A urease test is used to help identify Myobacterium tuberculosis because a. urea

Question

A urease test is used to help identify Myobacterium tuberculosis because a. urease is a sign of tuberculosis. b. M. tuberculosis produces urease. c. urease is part of an acid-fast cell wall. d. urea accumulates during tuberculosis. e. All of these choices are correct. The byproducts of lipid and protein catabolism enter the cellular respiratory pathway at what stage of the complete pathway? a. glycolysis. b. the electron transport chain. c. the pentose phosphate pathway. d. the Krebs cycle. e. the Entner-Doudoroff pathway.

Explanation / Answer

The answers are
5. M. tuberculosis produces urease.
Urea is the product in Amino acids metabolism. The urea hydrolysis produces ammonia and carbon di oxide. Due to the realize of ammonia, the medium ph shifted from slight acidic to alkali. In the phenol red reaction the color changes from yellow to pink which indiates the presence of urease.

6. The answer is d. The Krebs cycle.
The products of alpha and beta oxidations are Acetyl Co. A, the starting compound of Krebs cycle.

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