Biology · General Awareness
Nutrition and Food Sources
2,818 Questions
Nutrition and Food Sources questions test your knowledge of vitamins, dietary minerals, carbohydrates, and specialized dietary principles. This topic is commonly asked in railway, SSC, and UPSC exams. Review these questions to master the biological and health aspects of human nutrition.
Vitamins and mineralsDietary fiber sourcesMacronutrient functionsNaturopathic diet principlesOmega-3 fatty acids
Nutrition and Food Sources Questions
B
Correct answer
Explanation
Although young children require energy-dense diets for growth, they should not be encouraged to eat a lot of fatty foods, particularly those high in saturated fats. Instead, they need a balanced diet with healthy fats, proteins, and carbohydrates to support development without promoting unhealthy habits.
B
Correct answer
Explanation
Standard dietary guidelines, such as the Eatwell Guide, recommend basing meals on starchy carbohydrates rather than protein. Protein is essential but should make up a smaller portion of the overall daily food intake compared to carbohydrates, fruits, and vegetables.
A
Correct answer
Explanation
Many fruits and vegetables, such as cucumber, watermelon, and tomatoes, consist of over 90% water. Eating these foods contributes significantly to our overall daily fluid intake.
-
Red meat
-
Milk
-
Baking powder
-
Kiwi fruit
B
Correct answer
Explanation
Dairy products like milk, cheese, and yogurt are exceptionally rich sources of calcium, which is vital for building and maintaining strong bones and teeth. While other foods contain calcium, milk is one of the most bioavailable and common dietary sources.
-
To make jams set.
-
To prevent fats going rancid.
-
To prevent the destruction of vitamins A and C.
-
To prevent the browning of vegetables
A
Correct answer
Explanation
Antioxidants are used in food preservation to prevent oxidation, which causes fats to go rancid, vitamins to degrade, and cut fruits or vegetables to turn brown. Making jams set is a function of gelling agents like pectin, not antioxidants.
-
By using brown sugar instead of white.
-
By using caster sugar instead of granulated.
-
By using fruits canned in syrup.
-
By using an artificial sweetener
D
Correct answer
Explanation
Artificial sweeteners provide a sweet taste with little to no sugar or calories, making them an effective substitute for reducing dietary sugar. Brown sugar, caster sugar, and fruits canned in syrup all contain high amounts of sucrose or other simple sugars.
-
Meat, eggs and cheese.
-
Bread, potatoes and pasta.
-
Milk, oranges and oily fish.
-
Tofu, mycoprotein and rice.
B
Correct answer
Explanation
Bread, potatoes, and pasta are rich sources of starch, which is a complex carbohydrate. While foods like milk and oranges contain some carbohydrates (lactose and fructose), options like meat, eggs, cheese, and oily fish are primarily sources of protein and fat.
-
By eating chicken and fish instead of red meat.
-
By drinking whole milk.
-
Using oils instead of spreads.
-
Using white fats instead of low spreads.
A
Correct answer
Explanation
Chicken and fish generally contain less total and saturated fat compared to red meats like beef or pork. Choosing these leaner protein sources, along with removing poultry skin, is an effective way to lower overall dietary fat intake.
-
Soya Beans
-
Quinoa
-
Meat
-
Lentils
C
Correct answer
Explanation
Meat is derived directly from animal tissues, making it a primary source of animal protein. Soya beans, quinoa, and lentils are all plant-derived foods that provide plant-based proteins.
B
Correct answer
Explanation
Children require a relatively high intake of protein relative to their body weight to support rapid growth, tissue repair, and development. A low protein intake during childhood can lead to stunted growth and other developmental issues.
B
Correct answer
Explanation
High biological value (HBV) proteins contain all the essential amino acids that the human body cannot make itself. Nuts are considered to have a low biological value (LBV) because they lack one or more of these essential amino acids, meaning the statement is false.
-
Peanuts
-
Fish
-
Carrots
-
Insects
C
Correct answer
Explanation
Carrots are root vegetables that are high in vitamins and fiber but contain very little protein. Peanuts, fish, and insects are all excellent sources of protein.
-
Enzymes
-
Hormones
-
Bacteria
-
Microbes
A
Correct answer
Explanation
Enzymes are biological catalysts naturally present in food that drive chemical reactions, leading to natural ripening, aging, and eventual breakdown of the food tissue. While bacteria and microbes also break down food, enzymes are the intrinsic biochemical agents that cause natural self-decomposition.
-
strawberries
-
licorice
-
seafood
-
chocolate
D
Correct answer
Explanation
Phenylethylamine (PEA) is a natural stimulant that is famously found in chocolate. While it is associated with the feelings of excitement and attraction, most dietary PEA is rapidly broken down by enzymes in the digestive tract before reaching the brain.
-
Banana
-
Chocolate Milk
-
Powerade
-
Pepsi
D
Correct answer
Explanation
Pepsi contains high amounts of sugar and caffeine, which can exacerbate dehydration rather than help replenish lost fluids and electrolytes. Bananas, chocolate milk, and sports drinks like Powerade are excellent post-exercise options because they provide essential electrolytes, carbohydrates, and proteins.