Eating Habits-C

Iodine solution is a specific indicator for starch; it reacts with the helical structure of amylose to produce a characteristic blue-black color.

Iodine solution is initially yellowish-brown; when it comes into contact with starch, it forms a complex that appears deep blue-black.

The Biuret test uses copper sulphate and caustic soda; in the presence of protein, a violet color indicates a positive result.

Fats leave a permanent translucent (greasy) spot on paper because they do not evaporate and penetrate the fibers.

Benedict’s solution detects reducing sugars like glucose; upon heating, it forms a colored precipitate, ranging from green to brick-red.

A strong positive Benedict’s test produces a brick-red precipitate of copper(I) oxide, indicating a high concentration of reducing sugar.

Vitamin B complex and Vitamin C dissolve in water, are not stored in the body in significant amounts, and excess is excreted in urine.

Vitamins A, D, E, and K are fat-soluble; they dissolve in fats and oils and are stored in the body’s fatty tissues and liver.

Vitamin D promotes calcium absorption in the intestines, essential for maintaining bone density and preventing rickets or osteomalacia.

Vitamin C is required for collagen synthesis; its deficiency weakens connective tissues, leading to bleeding gums, slow wound healing, and scurvy.

Vitamin D deficiency in children impairs calcium absorption, causing soft, weak bones and skeletal deformities like bowed legs.

Vitamin A is a component of rhodopsin, a pigment in the retina essential for low-light and night vision.

A balanced diet provides carbohydrates, proteins, fats, vitamins, minerals, water, and roughage in appropriate amounts for optimal health.

Dietary fibre is indigestible plant material that adds bulk to stool, promotes regular bowel movements, and prevents constipation.

Water constitutes about 60–70% of the human body, varying with age, gender, and hydration status; it is essential for all bodily functions.

Junk food is high in unhealthy fats, sugar, and salt but lacks essential nutrients, leading to weight gain, malnutrition, and chronic diseases.

Junk foods are highly processed, calorie-dense, and nutrient-poor, often containing excessive unhealthy fats, sugars, or sodium.

Washing removes dirt, pesticides, and harmful microorganisms, reducing the risk of foodborne infections.

Millets are whole grains rich in fibre, protein, vitamins, and minerals, offering numerous health benefits.

Ragi is a nutritious millet grain, rich in calcium and fibre, commonly consumed in India.

Bajra, Jowar, Ragi, and other grains like quinoa and amaranth are classified as millets or pseudo-millets, known for their nutritional value.

Peeling removes dirt, pesticide residues, and inedible skins; some vegetables may be eaten with the skin if properly washed.

Vitamin K is essential for synthesizing clotting factors in the liver, enabling proper blood coagulation.

Thiamine deficiency affects the nervous and cardiovascular systems, causing muscle weakness, nerve damage, and heart problems.

This describes the Biuret test, where protein forms a violet complex with copper ions in alkaline conditions.

Roughage adds bulk to stool, stimulates intestinal peristalsis, and promotes regular bowel movements.

UVB rays from sunlight convert 7-dehydrocholesterol in the skin into Vitamin D3, essential for calcium absorption.

Millets are cereal grains primarily providing complex carbohydrates, along with fibre, protein, and micronutrients.

Water acts as a solvent for nutrients, aids digestion, transports substances, and eliminates metabolic waste through urine and sweat.

Deficiency diseases arise from chronic insufficiency of essential nutrients like vitamins, minerals, or proteins (e.g., scurvy, rickets, anaemia).

Vitamin C is water-soluble and boosts immune function by supporting various cellular activities and acting as an antioxidant.

Fats do not evaporate and make the paper translucent by filling the gaps between fibers, leaving a permanent greasy mark.

Vitamin D deficiency in adults leads to osteomalacia (softening of bones) due to inadequate calcium mineralization.

No single food provides all essential nutrients; variety ensures adequate intake of carbohydrates, proteins, fats, vitamins, and minerals.

Millets have a low glycemic index due to their high fibre content, causing gradual glucose release and better blood sugar control.

Heating provides the activation energy needed for reducing sugars to reduce copper(II) ions, forming a colored precipitate.

Vitamin B complex is water-soluble, while vitamins A, D, E, and K are fat-soluble.

Iron is a key component of hemoglobin; its deficiency reduces oxygen-carrying capacity, causing anaemia.

Regular meal timing maintains stable blood sugar, prevents overeating, and supports metabolic health.

Junk food is formulated for taste with high levels of saturated/trans fats, added sugars, and sodium, while lacking essential nutrients.

Vitamin E is a fat-soluble antioxidant that protects cell membranes from oxidative damage; rich sources include nuts, seeds, and vegetable oils.

Mashing or making a paste increases surface area, allowing iodine to contact starch fully for a clear color change.

B-complex vitamins act as coenzymes in metabolic pathways that convert carbohydrates, fats, and proteins into energy.

Poor hygiene increases contamination risk with pathogens, causing food poisoning and infectious diseases.

Jowar is the Indian name for sorghum, a drought-tolerant millet grain used in rotis and porridge.

Inadequate water intake disrupts fluid balance, leading to dehydration, fatigue, impaired kidney function, and other health issues.

Sudan III is a fat-soluble dye that stains lipids red, allowing visual identification of fats in samples.

Riboflavin deficiency causes angular cheilitis (cracked mouth corners) and glossitis (inflamed tongue), along with other symptoms.

Millets are drought-resistant crops with low water requirements, making them sustainable and environmentally friendly.

Uncovered food is exposed to airborne dust, insects, and pathogens, increasing the risk of contamination and foodborne illness.