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.
carbohydrates are the primary energy source for the human body.
some carbohydrates are used to store excess glucose in plant and animal cells.
disaccharides are large molecules made of hundreds of repeating units.
humans consume carbohydrates through foods like bread, pasta, and bananas.

Explanation:

• Carbohydrates are the primary energy source for the human body. Glucose (a carbohydrate) is broken down during cellular respiration to release energy in the form of ATP.
• Some carbohydrates are used to store excess glucose. In plants, starch is the storage form, and in animals, glycogen serves this purpose.
• Humans consume carbohydrates through various foods. Bread (contains starch), pasta (starch), and bananas (contain simple sugars like fructose and glucose) are examples.
• Disaccharides are not large molecules made of hundreds of repeating units. Disaccharides are made of two monosaccharide units. Polysaccharides (like starch, glycogen, cellulose) are large molecules made of hundreds or thousands of repeating monosaccharide units.

Answer:

• Carbohydrates are the primary energy source for the human body.
• Some carbohydrates are used to store excess glucose in plant and animal cells.
• Humans consume carbohydrates through foods like bread, pasta, and bananas.