An ideal α-helix has a pitch of 0.54 nm and a rise of 0.15 nm. What is the length along the helix axis for a segment of an ideal α-helix that contains 30 amino acids?

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#Question id: 8940

#XL - S Microbiology

Which of the following is a correct association of an animal germ layer with the tissues or organs to which it gives rise?

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#Question id: 8944

#XL - R Botany

Which two groups are most clearly represented in the Ediacaran fauna?

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#Question id: 9261

#XL - R Botany

Which of the following statements about horizontal gene transfer is accurate?

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#Question id: 9262

#XL - R Botany

The kingdom Monera was dismantled because of which of the following reasons?

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#Question id: 9264

#XL - R Botany

In a comparison of birds and mammals, the condition of having four limbs is

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#Question id: 9264

#XL - S Microbiology

In a comparison of birds and mammals, the condition of having four limbs is