Quiz 2-Form1 2009

Quiz 2-Form1 2009 - BIL 150 QUIZ 2-FORM 1 FALL 2009 1....

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BIL 150 QUIZ 2-FORM 1 FALL 2009 1. Which one of the following molecules is most likely to diffuse most easily across the plasma membrane? A. water B. glucose C. glycerol D. nitrogen E. Na + 2. Celery stalks that are immersed in fresh water for several hours become stiff and hard. Similar stalks left in a salt solution become limp and soft. From this we can deduce that the cells of the celery stalks are A. hypertonic to both fresh water and the salt solution. B. hypotonic to both fresh water and the salt solution. C. hypotonic to fresh water but hypertonic to the salt solution. D. hypertonic to fresh water but hypotonic to the salt solution. E. isotonic with fresh water but hypotonic to the salt solution. 3. In order for a protein to be an integral membrane protein it would have to be which of the following? A. hydrophilic B. exposed on only one surface of the membrane C. amphipathic D. hydrophobic E. completely covered with phospholipids 4. The permeability of a biological membrane to a specific solute may depend on which of the following? A. the size and polarity of the solute
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Quiz 2-Form1 2009 - BIL 150 QUIZ 2-FORM 1 FALL 2009 1....

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