Multiple choice general knowledge science & technology

A biological catalyst capable of speeding up a chemical reaction is known as:

  1. DNA

  2. Lipid

  3. Polysaccharide

  4. Enzyme

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

Enzymes are biological catalysts - proteins that speed up chemical reactions in living organisms without being consumed themselves. They work by lowering the activation energy needed for reactions to occur. DNA carries genetic information, lipids are fats, and polysaccharides are carbohydrates - none of these are catalysts.