Please help !! how come the first carbon in glucose is considered to be an aldehyde while the rest are hydroxyl. why can't they all be the same?
this is for an assignment. thank u.

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum