The open area or central space in the GI tract is called the ________

Fill in the blank(s) with the appropriate word(s)


Answer: lumen

Biology & Microbiology

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NADH concentrations serve to regulate oxidative decarboxylation and the TCA cycle. Which of the following enzymes is not regulated by NADH?

A) pyruvate dehydrogenase B) isocitrate dehydrogenase C) ?-ketoglutarate dehydrogenase D) malate dehydrogenase E) succinate dehydrogenase

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Which of the following was found to be the

main ozone destroying gas?

a. chlorofluorocarbons b. carbon dioxide c. methylmercury d. methane e. nitrogen

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Saliva contains which digestive enzyme?

A) maltase B) lipase C) protease D) amylase

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A person who has been exposed to rabies receives both HRIG (human rabies immunoglobulin) injected near the bite site and the rabies vaccine. What does this strategy represent?

A) active immunization B) passive immunotherapy C) viral hemagglutination inhibition D) passive immunotherapy combined with viral hemagglutination inhibition E) active immunization combined with passive immunotherapy

Biology & Microbiology