Multiple ChoiceDuring respiration, oxygen gas diffuses into cells spontaneously. Which type of transport is this?21views
Multiple ChoiceHow would you expect an H+ ion to move out of the cell if [H+] inside the cell is lower than extracellular fluid?30views
Multiple ChoiceIn oxidative phosphorylation, H+ ions from the intermembrane space of mitochondria to the mitochondrial matrix, which type of membrane transport is this?30views
Textbook QuestionAs noted earlier (Section 22.3), he first step in glycolysis, which occurs within cells, is phosphorylation of glucose to glucose 6-phosphate. Why does this step prevent passive diffusion of glucose back out of the cell?161views
Textbook QuestionIdentify the type of transport described by each of the following:a. A molecule moves through a protein channel.124views
Textbook QuestionIdentify the type of transport described by each of the following:b. O₂ moves into the cell from a higher concentration outside the cell.83views
Textbook QuestionIdentify the type of transport described by each of the following:a. An ion moves from low to high concentration in the cell.45views
Textbook Question Match the lipoprotein (1 to 4) with its description (a to d). (15.6)1. chylomicrons2. VLDL3. LDL4. HDLb. transports most of the cholesterol to the cells129views
Textbook QuestionIdentify the type of transport (passive diffusion, facilitated transport, or active transport) that will occur for the following molecules:(b) glucose, no energy required137views
Textbook QuestionIdentify the type of transport (passive diffusion, facilitated transport, or active transport) that will occur for the following molecules:(b) nitrogen164views
Textbook QuestionDo the following processes require energy when transporting molecules across the cell membrane?(c) active transport70views
Textbook QuestionDescribe the concentration of the solution outside the cell as hypertonic or hypotonic if that solute is being transported across the cell membrane by(b) facilitated transport.131views
Textbook QuestionWhich process requires energy—passive or active transport? Why is energy sometimes required to move solute across the cell membrane?227views
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