1. Why do Gram-positive bacteria appear purple after Gram staining? |
2. Why do Gram-negative bacteria appear reddish-pink after Gram staining? |
3. What do you know about the cell wall of Gram-positive bacteria? |
4. What do you know about the cell wall of Gram-negative bacteria? |
5. Is the bacterium E. coli Gram-positive or Gram-negative? |
6. What is the purpose of the washing steps during the Gram-staining procedure? |
7. Are Gram-stained bacteria dead or still alive? |
8. In the picture of yeast on page 7, label 1. refers to ___________ |
9. In the picture of yeast on page 7, label 2. refers to ___________ |
10. In the picture of yeast on page 7, label 3. refers to ___________ |
11. What are two major differences between prokaryotic and eukaryotic cell structures? |
12. What chemical associated with the cell wall gives Gram-positive bacteria their final color? |
13. In what ways are cyanobacteria like algae and land plants? |
14. In what ways are cyanobacteria different from algae and land plants? |
15. How can cyanobacteria, in contrast of saprotrophic bacteria, live in an environment that lacks organic nutrients? |
16. List one major type of obtaining organic nutrients and give an example of a protist with this type of nutrition. |
17. List one structure of locomotion found among protozoans and name an organism that uses this structure. |
18. List another structure of locomotion found among protozoans and name an organism that uses this structure. |
19. Name a protist that has both chloroplasts and flagella. |
20. Which structure makes the above protist algal like? |
21. Which structure makes the above protozoan like? |
22. How do slime molds obtain their nutrients? |
23. How do slime molds survive in conditions unfavorable to growth? |
24. Could an ecosystem that contains only protists remain in continued existence (i.e. sustainable)? |
25. Explain your answer for question 24. |
26. Both fungi and animals are heterotrophs but they are markedly different in how they acquire nutrients. Explain. |
27. List the name of one fungus that is made of single cells (unicellular). |
28. List the name of one fungus that is made of multiple cells (pluricellular). |
29. What is the functional purpose of spores in fungi? |
30. Are fungi autotroph organisms? |
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