Please arrange the following steps about ELIZA (Enzyme-linked immunosorbent assay) in chronological order

i. incubate with antibody-enzyme complex that binds primary antibody

ii. coat surface with antigen, block unoccupied sites with nonspecific protein

iii. add substrate, formation of colored product indicates presence of specific antigen

iv. incubate with primary antibody against specific antigen

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#Question id: 156

#Section 2: General Biology

What is the N-terminal for the pentapeptide Val-Ile-Glu-Arg-Tyr?

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#Question id: 157

#Section 2: General Biology

Which of the following statement describes the primary structure of a protein

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#Question id: 158

#Section 2: General Biology

At the isoelectric pH of a tetrapeptide:

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#Question id: 159

#Section 2: General Biology

The chirality of an amino acid results from the fact that its alpha carbon:

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#Question id: 161

#Section 2: General Biology

Two amino acids of the standard 20 contain sulfur atoms.  They are:

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#Question id: 162

#Section 2: General Biology

All of the amino acids that are found in proteins, except for proline, contain a(n):