Question

before the cells in a persons body can use the food that the person eats, the food must be
a. chemically broken down into sugar.

b. physically changed into a solid.

c. chemically changed into heat.

d. physically heated to 100°c.

Explanation:

To determine the correct answer, we analyze each option:

• Option A: During digestion, food (especially complex carbohydrates like starches) is chemically broken down into simpler sugars (e.g., glucose) that cells can use. This is a key part of the metabolic process.
• Option B: Food isn't physically changed into a solid for cellular use; digestion involves breakdown into small molecules, not solid - state transformation.
• Option C: Food is broken down into energy - rich molecules (like ATP), not directly "changed into heat" in the way described. Heat is a by - product of metabolism, not the end - product of food breakdown for cellular use.
• Option D: Heating food to 100°C is a cooking process, not related to how cells in the body use food. The body's metabolic processes for using food are chemical, not simple physical heating.

Answer:

A. chemically broken down into sugar