The structures of some monosaccharides are drawn below.
Which of the following statements are true regarding the two structures (Compounds I & II) drawn below?
Statement (1) - Compound I is glucose.
Statement (2) - Compound II is glucose.
Statement (3) - Compound II is fructose.
Statement (4) - Compound II is fructose.
|A||Statements 1 & 2|
|B||Statements 2 & 3|
|C||Statements 3 & 4|
|D||Statements 2 & 3|
Statements 1 and 2 are true. Both given structures are glucose; one is in the furanose ring form, and the other is in the pyranose ring form. The five-membered ring of glucose is called glucofuranose. The six-membered ring of glucose is called glucopyranose.