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Questions and Answers
Which type of vitamin includes Vitamin A, D, E, and K?
Which type of vitamin includes Vitamin A, D, E, and K?
Water is composed of two hydrogen atoms and one oxygen atom.
Water is composed of two hydrogen atoms and one oxygen atom.
True
Name one mineral salt required for metabolic activities.
Name one mineral salt required for metabolic activities.
Calcium
Vitamins do not supply ______ but are essential for releasing energy.
Vitamins do not supply ______ but are essential for releasing energy.
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What is one function of water in the body?
What is one function of water in the body?
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Match the vitamin with its function:
Match the vitamin with its function:
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A balanced diet includes adequate amounts of carbohydrates, fats, proteins, vitamins, and minerals.
A balanced diet includes adequate amounts of carbohydrates, fats, proteins, vitamins, and minerals.
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What are the water-soluble vitamins?
What are the water-soluble vitamins?
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Which substance is known as animal starch?
Which substance is known as animal starch?
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Carbohydrates are used to build exoskeletons in arthropods.
Carbohydrates are used to build exoskeletons in arthropods.
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Name one essential function of roughage in the diet.
Name one essential function of roughage in the diet.
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Fats and oils are known as __________ fats when they are solid at room temperature.
Fats and oils are known as __________ fats when they are solid at room temperature.
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Which of the following is a source of unsaturated fats?
Which of the following is a source of unsaturated fats?
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Match the following nutrients with their primary importance:
Match the following nutrients with their primary importance:
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Proteins are mainly composed of carbohydrates and fats.
Proteins are mainly composed of carbohydrates and fats.
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What is a potential consequence of excessive fat storage in the body?
What is a potential consequence of excessive fat storage in the body?
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Which of the following is NOT a benefit of roughage in the diet?
Which of the following is NOT a benefit of roughage in the diet?
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A balanced diet should contain 60% of proteins.
A balanced diet should contain 60% of proteins.
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What nutritional deficiency disease is common in tropical regions due to the high cost of protein foods?
What nutritional deficiency disease is common in tropical regions due to the high cost of protein foods?
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Roughage is also known as dietary _____ .
Roughage is also known as dietary _____ .
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Match the following nutrients with their correct percentage in a balanced diet:
Match the following nutrients with their correct percentage in a balanced diet:
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Which of the following is a function of enzymes in digestion?
Which of the following is a function of enzymes in digestion?
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Roughage helps in reducing excess weight gain.
Roughage helps in reducing excess weight gain.
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What role does water play in a balanced diet?
What role does water play in a balanced diet?
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Study Notes
Mineral Salts
- Needed for various metabolic activities
- Most minerals obtained through food
- Sodium chloride and iron can be taken directly
- Classes of minerals:
- Calcium
- Phosphorus
- Magnesium
- Sulfur
- Sodium
- Chlorine
- Iron
- Iodine
- Manganese
- Fluorine
- Copper
- Cobalt
Vitamins
- Organic compounds needed in small quantities to support life
- Do not supply energy but help the body release energy from carbohydrates, fats, and proteins
- Act as chemical enzymes in the body and play an important role in many chemical reactions
- Divided into two groups:
- Fat-soluble vitamins: Vitamin A, D, E, and K
- Water-soluble vitamins: Vitamin C and B-complex vitamins
B-Complex Vitamins
- Folic acid
- Thiamine (B1)
- Riboflavin (B2)
- Niacin (B3)
- Pantothenic acid (B5)
- Pyridoxine (B6)
- Cyanocobalamine (B12)
Water
- Universal solvent that dissolves many substances
- Composed of two elements: Hydrogen and oxygen in the ratio of 2:1
- Sources:
- Metabolic water obtained from food
- Physically obtained from rivers, wells, ponds, taps, etc.
- Rain is a natural source
- Importance:
- Major component of the body
- Required for metabolic activities
- Maintains body temperature
- Solvent for soluble food substances, aiding digestion
- Major component of blood, providing a medium for nutrient transportation
- Aids in excretion of metabolic waste
- Forms the basis of endocrinal secretions (hormones)
Carbohydrates
- Provides energy for proper functioning of the body
- Oxidizes to release heat for maintaining body temperature
- Used to build the exoskeleton of arthropods
- Mucus, which acts as a lubricant in various metabolic activities, is composed of carbohydrates
- Examples: starch, cellulose
Starch
- Insoluble carbohydrate found in corn, wheat, potatoes, beans, and peas
- Easily digested, broken down into simple sugars that can be absorbed by body cells
- Dissolves into the bloodstream
Cellulose
- Polysaccharide that makes up the cell walls of plants
- Provides roughage for proper functioning of the digestive system
Fats and Oils (Lipids)
- Fats are solid lipids at room temperature (saturated fats)
- Oils are liquid lipids at room temperature (unsaturated fats)
- Both are hydrolyzed during digestion to fatty acids and glycerol
- Composed of carbon, hydrogen, and a little oxygen
- Sources: palm oil, groundnut, soybean oil, melon oil, butter, fish, cheese, and lard
- Importance:
- Produce more energy than carbohydrates
- Provide essential fatty acids to animals
- Help maintain body temperature
- Provide fat-soluble vitamins
- Serve as stored food
- Fat under the skin protects the body against rapid heat loss
- Excess storage of fats in cells and tissues can cause obesity
Proteins
- Complex macromolecules made up of smaller units of amino acids
- Composed of carbon, hydrogen, oxygen, nitrogen, and sometimes phosphorus and sulfur
- Sources:
- Animal: milk, egg, fish, cheese, meat, and chicken
- Plant: groundnut, soybean, and cowpea
- Importance:
- Help in the synthesis of ribonucleic acid (RNA) and deoxyribonucleic acid (DNA)
- Used in the synthesis of new protoplasm and cells (needed for growth and replacing dead cells)
- Aid in reproduction
- Used in the production of hormones
Roughage
- Also known as dietary fiber
- General term for indigestible fibrous materials derived from vegetables, fruits, carbohydrates, and proteins
- Main function is to add bulk to the diet, aiding digestion and healthy bowel function
- Easily digested by microorganisms in the intestinal tract
- Benefits:
- Stimulates peristaltic movement in the intestinal tract
- Reduces blood cholesterol
- Reduces the chance of bowel cancer or gall bladder stones
- Helps reduce excess weight gain
- Helps lower blood sugar levels
- Helps in the slow release of glucose in the blood
- Helps prevent constipation
Balanced Diet
- Provides all essential nutrients in proper proportions for proper growth and good health
- Needs vary according to age, weight, sex, physical conditions, metabolism, and climate
- Percentage composition:
- 60% carbohydrates
- 10% fats and oils
- 15% proteins
- 10% vitamins, mineral salts, and water
- Roughage essential for proper digestion
- Importance:
- Encourages proper growth and development
- Provides energy for metabolic processes
- Keeps us resistant to diseases
- Deficiency of nutrients leads to malnutrition
Kwashiorkor
- Protein-deficiency disease common in the tropics due to the high cost of protein foods.
- Symptoms:
- Changes in skin pigments
- Decreased muscle mass
- Loss of body weight
- Hair changes
- Irritation
- Diarrhea
- Severe infections
- Large belly
Enzymes
- Biological catalysts that accelerate metabolic reactions without changing their composition
- Proteinous in nature
- Characteristics:
- Specific in action
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Description
Test your knowledge on essential minerals and vitamins needed for metabolic activities. This quiz covers various classes of minerals, the role of vitamins in the body, and specifics about B-complex vitamins. Dive into the intricacies of nutrition and how these elements influence health.