Answer: (D) All of the above
Explanation: Antioxidants are abundant in various everyday foods, including fruit berries, black tea, and a wide range of fruits and vegetables. All these options are sources of antioxidants, which help protect the body from oxidative stress.

Answer: (A) Drying
Explanation: Drying is one of the oldest methods of food preservation. It reduces the moisture content in food, preventing the growth of microorganisms and extending the shelf life of the food.

Answer: (B) Fermentation
Explanation: Fermentation is a biological method of food preservation where microorganisms like bacteria or yeast convert sugars into acids, gases, or alcohol, which help inhibit spoilage and extend the shelf life of food.

Answer: (D) All of the above
Explanation:  Food additives can serve multiple purposes, including improving nutritional value, preserving food, and enhancing taste and appearance, making “All of the above” the correct choice.

Answer: (A) Acids
Explanation: Acids help preserve food by lowering the pH, creating an environment where bacteria and other microorganisms struggle to grow.

Answer: (C) Lysine
Explanation: Lysine is an essential amino acid, meaning the body cannot synthesize it and must obtain it through the diet.

Answer: (A) Shape and function
Explanation: The sequence of amino acids in a protein dictates how it folds, which ultimately determines its shape. The shape of the protein, in turn, defines its function.

Answer: (C) Glucose
Explanation: Glucose is a carbohydrate (specifically a monosaccharide), while hemoglobin, keratin, and insulin are all proteins.

Answer: (B) Chicken breast
Explanation: Chicken breast is a lean meat that is well-known for its high protein content compared to fruits, vegetables, and bread, making it the richest source of protein among the options provided.

Answer: (C) A diet that provides all essential nutrients in the right proportions
Explanation: A balanced diet includes the appropriate amounts of all essential nutrients such as carbohydrates, proteins, fats, vitamins, and minerals, ensuring the body functions optimally.