Question

carbohydrates are biological molecules made of carbon, hydrogen, and oxygen. there are different types of carbohydrate molecules, each with unique functions in living things. select the true statements. potatoes, bread, and beans are sources of carbohydrates. organisms can quickly break down carbohydrates to release energy. all carbohydrates have the same chemical structure. monosaccharides are made by linking together many polysaccharides.

Explanation:

1. For "Potatoes, bread, and beans are sources of carbohydrates": Potatoes (starch), bread (starch), and beans (complex carbs) are known carbohydrate sources. This is true.
2. For "Organisms can quickly break down carbohydrates to release energy": Carbohydrates are a primary energy source, and cells can metabolize them (like glucose) rapidly for ATP production. This is true.
3. For "All carbohydrates have the same chemical structure": Carbohydrates include monosaccharides (e.g., glucose), disaccharides (e.g., sucrose), and polysaccharides (e.g., starch, cellulose) with different structures. So this is false.
4. For "Monosaccharides are made by linking together many polysaccharides": Polysaccharides are made by linking monosaccharides (the reverse is true). So this is false.

Answer:

The true statements are:

• Potatoes, bread, and beans are sources of carbohydrates.
• Organisms can quickly break down carbohydrates to release energy.