UAFS physiology Cornell Final Exam Review ACTUAL QUESTIONS AND CORRECT ANSWERS

UAFS physiology Cornell Final Exam Review
ACTUAL QUESTIONS AND CORRECT
ANSWERS
ICF - Correct answers✔✔fluid inside the cell



ECF - Correct answers✔✔fluid outside the cell



Ions higher in the ICF - Correct answers✔✔K+ and proteins



Ions higher in the ECF - Correct answers✔✔- Plasma: Na+, Cl- and proteins

- Intersitial fluid: Na+ and Cl-



Phagocytosis - Correct answers✔✔- active mechanism

- From ECF to ICF

- Large Molecule

- creates phagosome and uses pseudopods to "eat" molecules



Endocytosis - Correct answers✔✔- smaller molecule

- plasma membrane invaginates

- some are selective for specific ligand, (receptor mediated endocytosis)



Exocytosis - Correct answers✔✔- opposite of endocytosis

- Triggered by Ca+

, - sent out in vesicles



Diffusion - Correct answers✔✔- passive; high to low concentration

- faster w/ shorter distances; decrease distance = increase D.R.

- Increase in gradient = increase in D.R.

- Increase temp = increase in D.R.

- Inversely related to molecular size.

- increase in lipids= increase in D.R.



facilitated diffusion - Correct answers✔✔- uses channels or carrier to get across membrane

- Goes down concentration gradients

- no energy input ( ex. GLUT transport)



Active transport - Correct answers✔✔- uses carrier proteins

- moves molecules against concentration gradients

- Requires energy, either directly or indirectly



primary (direct) active transport - Correct answers✔✔uses ATP directly for energy



Secondary (indirect) active transport - Correct answers✔✔uses potential energy stored in
concentration of one molecule to push another molecule against its gradient



What is resting membrane potential - Correct answers✔✔-70mV