Question

question 1
match the description on the left with the correct term on the right.
column a

1. brown paper bag squares
2. benedicts solution
3. biuret reagent
4. lugols lodine solution

column b
a. protein test
b. starch test
c. lipids test
d. nucleic acid test
e. glucose test

Explanation:

• Brown paper bag squares: Used to test for lipids. Lipids leave translucent spots on brown paper.
• Benedict's solution: Tests for reducing sugars (like glucose). A color change (from blue to green/yellow/red) occurs in the presence of reducing sugars.
• Biuret Reagent: Tests for proteins. A color change (from blue to violet/purple) occurs in the presence of peptide bonds (in proteins).
• Lugol's iodine solution: Tests for starch. A color change (from brown to blue - black) occurs in the presence of starch.

Answer:

1. c. Lipids test
2. e. Glucose test
3. a. Protein test
4. b. Starch test