Which of the Following Statements Is True About $\alpha$ -Helices?
A) the Center of the Helix Is an Open

question 100

Multiple Choice

Which of the following statements is true about $\alpha$ -helices?

• A) The center of the helix is an open channel.
• B) There are about seven amino acids per helical turn.
• C) The amide backbone dipoles line up in one direction.
• D) The helical backbone structure is stabilized by ionic interactions.

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Definitions:

Brood Parasitism

One egg-laying species benefits by having another raise its offspring.

Competitive Exclusion

A principle stating that two species competing for the same limiting resources cannot coexist at constant population values, if other ecological factors remain constant.

Woodpeckers

A family of birds known for their strong beaks and ability to peck at wood to find insects, create nesting sites, or communicate.

Brood Parasites

Organisms that rely on others to raise their young, often laying their eggs in the nests of unrelated species, which then unknowingly rear the parasitic offspring.