Question

Carbohydrates, more commonly known as sugars, are made up of carbon, oxygen, and hydrogen atoms. The smallest unit of a carbohydrate is a monosaccharide. Two monosaccharides make up a disaccharide, and many monosaccharides make up a polysaccharide. Disaccharides and polysaccharides can be hydrolyzed back into the individual monosaccharide units.

Part A Select the statement that is incorrect.
1. Complex sugars are carbohydrates.
2. All carbohydrates have the general formula Cn(H2O)n.
3. Simple sugars are carbohydrates.
4. Carbohydrates contain only carbon, oxygen, and hydrogen atoms.
Part B
Complete the following sentences about carbohydrates. Match the words with the appropriate blank in the sentences below.
a. disaccharide
b. polysaccharide
c. carbohydrate
d. monosaccharide
1. A carbohydrate that yields many monosaccharides when hydrolyzed is a _______.
2. A simple sugar is composed of equal parts carbon and water, which gave rise to the general name of any sugar as a _________.
3. Lactose, the sugar in milk, is a ________, because it can be split into two monosaccharides.
4. A _________ cannot be hydrolyzed any further.

Answer 1

PART B

1. Polysaccharide

2.Carbohydrates

3. DISACCHARIDE

4. Monosaccharide

PART A

2 is incorrect

Step-by-step explanation:

PART A

The option 2 is incorrect because it is not in all carbohydrates that the number of atoms of carbon will be equal to the number of atoms of oxygen. This can be seen in the case of sucrose with the molecular formula C12H22O11

PART B

1. A carbohydrate that yields many monosaccharides when hydrolysed is a polysaccharides

2. The general name of any sugar is carbohydrate

3. Lactose is a double sugar meaning it contains 2 monosaccharides or simple sugar and thus when hydrolysed would be splitted into two simple sugars

4. A monosaccharide cannot be hydrolysed further because it’s at the simplest stage of any carbohydrate