Nucleotides have a phosphate group attached at the ___ carbon atom of the sugar.  

A.  2'
B.  3'
C.  5'
D.  1'


C.  5'

Biology & Microbiology

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The ____ is a flaplike structure that helps prevent food from entering the windpipe

a. uvula b. pharynx c. larynx d. epiglottis e. esophagus

Biology & Microbiology

The linear order of amino acids in a polypeptide is the ________ structure of a protein.

A) primary B) secondary C) tertiary D) quaternary

Biology & Microbiology

A useful diagnostic measure for imperfect multicollinearity is the:

A. likelihood ratio test. B. variance inflation factor. C. t-test. D. z-score.

Biology & Microbiology

Which of the following protein tags allows for affinity chromatography using Ni2+ as the ligand?

A. glutathione-S-transferase (GST) B. His tag C. maltose-binding protein D. ?-galactosidase E. protein A

Biology & Microbiology