أبتسم ليس بالضرورة فرحا إنما ثقة وتفاؤل بأن ربك لن يخيب ظنك😍😍

❤️Name test

⭕️ catalase test

💙Used test

⭕️ different between staphylococcus (+) and Streptococcus (-)

💚 Mechanism of action

⭕️ enzyme that breaks hydrogen peroxide into water and oxygen

❤️Name test

⭕️ oxidase test

💙Used test

⭕️ different between pseudomonas spp. (+) and entrobateriaceae(-).

💚The mechanism of action

⭕️ bacterium to produce the enzyme cytochrome- c oxidase, capable of reducing oxygen.

❤️Name test

⭕️ coagulase test

💙Used test

⭕️ different between staph. aureus(+) and staph. Epidermidis or staph. saprophyticus (-)


💚Mechanism of action

⭕️coagulate plasma by action of this enzyme ( coagulase ), this enzyme has prothrombin like effect, that convert fibrinogen to fibrin.

❤️Name test

⭕️ urine hydrolysis test

💙Used test

⭕️different between poteus spp. (+ pink) and salomella or shigella (- Yellow )

💚Name indicator

⭕️ phenol red

❤️Name test

⭕️ Indole test

💙Used test

⭕️ different between entrobacteriaceae spp


💚The mechanism

⭕️ Bacteria use an enzyme, tryptophanase to break down the amino acid, tryptophan, which makes by-products, of which, indole is one.

❤️Name test

⭕️ methyl red test

💙Used test

⭕️ different between E. Coli (+ red) and enterobacter aerogenes(- Yellow )

💚The mechanism

⭕️ MR—tests for acid end products from glucose fermentation.

❤️Name test

⭕️ voges proskauer test

💙Used test

⭕️ different between E. Coli (- Yellow ) and enterobacter aerogenes (+ red)


💚The mechanism

⭕️ VP—tests for acetoin production from glucose fermentation.

❤️Name test

⭕️ simmons citrate test

💙Used test

⭕️ different between E. Coli (-green ) and enterobacter aerogenes (+ blue )


💚The mechanism

⭕️ theselective for bacteria that has the ability to consume citrate as its sole source of carbon and ammonium as sole nitrogen source.

❤️IMVC test

❤️Triple Sugar Iron Agar

Biochemical tests

نفس السؤال بس شفنه zone of inhibition شنو حيكون الجواب؟

سيهونها الله عليك ❤️ لا تقلق🥺