BIPN100-fortes-final-nokey

BIPN100-fortes-final-nokey - BIPN 100 Mammalian Physiology...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
BIPN 100, Mammalian Physiology I. Final Examination Page 1 Winter, 2005. March 15, 2005 P. A. George Fortes Please select the single best answer. 1. What is osmosis? a. diffusion of water to area of lower solute concentration b. diffusion of solutes to area of lower water concentration c. diffusion of solutes to area of lower solute concentration d. diffusion of water to area of higher solute concentration e. diffusion of water to area of higher hydrostatic pressure 2. Osmosis in biological membranes requires: Use these choices to answer questions 3 and 4.. 3. Which GLUT transporter is found in the brain? 4. Which GLUT transporter is found in the proximal tubules of the kidney? 5. Which of the following pairs of substrates is co-transported into intestinal and kidney cells? 6. Which of the following are true about Na+/K+ pumps? I. They do not contribute to repolarization of the membrane during an action potential. II. They move 3Na+ into the cell and 2K+ out of the cell III. The pump must be phosphorylated to release K+ inside cells IV. They generate electrochemical gradients for secondary active transport V. In the brain, 70% of the energy is used to make ATP for these pumps a. I, II, III, V only b. III, IV, V only c. I, IV, V only d. I and IV only e. I only
Image of page 1

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

View Full Document Right Arrow Icon
BIPN 100, Mammalian Physiology I. Final Examination Page 2 Winter, 2005. March 15, 2005 P. A. George Fortes 7. If you inject current with a microelectrode into a presynaptic terminal, what would be the membrane potential that would prevent Ca++ influx if the extracellular concentration is 2 mM and the intracellular concentration is 0.2 μ M? (assume Ca-channels are open). 8. The following are true about the resting membrane potential, Vrest, except: 9. Which of the following are true about graded potentials? I. The response is proportional to the stimulus. II. Graded potentials originate in the axon hillock. III. Graded potentials can be either hyperpolarizing or depolarizing. IV. Both hyperpolarizing and depolarizing stimuli give the same magnitude of graded potential. V. Graded potentials decay with distance.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern