s-The Building Blocks of Life:Carbohyatrates . You test several unknowns and obt

Question

s-The Building Blocks of Life:Carbohyatrates . You test several unknowns and obtain the following results RESULTS OF LUGOL'S TESTI Yellow RESULTS OF RESULTS OF NINHYDRINTEST BENEDICT's TEST Blue Orange Blue Cloudy blue | Clear Black Clear Brown Clear a. Which solution contains starch? b. Which solution is most likely glucose? c. Which solution contains an amino acid other than proline? 7. What are some good sources of carbohydrates, proteins, and fats in a typical breakfast, lunch, and dinner? AA, 0.66, AA, 0.50, AA,0.80.A mixture of three amino acids yields spots that are 2 cm, 5.2 cm and 6.4 cm from the origin. The solvent front is 8.0 cm fron the origin. Which three of the four amino acids are contained in the nixture? 8. Four known amino acids (AA) produce a chromatograph with R, values as follows: AA, 0.25, 9. In winter, plants exchange the saturated lipids in their membeanes for unsaturated lipidh. Unsaturated what advantage would this be for herbaceous planes chat live through the winter? (Hint: what happens to bacon grease or the grease on top of soup when you put it in the refrigerator?) lipids are "bent" and keep the membranes more fluid because they cannot be stacked closcly together. Of

Explanation / Answer

1. Solution III contains starch as the Lugol's iodine yields a blue-black color in the presence of starch.

2. Solution II contains glucose. Benedict's test is used for the identification of glucose. Benedict's reagent is aqua-blue in color and turns its color from ellow to orange when heated with a reducing sugar like glucose.

3. Solution I. Ninhydrin test is used for the identification of amino acids.

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.