Serves as an intracellular second-messenger molecule
a. Adenylate cyclase
b. G-protein
c. Carrier protein
d. cAMP
e. Ion channel receptor protein
Ans: d. cAMP
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Which of the following areas of the human body is(are) not normally free of microorganisms?
A. Intestinal tract B. Eyes C. Respiratory tract D. All of the choices are correct.
All EXCEPT which of the following are associated
with sclerenchyma? a. lignin b. photosynthesis c. transport d. sclereids e. fibers
A powerful way to demonstrate that observed differences between a treatment group and a control group truly reflects the effect of the treatment is for researchers to:
A) get their study published in a scientific journal. B) use a variety of statistical tests until they find one that shows statistical significance. C) conduct the experiment over and over again. D) make more observations. E) formulate as many hypotheses as possible.
Which disease and parasitic organism(s) are INCORRECTLY matched below?
a. amebiasis – Entamoeba histolytica b. Chagas disease – Trypanosoma cruzi c. malaria – Plasmodium spp. d. toxoplasmosis – Schistosoma mansoni