You are studying the toxic effects of a newly discovered tropical plant extract. From preliminary studies, it appears that the toxin prevents H+-dependent membrane transport. Explain which digestive processes may thus be impaired.
What will be an ideal response?
Absorption of some amino acids, dipeptides, and tripeptides may be impaired, as well as iron and sodium absorption, because these are dependent upon an H+ exchanger or cotransporter. HCl secretion into the stomach, which acidifies the lumen for protein digestion, may also be impaired.
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Transport vesicles carry secretory proteins from the smooth ER to
1.the Golgi complex 2.lysosomes 3.secretory vesicles 4.the nucleus 5.the plasma membrane
Sarah eats only dairy, and no meat or eggs. She is a(n)
A) ovo-vegetarian. B) pesco-vegetarian. C) vegan. D) lacto-vegetarian.
Plasma proteins, particularly albumins, are responsible for establishing:
A) interstitial fluid osmotic pressure (IFOP) B) blood colloid osmotic pressure (BCOP) C) blood hydrostatic pressure (BHP) D) interstitial fluid hydrostatic pressure (IFHP)
Where is the arachnoid mater?
a) E b) F c) G d) H e) I