Question

the process of linking monosaccharides together to make disaccharides is called dehydration synthesis. dehydration means loss of water. during dehydration synthesis, water is released when two monosaccharides chemically combine. many more monosaccharides can continue to be added to the chain, forming a large molecule called a polysaccharide.
the reaction below shows a dehydration synthesis reaction.
select the true statements.
disaccharides break into monosaccharides during dehydration synthesis.
water is a product of a dehydration synthesis reaction.
many monosaccharides combine by dehydration synthesis to make a polysaccharide.
long chains of monosaccharides form a disaccharide.

Explanation:

• For the first statement: Dehydration synthesis is about building up (linking monosaccharides to form disaccharides or polysaccharides), not breaking down. So "Disaccharides break into monosaccharides during dehydration synthesis" is false.
• For the second statement: As per the text, "During dehydration synthesis, water is released when two monosaccharides chemically combine". So water is a product, and "Water is a product of a dehydration synthesis reaction" is true.
• For the third statement: The text says "Many more monosaccharides can continue to be added to the chain, forming a large molecule called a polysaccharide". So "Many monosaccharides combine by dehydration synthesis to make a polysaccharide" is true.
• For the fourth statement: Long chains of monosaccharides form a polysaccharide, not a disaccharide (a disaccharide is made of two monosaccharides). So "Long chains of monosaccharides form a disaccharide" is false.

Answer:

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