Question

the reaction below shows a dehydration synthesis reaction. select the true statements. long chains of monosaccharides form a disaccharide. water is a product of a dehydration synthesis reaction. many monosaccharides combine by dehydration synthesis to make a polysaccharide. disaccharides break into monosaccharides during dehydration synthesis.

Explanation:

1. For "Long chains of monosaccharides form a disaccharide": A disaccharide is formed from two monosaccharides, long chains (many monosaccharides) form polysaccharides. So this is false.
2. For "Water is a product of a dehydration synthesis reaction": In dehydration synthesis, a water molecule is removed (produced) when monomers bond, as seen in the reaction (water is a product here). So this is true.
3. For "Many monosaccharides combine by dehydration synthesis to make a polysaccharide": Dehydration synthesis is the process where multiple monosaccharides (monomers) link via removing water to form polysaccharides (polymers). So this is true.
4. For "Disaccharides break into monosaccharides during dehydration synthesis": Breaking down (hydrolysis) uses water to split disaccharides into monosaccharides; dehydration synthesis is for building, not breaking. So this is false.

Answer:

The true statement is: "Water is a product of a dehydration synthesis reaction." and "Many monosaccharides combine by dehydration synthesis to make a polysaccharide." (Note: The other two statements are incorrect. A disaccharide is formed from two monosaccharides, not long chains; and dehydration synthesis is for building (polymerization), while breaking down (like disaccharides to monosaccharides) is hydrolysis, not dehydration synthesis.)

Corrected true statements:

• Water is a product of a dehydration synthesis reaction.
• Many monosaccharides combine by dehydration synthesis to make a polysaccharide.