Across
- 2. Which agar is selective for gram-negative rods and differential for lactose fermentation?
- 3. What is the name of the counterstain generally used for gram staining?
- 5. Term describing media of which exact chemical composition is unknown?
- 9. Which reagent is used in the citrate test?
- 10. What are chains of spherical cells called?
- 11. Which primary stain is used for acid fast staining?
- 13. What does breaking/cracking of the agar indicate?
- 14. What color do gram-positive cells stain?
- 16. Which organisms need oxygen because they cannot ferment or respire anaerobically and are poisoned by high concentrations of oxygen?
- 18. Which metabolic process is responsible for converting a carbohydrate, such as starch or a sugar, into an alcohol or acid?
- 20. The appearance of a positive Methyl red test is?
- 22. Is it better to use an older or younger organism for the endospore stain?
- 23. An IMVIC test that results in a ++-- is indicative of which organism?
- 24. What are pairs of rod shaped organisms called?
Down
- 1. Which stain is responsible for the color given to spores?
- 4. What is Kovac’s reagent used to identify in the SIM medium?
- 6. What is the most critical step when doing a gram stain?
- 7. Does TSI medium contain a lower concentration of glucose, sucrose or lactose?
- 8. What is the substrate for hydrogen sulfide production in the TSI agar?
- 12. Which organisms is Phenyl Ethyl Alcohol agar selective for?
- 15. What is the term for the cell surrounding the spore?
- 17. Which media ingredient supplies amino acids?
- 19. Which process kills the bacterial cells and causes them to adhere to the glass so that they do not get washed off during staining?
- 21. Is Phenyl Ethyl Alcohol agar selective or differential?