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- Compared with the inside of the resting plasma membrane, the outside surface of the membrane isa. positively charged.b. electrically neutral.c. negatively charged.d. continuously reversing, so that it is positive one second and negative the next.e. negatively charged whenever the sodium-potassium pump isoperatingPlasmalemma is the same as the plasma membrane A. True B. FalseLeft Compartment Right Compartment 7 grams of Z per liter solution 4 grams of XY per liter of solution total volume = 1 liter total volume = 1 liter Solute Z has a molecular weight of 20 (non-dissociable) Solute XY has a molecular weight of 10 (dissociates into X+ and Y-) If X+ and Y- are ions, which are permeable through the membrane, and Z is not, what will happen and why?
- Two cells can be operated in such a way that leads to a common continuous plasma membrane of both.a) Trueb) FalseCell junctions can connect both molecules from the inside and outside of cells, True FalseWhen the membrane is at rest, the concentration gradient tends to draw sodium ions ___ the cell, and the electrical gradient draws them ___ the cell. a. into . . . out of b. into . . . into c. out of . . . into d. out of . . . out of
- The feature of cells in epithelial sheets that prevents mixing of the apical and basolateral extracellular fluids is called the (______. Need answer in short and ASAP .At resting state the interior of the cell is more ______________ than the outside When depolarization occurs the interior of the cell becomes more ______________.Because the plasma membrane is selectively permeable, nothing can diffuse through the bilayer. True or False
- 1. Diffusion is the movement of any particle against its concentration gradient? True or False. 2. All cell membrane demonstrate a resting membrane potential? True / False. 3. All cell membranes have vgc of Na+ and K+? True / False. 4. Most physiolgical types of diffusions are considered to be facilitated? True / False.Cytokinesis is the division of a cell following mitosis, and is driven by the formation of contractile ring of actin and myosin II just beneath the plasma membrane, midway between daughter cell nuclei. true falseWhich of the following processes is involved in the bulktransport of molecules out of the cell?a. phagocytosisb. pinocytosisc. receptor-mediated endocytosisd. exocytosise. None of these are correct.