Which of the Following Compounds is an Aldotetrose

Question

Which of the following compounds is an aldotetrose?
A) threose
B) ribose
C) arabinose
D) xylose

Accepted Answer

An aldotetrose is a 4-carbon monosaccharide with an aldehyde functional group (-CHO) at the end of its carbon chain. Threose, ribose, arabinose, and xylose are all monosaccharides, but only threose is a 4-carbon sugar with an aldehyde group at the end of its carbon chain, making it the only aldotetrose among the given options.