Testing For Macromolecules

Question 1

Carbs

Answer 1

Subunits- C, H, and O (glucose)

Purpose- energy

Reagent- starch- iodine
Sugar- Benedicts

Positive test- iodine- blueish black
Benedicts- range of colours

Question 2

Proteins

Answer 2

Subunits- amino acids

Purpose- energy, muscle

Reagent- biuret

Positive test- pink or purple

Question 3

Lipids

Answer 3

Subunits- phospholipids and triglyceride

Purpose- energy storage

Reagent- brown paper test

Positive test- translucent

Question 4

Nucleic acid

Answer 4

Subunits- DNA/RNA

Purpose- Carry DNA/RNA

Reagent- N/A

Positive test- N/A