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1 | |
Which of the following statements is/are true about microbes or microorganims? |
| | A) | The terms microbes and microorganisms can be used synonymously with the term bacteria. |
| | B) | Microbes are typically aquatic or found in very moist environments. |
| | C) | Colonial microbes generally live "connected to" each other - but do not show any signs of communication or cooperation. |
| | D) | All of the above. |
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2 | |
Many researchers believe that the known bacteria represent only about __________ of all the bacteria on earth. |
| | A) | 1% |
| | B) | 10% |
| | C) | 20% |
| | D) | 40% |
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3 | |
Which of the following statements is/are true about Gram staining? |
| | A) | Gram staining is a differential staining procedure. |
| | B) | Methylene blue and iodine are used to perpetrate the Gram reaction. |
| | C) | There are four major Gram staining results. |
| | D) | All of the above. |
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4 | |
Which of the following activities can be attributed to bacteria? |
| | A) | Bacteria produce the enzymes necessary for a cow to metabolize cellulose. |
| | B) | Bacteria are used to digest organic wastes and the methane produced can be used as a source of fuel. |
| | C) | Bacteria have a symbiotic relationship with the roots of many plants and in the process provide the plants with usable forms of nitrogen. |
| | D) | All of the above. |
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5 | |
Which of the following statements is/are true about pathogens? |
| | A) | A majority of the known bacteria are pathogenic. |
| | B) | Many bacteria are pathogenic because they produce toxins that react with the host. |
| | C) | Almost all pathogenic bacteria form endospores. |
| | D) | All of the above. |
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6 | |
When considering kingdom Protista, it is important to remember that |
| | A) | The autotrophic unicellular organisms are algae. |
| | B) | The heterotrophic unicellular organisms are protozoa. |
| | C) | Slime molds are usually considered to be funguslike protists. |
| | D) | All of the above. |
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7 | |
Which of the following statements about algae is/are true? |
| | A) | All algae have a cellulose cell wall. |
| | B) | Phytoplankton consists of small floating or weakly swimming, photosynthetic organisms. |
| | C) | Benthic organisms live attached to the bottom of to objects in the water. |
| | D) | All of the above. |
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8 | |
Which of the following statements about algae is/are true? |
| | A) | A massive increase in algal population is known as a bloom. |
| | B) | Some species of dinflagellates are toxic, especially in bloom form. |
| | C) | Multicellular algae are commonly known as seaweed. |
| | D) | All of the above. |
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9 | |
Which of the following statements about the animal-like protists is/are true? |
| | A) | All protists are motile. |
| | B) | Foraminiferan shells form limestone. |
| | C) | Certain amoebas are responsible for the termite's ability to digest wood. |
| | D) | All of the above. |
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10 | |
When discussing the malarial parasite, it is important to remember that |
| | A) | Humans are infected with malaria when they are bitten by the Anopheles mosquito. |
| | B) | The male and female gametocytes are produced in the human blood stream. |
| | C) | The Plasmodium zygote is formed in the stomach of the mosquito. |
| | D) | All of the above. |
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11 | |
Which of the following statements about the funguslike protists is/are true? |
| | A) | The Acrasiomycota do not undergo mitosis; their DNA reproduces by some as yet undetermined method. |
| | B) | The water molds are important for a good wine crop in parts of France. |
| | C) | The Myxomycota reproduce internally but do not form cell walls within the new cells. |
| | D) | All of the above. |
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12 | |
In considering Penicillium, it is important to remember that |
| | A) | There are over 100 species of Penicillium and so it is difficult to make generalizations. |
| | B) | It is a Penicillium that is responsible for many blue cheeses, including Roquefort cheese. |
| | C) | Some members of the genus Penicillium produce no color. |
| | D) | All of the above. |
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13 | |
Fungi having a symbiotic relationship with plant roots are known as |
| | A) | Mycotoxins. |
| | B) | Mycorrhizae. |
| | C) | Saprophytes. |
| | D) | None of the above. |
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14 | |
Q:Claviceps purpurea is a sac fungus that |
| | A) | Is a parasite on rye and other grains. |
| | B) | Produces a toxin that can cause hallulcinations. |
| | C) | Can be used to treat high blood pressure and to stop bleeding after childbirth. |
| | D) | All of the above. |
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15 | |
When considering lichens, it is important to remember that |
| | A) | The fungus provides the environment and the alga produces the food. |
| | B) | Lichens are found from the frigid arctic to the scorching dessert. |
| | C) | Lichens are sometimes used as pollution indicators. |
| | D) | All of the above. |
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16 | |
Fire blight and citrus canker are plant diseases caused by |
| | A) | bacteria. |
| | B) | fungi. |
| | C) | protozoa. |
| | D) | viruses. |
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17 | |
Which of the following is required to destroy bacterial endospores? |
| | A) | boiling water |
| | B) | sun light |
| | C) | 121 degrees Celsius, for 15-20 minutes under pressure |
| | D) | 100 degrees Celsius for 10 minutes |
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18 | |
Which of the following is a fungus-like protistan? |
| | A) | slime mold |
| | B) | diatom |
| | C) | red algae |
| | D) | althele's foot |
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19 | |
Photosynthesis can occur in which zone? |
| | A) | upper portion of a lake |
| | B) | in the neritic zone |
| | C) | photic zone |
| | D) | all these are correct |
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20 | |
Which is NOT a product of algae? |
| | A) | alginate |
| | B) | carrageenin |
| | C) | agar |
| | D) | mycotoxin |
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21 | |
The vector of malaria is |
| | A) | a ciliated protozoan. |
| | B) | the mosquito, Anopheles. |
| | C) | a Sporozoan. |
| | D) | the common housefly. |
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22 | |
The first chemical used against plant diseases was a copper-based fungicide called |
| | A) | DDT. |
| | B) | penicillin. |
| | C) | Bordeaux mixture. |
| | D) | silver phosphate. |
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23 | |
Corn smut, fairy rings, and toadstools are all |
| | A) | fungi. |
| | B) | algae. |
| | C) | bacteria. |
| | D) | protozoa. |
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24 | |
Protista differ from Prokaryotae in that Protista |
| | A) | are unicellular. |
| | B) | can be autotrophs or heterotrophs. |
| | C) | can have cell walls. |
| | D) | are composed of eukaryotic cells. |
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25 | |
Pathogenic bacteria cause |
| | A) | malaria and amoebic dysentery. |
| | B) | ringworm and athlete's foot. |
| | C) | strep throat, syphilis, and pneumonia. |
| | D) | all of the above. |
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26 | |
Which of the following involves a mutualistic relationship? |
| | A) | lichen |
| | B) | mycorrhizae |
| | C) | methanogens |
| | D) | all of the above |
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27 | |
Which one of the following is a protistan? |
| | A) | slime mold |
| | B) | yeast |
| | C) | moss |
| | D) | cyanobacteria |
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28 | |
Small organisms which float and move with water currents are |
| | A) | endospores. |
| | B) | benthic. |
| | C) | plankton. |
| | D) | colonial. |
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29 | |
Heterotrophic organisms can be found in the kingdom |
| | A) | Prokaryotae. |
| | B) | Protista. |
| | C) | Mycatae. |
| | D) | all of the above. |
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30 | |
Mushrooms can produce ________ of spores. |
| | A) | hundreds |
| | B) | thousands |
| | C) | millions |
| | D) | billions |
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31 | |
_________ produced by mushrooms are poisonous and/or hallucinogenic to humans. |
| | A) | Antibiotics |
| | B) | Alcohols |
| | C) | Mycorrhizae |
| | D) | Mycotoxins |
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