Based on your observation of the pictured specimens that are growing on the Star

Question

Based on your observation of the pictured specimens that are growing on the Starch agar plates, select ALL appropriate conclusions.

Two different bacterial samples, A and B, were inoculated onto Starch agar. What can you conclude based on your observations (after adding iodine solution)?

Based on your observation of the pictured specimens that are growing on the Starch agar plates, select ALL appropriate conclusions.

Based on your observation of the pictured specimens that are growing on the Starch agar plates, select ALL appropriate conclusions.

Specimen A is able to hydrolyze starch Specimen A is able to convert starch to indole Specimen B is able to hydrolyze starch Specimen B is able to convert starch to indole

Explanation / Answer

C. Specimen B is able to hydrolyze starch

Specimen B is containing starch hydrolysable bacteria, which can be detected by adding iodine to the sample, the sample turns dark blue if it is positive. Indole is produced from the amino acid (tryptophan) but not from starch.

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

---

---

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