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Exam+1+--+Fall+2005+--+Blank - u Biology 225 Animal Phys...

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"#$%& ’($&) *+,&#’,- ./0#1- 2-1034 5($&) 2/0$& 63%7-$ 5($& 8 9: ’&% -(1/;) 1, Which of the following occur in the mitochondria in animals? a) Glycolysis b) Citric acid cycle c) Electron transport d) b and c e) a, b, and c 2. How does the kidney ensure that glucose is not lost in urine? a) Facilitated diffusion with a glucose carrier b) Active transport using a glucose pump c) Glucose is selectively retained and not filtered into urine d) By using a symporter to carry glucose with Na* 3. Sharks in seawater absorb water through their gills and skin while bony fish in seawater lose water through their gills and skin. What accounts for this difference? 4. For a terrestrial vertebrate, thirst would be stimulated by: u Biology 225: Animal Phys Name: Anne A Student Exam 1 Fall 2005 Meyers
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5. A cell that only expresses potassium channels and aquaporins (assume everything else is impermeable) has the following ICF and ECF: <0+ #3=-1& ( ’0&(%%#+> 1/-,(&0$ 9( 4$+? &/(& (@%[email protected]% ’0&(%%#+>; #3&0 &/- 1-,,A 7/#1/ 7#,, $->0B- (,, 0C &/- ’0&(%%#+> #3%#4- &/- 1-,, 9&0 ( ,-B-, 0C D8>*; E/(& 70+,4 /(’’-3 &0 &/- ’0&(%%#+> (34 7(&-$ @(,(31-F 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 inorgranic and organic osmolytes: a) Squid b) Sharks c) Tuna d) Both a&b e) None of the above 8. lf a cell( with1 50mMK * inside)is placed in ECFwith1 0 mM K*,one could measure the rate of f K* leaking into the cell through a K+channel.To cut the rate of K* entry through the channel in half, to what concentration of K+ would the ECF need to be changed? lon ICF ECF Na 1OmM 150mM K 150mM 1OmM cl 1OmM 150mM PO+ 150mM 1OmM Other <1mM <1mM
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9. Humans are all of the following EXCEPT: a) A tetrapod b) A coelomate c) A deuterostome d) A bilaterian e) A diploblast
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