Microbiology Lect Exam 1 Website
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Created by:
txibarra Plus on February 17, 2011
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31 terms
Terms | Definitions |
|---|---|
 Which of the following terms best describes the first primitive eukaryotes? | Single Celled |
| Endosymbiosis proposes that | eukaryotic cells arose when a much larger prokaryotic cell engulfed smaller bacterial cells that eventually developed into organelles. |
| Identify which of the following is theorized to have developed and can be explained by the endosymbiotic theory. | mitochondria |
| Eukaryotic flagella whip back and forth rather than rotating. This is because within a eukaryotic flagellum we typically find | a 9+2 arrangement of microtubules which slide past each other during movement. |
| Eukaryotic cells have several structural attributes which separate them from prokaryotes. Which of these attributes are found in eukaryotes, but NOT found in prokaryotes? | larger size, organelles, nuclear membrane |
| Before mitosis, chromosomes are visible only as | chromatin |
| Where is the site for protein modification in a eukaryotic cell? | in the Golgi complex |
| Lysosomes are vesicles that | are involved in intracellular digestion of food particles. |
| The bulk of the energy required by the eukaryotic cell is generated by the mitochondria. The mitrochondrion consists of cristae that | are elaborate folds on the inner membrane which hold the enzymes and electron carriers of aerobic respiration. |
| Chloroplasts convert the solar energy from sunlight into | chemical energy. |
| Ribosomes are found free within the cytoplasm as well as bound to rough endoplasmic reticulum. They are the sites of | protein synthesis. |
| Identify the structure that does NOT have a double membrane protecting it. | ribosome |
| The Kingdom Fungi, or Myceteae, consist of macroscopic fungi and microscopic fungi. Identify the microscopic fungi from the following list: | yeast |
| Most fungi are _____________, and get their food via _________ | saprobes, extracellular digestion. |
| Which of the following is NOT one of the four major divisions among terrestrial fungi? | zygomycota ascomycota basidiomycota Correct answer: mastigophora |
| Filamentous fungi | have hyphae that make up mycelia. |
| Mycoses are | fungal infections. |
| Kingdom Protista includes | algae & protozoans. |
| Protozoa are primarily | free-living |
| Protist survival is limited mainly by | availability of moisture. |
| Protozoans are often able to survive changing environmental conditions by forming | cysts |
| Algae can cause health problems because | they may produce toxins. |
| Helminths are | animals. |
| Identify the helminth that reproduces through eggs released from proglottids. Correct answer: | tapeworm |
| Evidence from paleontology indicates that the first eukaryotic cells appeared on the earth approximately 2 billion years ago. | true |
| The biologist responsible for the formulation of the endosymbiotic theory is Dr. Lynn Margulis. | true |
| The cell walls of fungi and algae are rigid and provide structural support and shape, and are similar to prokaryotic cell walls in chemical composition. | false |
| Most fungi can only reproduce sexually via spores. | false |
| Red tide is the result of an elaborate "bloom" of protozoans. True | false |
| Pfiesteria piscicida is a toxic algal form that is associated with neurological disease symptoms | true |
| Helminths are identified in the laboratory by microscopic examination of body fluids and excretions containing the eggs and larvae. | true |
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