In an experiment, a researcher raises mice under completely germfree conditions such that colonization of their intestine with commensal bacteria cannot occur
Compared to a conventionally-raised animal, the concentration of which of the following would be expected to be increased in the colonic contents of such mice?
A. butyrate
B. taurochenodeoxycholic acid
C. unconjugated bilirubin
D. IgA
E. lithocholic acid
ANS: B
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Which tunic of an artery contains endothelium?
A) tunica intima B) tunica media C) tunica externa D) basement membrane
Which of the following would be an indication that an individual is suffering from leukemia?
A. Examination of the blood reveals a large number of immature erythrocytes. B. Examination of the blood reveals a large number of immature leukocytes. C. The hematocrit is greater than 50. D. The person has polycythemia. E. The blood cells are an odd sickle shape.
During protein synthesis (translation):
1.mRNA is translated in the Smooth Endoplasmic Reticulum. 2.ATP is hydrolyzed to provide energy for forming peptide bonds. 3.mRNA is converted into tRNA, which is then transformed into protein. 4.mRNA, tRNA and amino acids are brought together at the ribosomes. 5.None of these is correct.
The acromion is an anatomical feature of the ________.
A. clavicle B. scaphoid C. thumb D. scapula E. ulna