If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Elements of life

Problem

The following table shows the relative percentages of elements in a certain biological molecule.
ElementPercentage of total
Carbon (C)46%
Nitrogen (N)0%
Phosphorus (P)0%
Oxygen (O)51%
Sulfur (S)0%
Hydrogen (H)3%
Which of the following best describes the biological molecule?
Choose 1 answer: