HCl in the stomach acts to
a. neutralize buffers.
b. kill harmful bacteria.
c. switch off certain digestive enzymes.
d. produce trypsin.
e. prevent breakdown of protein.
B
You might also like to view...
Cells require which of the following to form cilia or flagella?
A) tubulin B) laminin C) actin D) intermediate filaments E) secretory vesicles
Each of the following citric acid cycle enzymes catalyzes electron transfer to NADH/FADH2 except
A) isocitrate dehydrogenase. B) ?-ketoglutarate dehydrogenase. C) succinyl CoA synthetase. D) succinate dehydrogenase. E) malate dehydrogenase.
Which of the following molecules does not act as a second messenger?
a. protein kinase b. IP3 c. DAG d. calcium ions e. cyclic AMP
Curtis and McIntosh created a scale of an environmental gradient based on changes in physical characteristics or community composition along that gradient. What term did they apply to this index?
A) the climax index B) the continuum index C) the successional index D) the tolerance index