As the two strands of the double helix are separated, the positive supercoiling interferes with the further unwinding of DNA. Which of the following enzyme makes a break in a strand of DNA to release the supercoiling and facilitate the replication to occur?

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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):