Exam+1+--+Fall+2005+--+ANSWERS+_do+not+distribute_ - f...

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fto{'os 'fY\Mfj'e u Biology 225: Animal Phys Name: Anne A Student Exam 1 Exam lnstructions: Student lD: 12345678 Please make sure that your name and student lD number go on every page of the exam, including the Scantron form! Your exam may be separated for grading, and if your name isn't on a page, you will not receive credit for that page! This exam has 2 parts. The first is multiple choice, which are to be answered on the Scantron forms. There is a single answer to be bubbled in for each question in this part. Again, make sure that your Scantron forms have your name and lD on them! The second part is short essay. The questions generally require only two to four sentences to answer. Part 1: (2 pts each) 1, Which of the following occur in the mitochondria in animals? a) Glycolysis b) Citric acid cycle c) Electron transport d) bandc e) a, b, and c 2. How does the kidney ensure that glucose is not lost in urine? a) Facilitated diffusion with a glucose carrier b) Active transport using a glucose pump c) Glucose is selectively retained and not filtered into urine d) By using a symporter to carry glucose with Na* 3. Sharks in seawater absorb water through their gills and skin while bony fish in seawater lose water through their gills and skin. What accounts for this difference? a) Water transporters in the gills and skin of sharks that are missing in fish b) Chloride pumping in fish gills and skin that does not happen in sharks c) The buildup of urea and TMAO in sharks but not fish
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Biology 225: Animal Phys Exam 1 Name: Anne A Student Student lD: 12345678 5. A cell that only expresses potassium channels and aquaporins (assume everything else is impermeable) has the following ICF and ECF: lon ICF ECF Na 1OmM 150mM K 150mM1OmM cl 1OmM 150mM PO+ 150mM1OmM Other <1mM <1mM You inject a potassium chelator (a drug that absorbs potassium) into the celi, which will remove all of the potassium inside the cell (to a level of <1 mM). What would happen to the potassium and water balance? a) Potassium would leave the cell and water would leave the cell b) Potassium would enter the cell and water would leave the cell c) Potassium would leave the cell and water would enter the cell d) Potassium would enter the cell and water would enter the cell 6. Nucleic acids can be used for all of the following EXCEPT: a) Information storage b) Intracellular signaling c) Energy d) Catalytic activity e) A component of membrane 7. Which of the following maintain the osmolarity of intracellular fluid to be isoosmotic to the environment using both
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This note was uploaded on 07/11/2011 for the course BIOLOGY 225 taught by Professor Pavgi during the Spring '10 term at University of Michigan.

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Exam+1+--+Fall+2005+--+ANSWERS+_do+not+distribute_ - f...

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