MCB 301 Biochemical Tests with correct answers

MCB 301 Biochemical Tests with correct
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answers

Glucose A/G - CORRECT ANSWERS ✔✔Both acid and gas made.
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Medium turns from blue to yellow. Gas bubble forms
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Glucose/Lactose/Raffinose/Sucrose A - CORRECT ANSWERS |\ |\ |\ |\ |\


✔✔acid made. Medium turns yellow
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Glucose/Lactose/Raffinose/Sucrose (A) - CORRECT ANSWERS |\ |\ |\ |\ |\


✔✔Little bit of acid made. Medium turns lime green, or yellowish
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in bottom of the tube and greenish at the top.
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Glucose/Lactose/Raffinose/Sucrose 0+ - CORRECT ANSWERS |\ |\ |\ |\ |\


✔✔no acid or gas made and growth is noted, medium is green
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Glucose/Lactose/Raffinose/Sucrose 0+/B - CORRECT ANSWERS |\ |\ |\ |\ |\


✔✔no acid or gas produced and growth is noted, medium turned
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blue


Glucose/Lactose/Raffinose/Sucrose 0- - CORRECT ANSWERS ✔✔no |\ |\ |\ |\ |\


acid or gas produced and no growth is noted. Organism not able
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to grow. repeat test.
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Manitol A - CORRECT ANSWERS ✔✔acid produced. Medium
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changed from purple to yellow |\ |\ |\ |\

, Manitol (A) - CORRECT ANSWERS ✔✔a little bit of acid made.
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Medium changed to grayish purple color (between yellow and
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purple).


Manitol 0+ - CORRECT ANSWERS ✔✔no acid produced and no
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growth. Medium remains purple and growth is noted.
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Manitol 0- - CORRECT ANSWERS ✔✔No acid produced and no
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growth noted. Organism couldn't grow, repeat test.
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MacConkey Agar A - CORRECT ANSWERS ✔✔growth occurred and
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all colonies are noticeably pinkish red. acid made.
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MacConkey Agar (A) - CORRECT ANSWERS ✔✔growth occurred.
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Most colonies are colorless, but some look a little bit pink/red
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MacConkey Agar 0+ - CORRECT ANSWERS ✔✔growth occurred
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and colonies are colorless. No acid produced.
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MacConkey Agar 0- - CORRECT ANSWERS ✔✔no growth occurred,
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inhibited by bile salts/crystal violet.
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Citric Acid + - CORRECT ANSWERS ✔✔growth and/or any blue
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color change in the medium
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Citric Acid - - CORRECT ANSWERS ✔✔no growth, no color change
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