Protons usually move across membranes (by active transport) in all of the following directions except: from the mitochondrial matrix, across the mitochondrial cristae, into the intermembrane space B. from the Halobacterium halobium cytosol, across the plasma membrane, into the extracellular fluid C. from the cytosol of plant cells, across the vacuolar membrane, into the central vacuole D. from the cytosol of skeletal muscle cells, across the plasma membrane, into the extracellular fluid from the lysosome of animal cells, across the lysosomal membrane, into the cytosol

Question

9. Protons usually move across membranes (by active transport) in all of the following directions except:

  1. from the mitochondrial matrix, across the mitochondrial cristae, into the intermembrane space
  2. B. from the Halobacterium halobium cytosol, across the plasma membrane, into the extracellular fluid
  3. C. from the cytosol of plant cells, across the vacuolar membrane, into the central vacuole
  4. D. from the cytosol of skeletal muscle cells, across the plasma membrane, into the extracellular fluid
  5. from the lysosome of animal cells, across the lysosomal membrane, into the cytosol

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Animal Physiology and Biochemistry

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