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Unit 10 SMG
EXAM 3
| Question | Answer |
|---|---|
| Crenarchaeotes whose optimal growth temperature is over 80°C are called | hyperthermophiles |
| How is it possible for haloarchaea to survive in environments such as the Great Salt Lake without lysis due to osmotic pressure? | They accumulate compatible solutes to prevent water loss. |
| Halobacterium salinarum and certain other extreme halophiles carry out light-driven synthesis of ATP under what condition? | low oxygen concentrations |
| Which archaeal phylum contains many extreme halophiles, methanogens, some marine hyperthermophiles, and Thermoplasma? | Euryarchaeota |
| Most haloarchaea use which of the following for electron donors? | amino and organic acids |
| Which statement is TRUE of methanogenic and extremely halophilic Archaea? | The methanogens are obligate anaerobes; the extreme halophiles are mostly obligate aerobes. |
| Methanogens | produce methane as a part of their energy metabolism. |
| What special adaptation(s) has/have Thermoplasma evolved to survive in hot acidic environments? | Thermoplasma stabilize their cytoplasmic membrane by incorporation of tetraether lipoglycans in the cytoplasmic membrane. |
| The phylum Nanoarchaeota has a single species. It is an organism that __________. | has a very small genome is incredibly small in size is a parasite |
| You discover a new type of archaeon. After analyzing its genome in the lab, you realize that it is missing the genes needed for glycolysis. What might you guess about this organism based on that information? | It is an obligate symbiont. |
| Hot sulfur-rich environments associated with terrestrial sulfur-rich springs are called | solfataras |
| Microsporidia were previously thought to be an early-branching taxon of Eukarya due to their parasitic lifestyle. However, new evidence suggests that they are more closely related to the | chytridiomycetes. |
| Which microbial group is responsible for massive amphibian die-offs worldwide? | chytrids |
| Primary endosymbioses gave rise to ________ and secondary endosymbioses gave rise to ________. | chloroplasts and mitochondria in plants and red and green algae / chloroplasts in other eukaryotes |
| Which of the following is NOT a unifying characteristic of diplomonads and parabasalids? | being multicellular |
| Dinoflagellates have flagella that enable motility and occur in both freshwater and marine waters. | True |
| Diatoms are | usually morphologically symmetric. |
| How can the amebozoans and radiolarians be distinguished from each other with microscopy? | Amebozoans have lobe-shaped pseudopodia, and radiolarians have threadlike pseudopodia, and radiolarians have radial symmetry. |
| The amoebozoa use what structures for movement and feeding? | lobe-shaped pseudopodia |
| In contrast to bacterial endospores, fungal spores have substantially less resistance to | Heat |
| Traditional classification of fungi by sexual spore type has been __________. | upheld by phylogenetic analysis |
| A fungus that is coenocytic, is involved in food spoilage, and produces asexual spores in a sac could be __________. | Rhizopus |
| The phylum Ascomycota contains __________. | single-celled yeast filamentous fungi fungi that can produce asexual spores that are not contained in a sac |
| What are the two main groups of green algae? | chlorophytes and charophyceans |
| All mushrooms are basidiomycetes. | True |
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