Question

what do potatoes, pasta, bread, beans, and bananas have in common? they are all sources of carbohydrates. carbohydrates are one of the three main types of biological macromolecules, or large carbon - based molecules, found in the foods we eat. the others are proteins and fats. carbohydrates are the primary source of energy for all living things!
image of various foods including bananas, potatoes, grains, pasta, etc.
carbohydrate molecules are made of carbon, hydrogen, and oxygen. there are different types of carbohydrate molecules, each with unique functions in living things. organisms’ cells can quickly break down many types of carbohydrates to release energy. carbohydrates can also be used to form cell structures or to store energy.
select the true statements.

• carbohydrates are made of carbon, hydrogen, and oxygen.
• living things use carbohydrates for energy.
• carbohydrates are found in all foods.
• some organisms use carbohydrates for structural support.

Explanation:

1. For "Carbohydrates are made of carbon, hydrogen, and oxygen": The text states "Carbohydrate molecules are made of carbon, hydrogen, and oxygen", so this is true.
2. For "Living things use carbohydrates for energy": The text says "Carbohydrates are the primary source of energy for all living things" and "Organisms’ cells can quickly break down many types of carbohydrates to release energy", so this is true.
3. For "Carbohydrates are found in all foods": The text only mentions they are in some foods (potatoes, pasta, etc.) and doesn't say all foods, so this is false.
4. For "Some organisms use carbohydrates for structural support": The text says "Carbohydrates can also be used to form cell structures", so this is true.

Answer:

• Carbohydrates are made of carbon, hydrogen, and oxygen.
• Living things use carbohydrates for energy.
• Some organisms use carbohydrates for structural support.