A hemisphere of iron is melted and recast in the shape of a right circular cylinder of diameter 18 cm and height 162 cm. The radius of the hemisphere is

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#Question id: 29055

#Unit 10. Ecological Principles

Which of the following statements is correct about biogeochemical cycling?

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#Question id: 21810

#Unit 12. Applied Biology

Which one of the following sensors uses sweat or saliva to gain information?

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#Question id: 33478

#Unit 2. Cellular Organization

Find true and false statements

A. Comparisons of related genes in different species show that the sequences of the corresponding exons are usually conserved

B. when two genes are related, the relationship between their exons is closer than the relationship between their introns.

C. The sequences of the introns are much less similar.

D. Introns evolve much more rapidly than exons because of the lack of selective pressure to produce a polypeptide with a useful sequence.

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#Question id: 1945

#Unit 4. Cell Communication and Cell Signaling

Neonatal myasthenia gravis is thought to be caused by:

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#Question id: 10674

#Unit 10. Ecological Principles

In Lotka-Volterra competition models, if K2/β > K1 and K1/α > K2, then: