BIO502 MIDTERM PAST PAPERS

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BIO502 MIDTERM PAST PAPERS

BIO502 MIDTERM PAST PAPERS

 

See also:

CS201 FINAL TERM SOLVED PAPERS BY WAQAR SIDHU.  ENG101 FINAL TERM SOLVED MCQS. CS403 CURRENT FINAL TERM PAPERS. CS101 FINAL TERM SOLVED PAPERS BY MOAAZ MEGA FILE. CS201 FINAL TERM SOLVED PAPERS BY MOAAZ MEGA FILE. CS205 FINAL TERM PAST PAPERS. CS204 FINAL TERM PAST PAPERS. CS301 FINAL TERM SOLVED PAPERS BY MOAAZ. CS304 FINAL TERM SOLVED PAPERS BY MOAAZ. CS311 FINAL TERM SOLVED PAPERS BY MOAAZ. CS401 FINAL TERM SOLVED PAPERS BY MOAAZ

 

But sodium ion (Na+) radius is 0.095 nm
large, 0.130 nm; There is only one positive charge for both. Come on
Potassium allows the channel to pass only through the K+ membrane, not the smaller Na+. It was only recently revealed how this happened when Roderick McKinnon decided
Potassium channel structure from a bacterium. The description is elegant and provides a good analysis of the cell chemistry.

When charged, both Na+ and K+ attract water.
Molecules are “bombs” of water that are in solution and are electronically driven by the gravity of positively charged ions.

negatively charged oxygen atom in polar water
Molecules . penetrate a membrane
channel, an ion must release its water. “naked” ion
Now the channel is attracted by the oxygen atoms in the holes
protein.

Oxygen atoms are found in the potassium channel
Petiole is a funnel shaped protein. K+ ion level is correct
stem was highly attracted to the oxygen atoms there
Water holds little Na+ ions, on the other hand, little
The channel is far away from the oxygen atoms in the stem, thus prefers to be surrounded by water. i + the same.

 

 

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