mordant in acid- fast staining? A. Basic fachsin B. Heat C. Methy lene blue D. A

Question

mordant in acid- fast staining? A. Basic fachsin B. Heat C. Methy lene blue D. Acid-alcobol 25- Which stain is a differential stain? A. gram stain B. capsule stain C. acid fast stain D. both a and c 26-Most bacteria belong to this metabolic group A. Chemoorganotrophs B. Chemolithotrophs C. Photoheterotrophs D. None of these 27-Agar, a complex polysaccharide is isolated from A. Seaweeds B. Tree barks C. Tree stem D. None of these 28-What are two commonly used isolation procedures for obtaining pure cultures A. B. C. D. Streak and pour plate Streak and loop plate Quadrant and radiant streak All of the above 29-Molds are fungi that grow in the form of multicellular filaments called A. Septa B. Hyphae C. Blastospore D. Pseudohyphac 30-Helicobacter pylori is a microaerophile that prefer to grow in A. B. C. D. No oxygen 2-10 % ofoxygen 20 % of oxygen B and C 31-Fluid thioglycollate medium (FTM) is a rich medium that supports the growth of A. Aerobic organisms B. Anaerobic organisms C. Both A and B D. None of the above 32-What is a colony? A. B. C. D. A mass of cells that derived from a single cell Cells from different species A and B None of these

Explanation / Answer

24 -A -Basic fuschin

25 -D -both A and c

26-B- Chemolithotrophs

27 -A- Sea weeds

28- D- all the above

29-B- Hyphae

30- B - 2-10 % of oxygen

31- B- anaerobes

32- A- A mass of cells that derrived from a single cell

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