Feel the Blank Iodine is used to identify

1. Complex carbohydrates
2. Simple carbohydrates
3. Proteins
4. Lipids

1. Complex carbohydrates

2. Simple carbohydrates

3. Proteins

4. Lipids

The answer is

1. Complex Carbohydrates

Explanation:

You can use an iodine solution to detect the presence of complex carbohydrates. The yellow-orange iodine will turn blue-black as it reacts with starch. (The iodine solution will show no reaction with simple carbohydrates or sugars.)

atp is used for energy.