When D-Erythrose Is Treated with NaBH₄/H₂O, It Forms _______

question 70

Multiple Choice

When D-erythrose is treated with NaBH₄/H₂O, it forms _______.

• A) a racemic mixture of alditols
• B) a meso alditol
• C) an optically active alditol
• D) an optically active aldonic acid
• E) none of these

---

Definitions:

Beta-pleated Sheet

A beta-pleated sheet is a common protein secondary structure formed by parallel or antiparallel beta-strands linked together by hydrogen bonding.

Carbohydrate

Organic compounds, such as sugars, starches, and cellulose, consisting of carbon, hydrogen, and oxygen, that are an essential source of energy for living organisms.

Lipid

A class of organic compounds that are fatty acids or their derivatives, insoluble in water but soluble in organic solvents, used for energy storage, as structural components of cell membranes, and in signaling.

Nucleic Acid

Macromolecules essential for life, including DNA and RNA, which carry genetic information in cells.