$(c)$ Dermatitis can be caused by a deficiency of Biotin (Vitamin $B_7$).
$(d)$ Marasmus is caused by a deficiency of both protein and total calories (often associated with Pyridoxine deficiency in specific metabolic contexts, though primarily protein-energy malnutrition).
$(e)$ Bleeding disorders are associated with a deficiency of Vitamin $K$ (Menadione).
Matching these:
$(a)-(r)$
$(b)-(p)$
$(c)-(t)$
$(d)-(s)$
$(e)-(q)$
Therefore, the correct option is $(D)$.

(D) Vitamin $K$ is known as the antihaemorrhagic vitamin because it plays a crucial role in the synthesis of clotting factors in the liver.
These clotting factors are essential for the coagulation of blood,which prevents excessive bleeding (haemorrhage) after an injury.

(B) Mine workers spend most of their time underground,away from direct sunlight.
Sunlight is essential for the synthesis of $Vitamin \ D$ in the human skin.
$Vitamin \ D$ deficiency leads to the softening of bones,a condition known as $Osteomalacia$ in adults and $Rickets$ in children.
Therefore,mine workers are most likely to suffer from $Osteomalacia$.

(B) Vitamin $C$ (ascorbic acid) is essential for the synthesis of collagen,which is the primary structural protein in the skin and connective tissues.
It plays a critical role in the formation of new tissue and the repair of damaged skin,thereby significantly enhancing the process of wound healing.

(D) Kwashiorkor is a form of protein-energy malnutrition characterized by a deficiency of proteins in the diet.
This condition typically occurs in children between the age group of $1$ to $5$ years.
It is often associated with symptoms like edema,stunted growth,and skin changes.
Therefore,the correct option is $D$.

(A) . Riboflavin (vitamin $B_2$) deficiency causes cheilosis,which is characterized by inflammation and cracking at the angles of the mouth. Slow clotting of blood is caused by a deficiency of vitamin $K$.

(D) . Pellagra is a deficiency disease caused by a lack of nicotinamide (vitamin $B_3$),also known as niacin.
It is commonly observed in populations consuming diets low in tryptophan.
The classic symptoms of pellagra are often referred to as the '$3D$'s': dermatitis (thick,pigmented,scaly skin on hands and legs),diarrhoea,and dementia.
Swollen lips (cheilosis) and irritability are also common clinical manifestations of this condition.

(A) $Kwashiorkor$ is a nutritional deficiency disease caused by a diet severely lacking in protein.
It primarily affects children in developing countries where the diet is based on starchy foods with insufficient protein intake.
Therefore,it is a form of malnutrition.

(C) Honey is primarily composed of carbohydrates (mainly glucose and fructose).
$1$ gram of carbohydrates provides approximately $4$ kcal of energy.
Therefore,$2.1$ grams of honey provides $2.1 \times 4 = 8.4$ kcal of energy.
However,in the context of standard biological questions regarding the caloric value of honey,it is often cited that $100$ grams of honey provides approximately $300-320$ kcal.
Based on the provided options,there appears to be a discrepancy in the question's premise or the options provided,as none match the standard calculation. Given the standard reference values,$36$ kcal is sometimes associated with specific nutritional contexts,but mathematically,the provided options do not align with standard energy values for $2.1$ grams.

(D) Nutrition refers to the process by which organisms obtain or synthesize food.
$A$,$B$,and $C$ (Photosynthesis,Absorption,and Ingestion) are all recognized modes or processes of nutrition.
$D$ (Decomposers) refers to a category of organisms (e.g.,fungi and bacteria) that obtain nutrients by breaking down dead organic matter,rather than being a mode of nutrition itself.
Therefore,Decomposers is not a mode of nutrition.

(C) Nutrition is the process by which organisms obtain energy and nutrients. Modes of nutrition are categorized based on how organisms acquire food. $Ingestion$ is a specific mode of nutrition (holozoic nutrition) where an organism takes in complex organic substances. In contrast, $Producers$, $Consumers$, and $Decomposers$ are trophic levels or functional roles within an ecosystem, not modes of nutrition themselves.

(A) In India,pulses (legumes) are considered the most significant and accessible source of plant-based protein for vegetarians. Pulses such as lentils,chickpeas,and beans provide essential amino acids required for human health. While potatoes and rice are primarily sources of carbohydrates,meat is not consumed by vegetarians.

(C) Protein deficiency leads to a condition known as $Kwashiorkor$.
This is a form of protein-energy malnutrition characterized by edema,an enlarged liver with fatty infiltrates,and skin changes.
$Rickets$ is caused by a deficiency of $Vitamin D$,$Calcium$,or $Phosphate$.
$Scurvy$ is caused by a deficiency of $Vitamin C$.
$Carotenemia$ is the presence of excess carotene in the blood,usually due to excessive intake of carotene-rich foods.

(A) Kwashiorkor is a severe form of protein-energy malnutrition. It is primarily caused by a deficiency of protein in the diet,even if the total caloric intake is adequate. It is most commonly seen in children in developing countries who are weaned off breast milk onto a diet high in carbohydrates but low in protein.

(D) Milk,eggs,and bread are rich in proteins,fats,and carbohydrates,but they are generally poor sources of Vitamin $C$ (ascorbic acid).
Vitamin $C$ is primarily found in fresh fruits and vegetables.
$A$ deficiency of Vitamin $C$ leads to a condition known as Scurvy,which is characterized by bleeding gums,delayed wound healing,and weakened connective tissues.
Therefore,a diet consisting only of milk,eggs,and bread will lead to a deficiency of Vitamin $C$,resulting in Scurvy.

(C) Bleeding gums are a common symptom of $Vitamin C$ (ascorbic acid) deficiency,a condition known as scurvy. $Vitamin C$ is essential for the synthesis of collagen,which maintains the integrity of blood vessels and gum tissues. Citrus fruits like lemons,oranges,and amla are rich sources of $Vitamin C$. Therefore,consuming lemon is recommended to treat bleeding gums caused by this deficiency.

(C) Protein-Energy Malnutrition $(PEM)$ causes two major disorders in children: $Marasmus$ and $Kwashiorkor$.
$Kwashiorkor$ is specifically caused by the deficiency of protein alone,while $Marasmus$ is caused by the deficiency of both proteins and total food calories.
$Rickets$ is caused by Vitamin $D$ deficiency.
$Scurvy$ is caused by Vitamin $C$ deficiency.
$Carotenemia$ is caused by excessive intake of carotene-rich foods.
Therefore,the correct option is $C$.

(A) Kwashiorkor is a form of protein-energy malnutrition $(PEM)$ caused by a severe deficiency of protein in the diet.
Meat,lentils,milk,and eggs are rich sources of high-quality proteins.
Therefore,a person suffering from Kwashiorkor is advised to increase the intake of these protein-rich foods to restore protein balance in the body.
$A$ is the correct option.

(C) Rickets is a condition that affects bone development in children,causing bones to become soft and weak,which can lead to skeletal deformities.
It is primarily caused by a deficiency of Vitamin $D$,which is essential for the absorption of calcium and phosphorus from the diet.
Without sufficient Vitamin $D$,the body cannot maintain adequate levels of these minerals,leading to impaired bone mineralization.
Therefore,the correct option is $C$.

(B) The deficiency diseases are caused by the lack of specific vitamins:
$1$. Beriberi is caused by the deficiency of Vitamin $B_1$ (Thiamine).
$2$. Scurvy is caused by the deficiency of Vitamin $C$ (Ascorbic acid).
$3$. Rickets is caused by the deficiency of Vitamin $D$ (Calciferol).
Therefore,the correct sequence is $B, C$ and $D$.

(A) During prolonged fasting,the body first utilizes stored glycogen from the liver (glycogenolysis) to maintain blood glucose levels. Once glycogen stores are depleted,the body begins to break down stored fats (lipids) from adipose tissue through lipolysis to provide energy. Therefore,the liver and adipose tissue are the primary sources of stored energy during fasting.

(D) Protein-Energy Malnutrition $(PEM)$ can affect large sections of the population during drought,famine,and political turmoil.
$1$. Kwashiorkor is produced by protein deficiency unaccompanied by calorie deficiency.
$2$. Marasmus is produced by a deficiency of both proteins and calories.
Since both conditions are related to protein deficiency (either alone or with calorie deficiency),both $(A)$ and $(B)$ are correct.

(C) Keratomalacia is a serious eye condition that occurs due to a severe deficiency of Vitamin $A$.
It is characterized by the softening and clouding of the cornea,which can lead to blindness if not treated promptly.
Vitamin $A$ is essential for maintaining the health of the epithelial tissues and the proper functioning of the retina.
Therefore,the correct option is $C$.

(A) Beriberi is a disease caused by a deficiency of Vitamin $B_1$,also known as Thiamine.
It affects the peripheral nervous system and the cardiovascular system.
Vitamin $B_1$ is essential for the metabolism of carbohydrates and the proper functioning of nerves.
Deficiency of Vitamin $B_2$ (Riboflavin) causes ariboflavinosis.
Deficiency of Vitamin $B_{12}$ (Cobalamin) leads to pernicious anemia.
Deficiency of Vitamin $C$ (Ascorbic acid) causes scurvy.
Therefore,the correct option is $A$.

(D) Scurvy is a nutritional deficiency disease caused by a lack of Vitamin $C$ (ascorbic acid) in the diet.
Vitamin $C$ is essential for the synthesis of collagen,a protein that helps maintain the health of skin,cartilage,teeth,bone,and blood vessels.
Symptoms include bleeding gums,weakness,fatigue,and poor wound healing.
Therefore,the correct option is $D$.

(D) Vitamin $C$ (ascorbic acid) is essential for the synthesis of collagen,which is the primary structural protein in the skin and connective tissues.
It plays a critical role in the formation of new tissue and the repair of damaged skin,thereby promoting wound healing.
$A$ deficiency in Vitamin $C$ leads to impaired wound healing and conditions like scurvy.

(C) Night blindness,also known as nyctalopia,is a condition where an individual has difficulty seeing in low light or darkness.
This condition is primarily caused by a deficiency of Vitamin $A$ (retinol).
Vitamin $A$ is essential for the formation of rhodopsin,a pigment found in the rod cells of the retina that is responsible for vision in low-light conditions.
Therefore,a lack of Vitamin $A$ impairs the function of rod cells,leading to night blindness.

(C) balanced diet is essential for maintaining good health,providing energy,and ensuring longevity. $A$ balanced diet contains all the necessary nutrients,such as carbohydrates,proteins,fats,vitamins,minerals,and dietary fiber,in the correct proportions required by the body to function optimally. Therefore,to lead a healthy and strong life,a balanced diet is indispensable.

(A) Nicotinic acid,also known as Niacin or Vitamin $B_3$,is an essential water-soluble vitamin.
Deficiency of Niacin leads to a condition known as Pellagra.
Pellagra is characterized by the '$3$ Ds': Dermatitis,Diarrhea,and Dementia.
In contrast,Rickets is caused by Vitamin $D$ deficiency,Scurvy by Vitamin $C$ deficiency,and Beriberi by Vitamin $B_1$ (Thiamine) deficiency.

(D) The correct answer is $D$.
$1$. Scurvy is caused by the deficiency of Vitamin $C$.
$2$. Rickets is caused by the deficiency of Vitamin $D$.
$3$. Night blindness and Xerophthalmia are caused by the deficiency of Vitamin $A$.
$4$. Beriberi is caused by the deficiency of Vitamin $B_1$ (Thiamine),not Vitamin $K$. Vitamin $K$ deficiency leads to impaired blood clotting.

(A) $Vitamin-A$ (retinol) is essential for vision,immune function,and skin health. Carrots are rich in $\beta-carotene$,which the human body converts into $Vitamin-A$. Therefore,carrots are considered an excellent dietary source of $Vitamin-A$.

(D) Carbohydrates are the primary source of energy for the human body. Among the given options,rice is a staple food that is rich in starch,which is a complex carbohydrate. Meat is primarily a source of proteins and fats. Chickpeas are a good source of proteins and fiber. Carrots are rich in vitamins,particularly Vitamin $A$. Therefore,rice is the best source for an adequate supply of carbohydrates.

(A) The energy requirements of animals and the energy content of food are expressed in terms of measure of heat energy because heat is the ultimate form of all energies. This is often measured to as calorie $(cal)$ or joule $(J)$. Since this amount of energy is always small, it is common to express it in terms of kilocalorie $(kcal)$ or kilo joule $(kJ)$. One kilocalorie is the amount of heat energy required to raise the temperature of $1 \text{ kg}$ of water by $1^{\circ}C$. A normal human requires approximately $2500 \text{ kcal}$ per day to maintain metabolic activities and physical work.

(A) Marasmus is a form of Protein-Energy Malnutrition $(PEM)$.
It is caused by a deficiency of both proteins and total food calories.
It is commonly found in infants less than a year in age.
In this condition,the body experiences severe muscle wasting,thinning of limbs,and dry,wrinkled skin.
Therefore,the correct option is $A$.

(C) Vitamin-$K$ is essential for the synthesis of clotting factors in the liver,such as prothrombin and factors $VII$,$IX$,and $X$.
When there is a deficiency of Vitamin-$K$,the blood clotting mechanism is impaired,leading to prolonged or continuous bleeding from an injured site.
Therefore,the correct option is $C$.

(D) Night blindness,also known as $nyctalopia$,is a condition where an individual has difficulty seeing in low light or darkness.
This condition is primarily caused by a deficiency of Vitamin $A$ (retinol).
Vitamin $A$ is essential for the formation of $rhodopsin$,a pigment found in the rod cells of the retina that is responsible for vision in dim light.
Therefore,the correct option is $D$.

(C) Scurvy is a disease resulting from a deficiency of Vitamin $C$ (ascorbic acid) in the diet.
Vitamin $C$ is essential for the synthesis of collagen,which is a structural protein in connective tissues.
$A$ deficiency leads to symptoms such as bleeding gums,skin spots,and poor wound healing.

(B) Kwashiorkor is a form of severe protein-energy malnutrition characterized by edema (swollen body parts),skin changes such as pigmentation and peeling,and inflammation.
It occurs due to a deficiency of protein in the diet.
Symptoms include swollen lips,pigmented skin on the hands and feet,and general inflammation of tissues.
Therefore,the correct option is $B$.

(D) Deficiency of $Vitamin \ D$ leads to impaired calcium absorption,which affects bone mineralization.
In children,this deficiency causes $Rickets$,characterized by soft and weak bones.
In adults,the same deficiency leads to $Osteomalacia$,a condition where bones become soft and brittle,increasing the risk of fractures.
$Beriberi$ is caused by a deficiency of $Vitamin \ B1$ $(Thiamine)$.
$Scurvy$ is caused by a deficiency of $Vitamin \ C$ $(Ascorbic \ acid)$.

(B) During the summer months,it is generally advised to avoid consuming high amounts of fats.
$1$. Fats are energy-dense and their metabolism generates a significant amount of metabolic heat,which can increase body temperature.
$2$. High-fat diets can also lead to sluggishness and digestive discomfort in hot weather.
$3$. In contrast,vitamins and minerals are essential for maintaining hydration and electrolyte balance,and proteins are necessary for tissue repair,though they should be consumed in moderation.

(A) $Thiamine$ is also known as $Vitamin$ $B_1$.
Deficiency of $Thiamine$ leads to a disease called $Beriberi$,which affects the peripheral nervous system and the cardiovascular system.
$Rickets$ is caused by the deficiency of $Vitamin$ $D$.
$Scurvy$ is caused by the deficiency of $Vitamin$ $C$.
$Pellagra$ is caused by the deficiency of $Vitamin$ $B_3$ $(Niacin)$.
Therefore,the correct option is $A$.

(B) Let us analyze the given pairs:
$1$. Vitamin $C$ deficiency causes Scurvy. (Correct)
$2$. Vitamin $B_2$ (Riboflavin) deficiency causes Cheilosis and Glossitis,whereas Pellagra is caused by the deficiency of Vitamin $B_3$ (Niacin). (Incorrect)
$3$. Vitamin $B_{12}$ (Cyanocobalamin) deficiency causes Pernicious anemia. (Correct)
$4$. Vitamin $B_6$ (Pyridoxine) deficiency causes dermatitis and convulsions,whereas Beri-beri is caused by the deficiency of Vitamin $B_1$ (Thiamine). (Incorrect)
Note: Since the question asks for the pair that is not correctly matched,both $B$ and $D$ are technically incorrect. However,in standard multiple-choice formats,if only one must be chosen,$B$ is often cited for Pellagra,but $D$ is also factually wrong. Given the options,$B$ and $D$ are both incorrect matches.

(A) Vitamin $A$ (retinol) is essential for the formation of rhodopsin,a pigment found in the rod cells of the retina that is responsible for vision in low light conditions.
Deficiency of Vitamin $A$ leads to a condition known as night blindness (nyctalopia),where an individual has difficulty seeing in dim light or at night.
Scurvy is caused by a deficiency of Vitamin $C$.
Beriberi is caused by a deficiency of Vitamin $B_1$ (thiamine).
Rickets is caused by a deficiency of Vitamin $D$.

(A) Kwashiorkor is a form of severe protein-energy malnutrition. It is specifically caused by a deficiency of protein in the diet,even if the total caloric intake is sufficient. This condition is commonly observed in children and leads to symptoms such as edema,stunted growth,and skin changes.