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Related Flashcards
Cards In This Set
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17 A plant species lives in an area with limited sunlight. Which physical adaptation would be most useful to the plant? A colorful flowers B large leaves C deep roots D thin cuticl
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B
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19The crab Lybia tessellata carries a pair of sea anemones on its claws. The crab uses the sea anemone’s stinging tentacles as protection and the sea anemone obtains small food particles released by the crab as it feeds. Which type of symbiotic relationship does this best illustrate? A commensalism B mutualism C parasitism D predatio
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B
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20 Which substance is considered to be a factor affecting Earth’s ozone layer? A chlorofluorocarbons B ethyl alcohol C nitrogenD Water Vapor
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A
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21 RNA and DNA are which type of organic compound? A carbohydrate B lipid C nucleic acid D protei
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C
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22 A scientist treats a cell with a chemical that destroys the ribosomes. As a result, which cell process will be stopped? A osmosis B photosynthesis C protein synthesis D respiration
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C
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23Which is an example of osmosis? A potassium ions moving in and out of an animal cell B carbon dioxide moving into the leaf cells of a plantC oxygen moving into the bloodstream from the lungsD Water moving into the root cells of a plant
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D
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25. Two different species of bacteria are examined. Scientists find that Species X always produces CO2and H O2during cellular respiration. Species Y always produces ethyl alcohol and CO2. Which conclusion can be made from these observations? A Only Species Y is aerobic. B Only Species Y is anaerobic. C Both Species X and Y are aerobic. D Both Species X and Y are anaerobic.
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B
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26. Hitchhiker’s thumb (H) is dominant to no hitchhiker’s thumb (h). A woman who does not have hitchhiker’s thumb marries a man who is heterozygous for hitchhiker’s thumb. What is the probable genotypic ratio of their children? A 0% Hh 100 hhB 50% Hh 50% hhC 75% Hh 25%hhD 100% Hh: 0% hh
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B
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27. What advantage do sexually reproducing organisms have over asexually reproducing organisms? A genetic variation B genetic stabilityC increased fertilization rateD Increased reproduction rate
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A
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29. Which is a use of genetically engineered bacteria? A identifying the remains of an unknown person B developing a DNA fingerprint for blood left at a crime scene C making human insulin for diabetics D producing corn that is resistant to herbicides |
C
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30. Which types of organisms developed first due to the early environmental conditions on Earth? A prokaryotic and aerobic B prokaryotic and anaerobic C eukaryotic and aeobicD eukaryotic and anaerobic |
B
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