BIOL 2401 CH4 REVISION EXAM QUESTIONS CORRECTLY ANSWERED.

BIOL 2401 CH4 REVISION EXAM QUESTIONS CORRECTLY ANSWERED. In a neuron, if the sodium-potassium pump was absent, the concentration gradients for sodium and potassium would dissipate T/F - CORRECT ANSWER True Place a single word into each sentence to make it correct and then place each sentence into a logical paragraph order. Not all terms will be used. - CORRECT ANSWER -Osmosis is the net flow of water from one side of a selectively permeable membrane to the other. -The normal movement of water across this membrane is from high to low water concentration. -A high concentration of water has fewer dissolved particles than a low water concentration. -During osmosis, water will move down the concentration gradient until equilibrium has been reached. The uptake of material through the plasma membrane by the formation of a vesicle is _______, whereas the fusion of a vesicle with the plasma membrane and the release of its contents outside of the cell is called __________. - CORRECT ANSWER endocytosis; exocytosis Complete each statement by dragging a label into the appropriate blank. - CORRECT ANSWER -Small, non-polar molecules, like oxygen, pass directly through the phospholipid bilayer. -Charged particles, like sodium ions, can diffuse through the membrane if specific channel proteins are open. -Some large, polar molecules, like glucose, can cross the membrane via facilitated diffusion. -Small, polar molecules, like water, can slip through small gaps in the phospholipid bilayer.