Alpha Helices and β-Pleated Sheets Represent the ________ Structure of a Protein

question 17

Multiple Choice

Alpha helices and β-pleated sheets represent the ________ structure of a protein.

• A) primary
• B) secondary
• C) tertiary
• D) quaternary
• E) All of the above

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Definitions:

Capsids

Protein shells that encase the genetic material of a virus, protecting it and aiding in its transmission.

Chromatids

Each of the two thread-like strands into which a chromosome divides longitudinally during cell division. Each contains a double helix of DNA.

Rotating Flagella

Hair-like structures that protrude from the cell body of certain bacterial cells, rotating like propellers to enable movement.

Cilia

Microscopic, hair-like structures that extend from the surface of many animal cells, involved in movement and sensory functions.