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Symporters and antiporters (a.k.a. exchangers) are two different types of coupled membrane transporters. In mammalian cells, the movement of small molecules across the plasma membrane through these transporters is coupled to the concentration gradient of what ion? Clearly describe the direction of the co-transported solute carried out by a plasma membrane localized symporter and an antiporter.  

Choisis la bonne expression pour compléter la phrase. En Afrique, il y a plusieurs __________________ différents d’une même langue.

Trouve le mot français correspondant à chaque expression anglaise.

Choisis la bonne expression pour compléter la phrase. Amir vient _________________; il est marocain.

Choisis la bonne expression pour compléter la phrase. Lorsque vous écrivez à votre patron, vous devez utiliser la langue ________________.

Choisis la bonne expression pour compléter la phrase. La _________________ est un bon moyen d’exprimer ses idées.

Écris une phrase en utilisant le mot suivant.  Ta phrase doit démontrer ta compréhension et être grammaticalement correcte. québecois

A point in a structural member is subjected to the following stress magnitudes. The stress directions are shown in the image. Determine the larger principal stress in the x-y plane.|σx| = 60 MPa|σy| = 75 MPa|τxy| = 40 MPa

A point in a structural member [E = 199 GPa, G = 74 GPa] is subjected to the following stress magnitudes. The stress directions are shown in the image. Determine εz.|σx| = 35 MPa|σy| = 50 MPa|τxy| = 35 MPa

A driver accidentally bumped a fire hydrant creating a bending moment of 790 N·m in the pipe below. The pipe has an inside diameter of 195 mm and a wall thickness of 12 mm and is pressurized to 315 kPa. Determine the largest normal stress along the length of the pipe.