Match the following concerning concentration differences across the plasma membrane.A. Concentration of K+B. Concentration of Na+ and Cl?C. Negatively charged proteinsD. Sodium-potassium pumpE. Plasma membrane is more permeable to this ion because of leak ion channelsRequires ATP
Fill in the blank(s) with the appropriate word(s).
Answer: D
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The release of neurotransmitter from a neuron is an example of
A. endocytosis and is a form of passive transport. B. receptor-mediated endocytosis and it requires expenditure of ATP. C. exocytosis and is a form of passive transport. D. exocytosis and it requires expenditure of ATP. E. pinocytosis and it is a form of primary active transport.
Which of the following would NOT be an effective method of producing a vaccine?
A. Use recombinant viral proteins B. Use killed, virulent viruses C. Use live, attenuated viruses D. Use cloned antibodies
Where is the enteric nervous system located?
A. brain B. heart C. digestive tract D. skin
The enteroendocrine cells of the intestinal crypts are responsible for producing which intestinal hormones?
a. gastrin and pepsinogen b. bilverdin and bilirubin c. cholecystokinin and secretin d. enterokinase and aminopeptidase