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Exam+1+--+Spring+2004+--+ANSWERS+_do+not+distribute_

Exam+1+--+Spring+2004+--+ANSWERS+_do+not+distribute_ -...

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B\Oz2s,Spring2004,Exam I Student Name JL,h*tt,, [1- ;,00, tf r Dr. S. Pavgi Total Points 100 Student ID / i, I 3 $ ir rl BlO225, Principles of Animal Physiology Spring Term 2004 E x a m t n , u Answer all questions. q Ql. which of the following actls through nuclear receptors? 2 points a. Thyroxine(Ta) -,ih , *.- b. progesteron:rF 5$I$-" Nrlu,.r.o.\rn"" _, c. corticosteroid t d. all of the above e. aandc X none ofthe above Q2. Which kind of metabolic inhibitor would most directlyinterfere with glycolysis? 2 points . \ An agent thatreacts with oxygen and depletes its concentration in the cell. V b. An agent thatbinds to pynrvate and inactivates it. c. An agent thatmimics the structure of glucose but is not metabolized. { An agent that inhibits the formation of acetyl coenzyme A. Q3. The main source of energy for spermatozoa during its journey in the male reproductive tract is _ in the surrounding medium. 2 points a. glucose b. glycogen c. fructose , d. lipoproteins e. all of the above Q4. An increase in which of the following parameter is mostimportant in the evolution of spe iaftgd*erl-ch*A!_suif+eq. "-qs.frs*h_e Ufl!sq:"s*l'i_t$.g:]#l i?""? poinrs / a. Surface area v b. Thickness c. Number of cell layers d. Cell volume
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BIO225, Spring 2004, Exam I Dr. S. Pavgi Total Points 100 \ Facilitated diftusion $. diffusion . c. active transport J '& osmosis e. anyofthe above Q6. Na*A(* ATP-ase pump Student Name * lr r, tr,,,,, ir"i ',a.ptlsy StudentID I r-'ll { :'4 I Q5. The concentration of calcium in a cell is 0.3%. The concentration of calcium in the surrounding fluid is 0.1%. How could the cell obtain more calcium? points \ , * !,' 11\'\r r \ I \Creates an ion-motive force for synthesis of ATP. *ab) Creates an electrical gradient with the interior of the cell more negative than the exterior. -+c) Creates a chemical gradient with a higher extracellular concentration of Na*. $ Makes the interior of the cell more concentrated than the exterior. j ' i l i l , l j r"\ t ' i 1.lr \ ' 'ir -,h$' i t \ ., '- _,, ;l - .!" 2 points a. b, t c . v d . e. ,-D e)Both b and c. Q7. What kind of connective tissue is ligament? 2 points cartilage adipose loose connective fibrous connective specialized for holding bone to muscle. Q8. Which of the following is an incorrect association of ananimal germlayerwith the tissues/organs to which it gives rise? a. Ectoderm - outer covering b. Endoderm - intemal lining of digestive tract \/ c. Mesoderm - gonads d. Mesoderm - nervous system Q9. Theprimary reason steroid hormones usually act slowlyis that 2 points 2 points \ they are produced at very low concentrations. \ acting via a signal-transduction pathway makes for slower responses than does directly interacting with a cell's DNA. \ they are too large to enter a cell and therefore must first bind to a plasma membrane _ \ receptor before having an effect on a cell. >\ d. theytum genes on o, off and it takes time for gene products to build up or become depleted.
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BIO225, Spring 2004, Exam I Dr. S. Pavgi Total Points 100 SrudentName .h+iluri l{w,qgftf Student ID 'l {r i.
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