Composition Sciences Naturelles · 2ème Trimestre 3ème Année Secondaire Sujet N°: 31

z 0S/‘]5- *+ ”/g *+ */ŒeBX+ *//2]5]?./d */o<O *+ ,]aB45- O ./~3[ Na+ Œ? R YK45- A4cL/C 6N iQg‹ r3+ 6~ fd /d ’3‡W 9@-]Ke5 ¤]ŒW 3/1 fMALo…- AK1 \ IA?.:5- \R <]5- *+ “A1|˜- tASBW- ZQM Oh tASBW- YCABW O h 6aK5- fd 0s]45- ƒ5‹ <]5- 6aK5- fd 0L/7+ Ac/eM 6N45- ¦^ABL5- O Ÿ \ 0S/‘]5- *+ O Ac/eM 6N45- ¦^ABL5- 6eg “A1|˜- tASBW- ƒeM 05O=;45- 0/5- ¦BLB<- \ 0?.:5- b< Ac[-./4+ 3~¤- b‘ t]g Acg3BS[ fB5- IA/s3Œ5- fV A+ 64M ŽO3| \ */B?.:5- \ O † II 0/LSBC t.1W 0SCA;5- IA/s3Œ5- 0… *+ Q~}Be5 Patch-Clamp AK1 *+ */B?3c:+ */B1o8 \ */B?.:5- iQg‹ A4cL+ 6~ 64[R ,]7NM \ O O */o<]5- ./~3[ ›ŒLC AŒBg˜- Y+R O O 6aK5- fd šs]45- Ÿ z 0S/‘]5- *+ 0ŒeBX+ i3`h 0/7?3:[ ŽO3| QLM A` Ac2 0o<-]C ›/SW b‘R 0s]+ Ac/eM 6N45- ¦^ABL5-O ŽO3K5-R 05Ag 6~ fd tO.145- AK‡5- 37M rQ5]B45- I-@A/B5- 0S/‘]5- fea| fd 5- QN8 45- f7?3:B5- f7?3:B5- ./~3[ Na Na+ K45- \ IA?.:5- \ IA? \R \ \R  M 6N45- ¦^ABL5- O N45- ¦^ABL5- O “A1|˜- tASBW- ƒ “A1|˜- tAS \ † AK1 *+ */B?3c:+ *+ */B? O */o<]5 O O O O A` Ac2 0o< A` Ac2 3;d \ */B?.:5- 64M ŽO3| ¦BLB<- O Ac/eM 6N45- ¦^ABL5- \ O \ *+ 6~ 0/4;[ Y+ n5¤ 6eM†0SCA;5- n[A/s3d ¦^ABL5- §¡V n5 Q~=[ 6V \ O 0S/‘]5- IA/LL+ ƒeM 9A4BMpAC G0/[- IpA5- fd 018]B45- ¦^ABL5- fV A+ hH v5- 0VA+‹ YL4[ r9A+ 0dAs‹ QLM ATP z ve5 */o<]5- */C 0?OA;B+ ./~-3[ tA41B<- 05Ag fd Na+ \ v5- 9@-]| t-Q7B<AC Na+ vC K+ III \ IA?.:5- @O9O fa7K45- 6SL5- 0/5a fo/oX[ b<3C šsO n5¤ fd 1}L'-@ ’O3/d ƒeM A_S5- ,h 3/–a5- QSB1? RSV b;:5- ,h p‹R 0?]/5- I-9A_45- tOALBC bB? ZA~.e5 7;45- Ac?Q7? fB5- IA/5- bcŒ5 OR 0CA…˜- *+ ZA?h Q1C fMAL45- Ac:5- 6`QBC ’O3/Œ5- -¡V ƒeM e‡B5- Y/oB;? G0/[- IA<-@Q5- I.:Wh ’O3/Œ5- -¡V 0+OAS45 b;:5- IV 15:P&++ *+ 0M]4:+ “A_`‹ Q1C 5A145 ,-3Œ5- ’O3/ŒC *S[ 0ŒeBX+ IA: RSV Ac/eM 6N45- ¦^ABL5- O z@A:B5- 3/<R 0S/‘]5- tOQ2 fd €WO9 QLM Ac/eM 6N45- ¦^ABLe5 -3/;Œ[ ZQ8 ,-3Œ5- R ‚Ka5- b[ fB5- 0/MAL45- 0CA:B<p- “]W A+ :B5- *+ 0e;e;5- §¡V fd AcLM A 6eMRz@ @}Œ5- 0:/BW 6e1[ -¤A4C x † 3;d M 6N45- ¦^ABL5- M 6N45- ¦^ABL s3d ¦^ABL5- §¡V n5 Q~= d ¦^ABL5- §¡V n5 0S/‘]5- IA/LL+ ƒeM S/‘]5- IA/LL+ v5- 0VA+‹ YL4 v5- 0VA+‹ ATP \ H\ | t-Q7B<AC 7B<AC :5- @O9O fa7K45- 6SL5- O9O fa7K45- 6 R LBC bB? ZA~.e5 7;45- C bB? ZA~.e5 7;4 ˜- *+ ZA?h Q1C fMAL45-  + ZA?h Q1C fMAL ams 1&38L&++ ’O3/ŒC @}d *Sg *+ ZA?h Q1C RSV B?]_1C Q2O 0?OAŒ45 A?U` LTc IU7SB;+ Ac5 TCR ’O3/d I-9Q+ Y+ 0e+AaB+ RSV 0/MAL45- 0CA:B<p- “]W yX? A4/d 0C3:B5- §¡V 0:/BW n5 Ac+QS[ fB5- 0/dAs˜- 0+]e145- fV A+ †0e`QB45- .:LW ,-3Œ5- *+ */B/SW */B5U< ƒeM X O L 0S/‘]5- *+ h 6aK5AC Ac:^ABW O 0L/745- z@A:B5- U–5- ŽA<OP- fd Ac/eM 6N45- ¦^ABL5- 3;d †¦BLB;[ -¤A+R II IA?OAŒ4e5 0/?.:5- I-./445- 1C -3C˜ T O B 0S/‘]5- ZQSW A/MAL+ 0:sAL5-0eV=45- 0?OAŒ45 0/eX5 A/o/oX[ A4<@ h 6aK5- 6–4? T *+ ZQS45- uQ/B775- Q_B;45- ƒeM Acd31[ AL‘h 6aK5- A4L/CR 0dQcB;+ Oh 0s@AM 0/e` ž3Ž Ÿ z 3Ž=45- .:5- 6/…AŒ[ 6–4? 048345- IAWA/75- ƒeM ž31[ 6aK5- AV3cŠ? fB5- 0/5- */C Ÿ z