Which of the following is a J-shaped muscular sac that serves in the temporary storage of masticated food while digestive enzymes and HCl are released to digest proteins?

A) colon B) esophagus C) stomach D) large intestines


Answer: C

Biology & Microbiology

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Carbohydrates are polymers formed of structural units called:  

A.  amino acids. B.  fatty acids. C.  nucleotides. D.  glycerols. E.  monosaccharides.

Biology & Microbiology

How many Barr bodies does a normal human female contain in each diploid cell?  

A.  0 B.  1 C.  2 D.  3

Biology & Microbiology

Endotherms have higher metabolic rates than do ectotherms and are therefore able to be active over a narrower range of environmental temperatures

A. true B. false

Biology & Microbiology

In working with a potentially new antibiotic, you are attempting to determine where in prokaryotic translation this antibiotic has its effect. You have determined thus far that it interacts with a translational factor but need to identify which one. If this antibiotic interfered with elongation, which of the following factors could be a potential site of action?

A) IF3 interaction with an aminoacyl tRNA B) EF-Tu placement of N-formylmethionine onto the ribosome C) EF-Tu interaction with an aminoacyl tRNA D) EF-Ts translocation of tRNAs from the A site to the P site E) all of the above

Biology & Microbiology