________ is a natural sugar that is used for energy.

Correct Answer: C

Rationale: The correct answer is C: Glucose. Glucose is a natural sugar that serves as the primary source of energy for the body's cells. It is derived from the foods we eat and is essential for various physiological functions. Sodium (A) is an electrolyte, not a sugar. Cholesterol (B) is a type of lipid, not a sugar. Gluten (D) is a protein found in wheat and other grains, not a sugar used for energy. Therefore, the correct choice is glucose, as it directly relates to being a natural sugar used by the body for energy.

Correct Answer: D

Rationale: The correct answer is D, Third-degree burn. This type of burn affects the epidermis, dermis, and underlying tissue, causing extensive damage. The epidermis and dermis are completely destroyed, leading to loss of sensation and potential scarring. First-degree burns (B) only affect the epidermis, while second-degree burns (A) involve the epidermis and part of the dermis. Partial-thickness burns (C) are a general term that can refer to both first and second-degree burns, but do not specifically indicate involvement of underlying tissue.

Correct Answer: C

Rationale: The correct answer is C: Increased lung capacity. Deep-breathing exercises involve taking slow, deep breaths, which can strengthen the respiratory muscles and improve the efficiency of oxygen exchange in the lungs. This leads to an increase in lung capacity over time. Choice A is incorrect as deep-breathing exercises actually help in clearing mucus from the respiratory system. Choice B is incorrect as deep-breathing exercises do not decrease salivary production. Choice D is incorrect as deep-breathing exercises actually help in increasing oxygen levels in the body by improving oxygen intake and utilization.

Correct Answer: C

Rationale: The correct answer is C because the musculoskeletal system stores calcium and phosphorous, which are essential minerals for bone health and muscle function. Calcium is stored in bones and released when needed for muscle contraction and other bodily functions. Phosphorous is also stored in bones and plays a crucial role in energy production and maintaining cell structure. The other choices are incorrect because storing vitamin D (A) is primarily done by the skin and liver, supplying oxygen to cells (B) is the function of the respiratory and circulatory systems, and transporting antibodies to cells (D) is the function of the immune system.

Correct Answer: C

Rationale: Step-by-step rationale: 1. Hyperglycemia means high blood sugar levels. 2. In hyperglycemia, the body turns to burning fat for energy. 3. This process is called lipolysis, where fats are broken down into fatty acids for energy production. 4. Burning fat helps lower blood sugar levels. 5. Burning sugar (choice A) can worsen hyperglycemia. 6. Burning proteins (choice B) is inefficient and can lead to muscle breakdown. 7. Burning minerals (choice D) does not provide energy. Summary: - Choice C is correct as burning fat is the body's method to find energy during hyperglycemia. - Choices A, B, and D are incorrect as they do not effectively address the energy needs during hyperglycemia.