Complete the following sentences. Match the words in the left-hand column with the appropriate blank in the sentences in the right-hand column.
1. If a carbohydrate, like xylulose, has five carbon atoms and a carbonyl group on the second carbon, it is called a(n)______.
2. With the carbonyl group on the end of a six-carbon chain, the carbohydrate would be classified as a(n)_.
3. Any carbohydrate with the carbonyl group on the second carbon is a(n)_.
4. A monosaccharide is a(n).
5. The most common carbohydrate.
6 Glyceraldehyde is an example of a(n)____.
a. aldose
b. ketose
c. aldohexose .
d. triose
e. glucose
f. ketopentose

1) A ketopentose. A ketopentose is a monosaccharide that contains five carbon atoms and a ketone functional group. It has a chemical formula of C5H10O2.

2) An aldose. A carbohydrate with six carbon chains and a carbonyl group at the end is called an aldose. All aldoses have their carbonyl group at the end of the chain.

3) A ketose. Ketoses have their carbonyl group in the middle of the carbon chain.

4) A monosaccharide is an aldohexose.

5) Glucose is the most common carbohydrate with the chemical formula C6H12O6.

6) A triose. Glyceraldehyde is a triose with the chemical formula C3H6O3. It is a crystalline, sweet, colourless solid.