Exam 1 key

Exam 1 key - EXAM 1 KEY (February 17, 2011) Arrange the...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
EXAM 1 KEY (February 17, 2011) 1. Arrange the following in proper order… ANS. signal, sensor, processing center, output, feedback connection 2. … osmotic press. across membrane of 0.2 Osm cell dropped in distilled water at 300 K? ANS. 6 atm 3. Which of the following correctly depict(s) Fick's description of diffusion? ANS. J = D (C1-C2)/x and dQ/dt = D dc/dx 4. … a red blood cell from a laboratory rat was dropped into 0.15 M NaCl…it neither swelled nor shrank. Which of the following is (are) the best explanation(s)? ANS. the osmolarity of the cell is 300 mOsm. 5. …approximate osmotic pressure of an elasmobranch cell at 27 degrees C (300K)? ANS. several answers accepted – depends on context 6. D = .001 cm 2 /s, radius = 500 micrometers, high concentration = 15,000 molecules/cm3, low concentration = 5,000 molecules/cm3. What is the flux of Na+ ion diffusion across cell? ANS. 100 7. Two NaCl solutions…completely permeable membrane… At end of the experiment: ANS. the solutions will each contain the same amount of NaCl
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/16/2011 for the course BIO 305 taught by Professor Lohr during the Spring '11 term at UMBC.

Page1 / 2

Exam 1 key - EXAM 1 KEY (February 17, 2011) Arrange the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online