Multiple choice

Phosphorus is a structural element in

  1. proteins

  2. carbohydrates

  3. DNA

  4. cytochrome

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Phosphorus is a fundamental component of the sugar-phosphate backbone in DNA and RNA. It is also found in ATP and phospholipids, but it is not a structural part of simple proteins or carbohydrates.