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Practice for Chapters 5 and 7.odt.docx
Practice_for_Chapters_5_and_7.odt.docx
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Practice_for_Chapters_5_and_7.odt.docx-Practice For Chapters 5 and 7
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Practice_for_Chapters_5_and_7.odt.docx-Practice For Chapters 5 and 7
Page 1
Practice For Chapters 5 and 7
BSC2010
Page 2
1.
The amino acid valine is transported into cells by a membrane protein that does
not recognize any other substance. This is an example of:
a.
symport
b.
uniport
c.
antiport
d.
aquaporin
2.
Cell X is swelling in a solution. Cell Y is in the same solution and it is
crenated. What is the relationship of cell X to cell Y?
a. hypertonic
b. hypotonic
c. isotonic
3.
What does the term amphipathic mean?
- means it is non-polar and polar, hydrophobic and hydrophilic, and charged
and non charged.
4. Cells A through E are in the same solution. Cell A shrinks, cell E crenates, cell B
swells, cell C lyses, and nothing happens to cell D. What are the relationships of each
cell to the solution?
- Cell A shrinks = hypotonic
- Cell E crenates = hypotonic
- Cell B swells = hypertonic
- Cell C lyses = hypertonic
- nothing happens to cell D = isotonic
5. A balloon filled with 45% sucrose and 55% H
2
O is placed in a beaker containing
70% sucrose and 30% H
2
O. What happens to the balloon?
-
Balloon shrinks (hypotonic)
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