Which of the following sensory receptors is correctly paired with its category?

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#Question id: 8950

#Unit 9. Diversity of Life Forms

You have before you a living organism, which you examine carefully. Which of the following should convince you that the organism is acoelomate?

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#Question id: 13184

#Unit 10. Ecological Principles

The MacArthur-Wilson equilibrium model of island biogeography predicts the number of species found on islands. The figure below depicts two volcanic islands located off a section of mainland coast.

According to  the  MacArthur-Wilson model, the  number of  bird  species present on  Island 2  at  any  one  time is  a function of the relative rates of

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#Question id: 19037

#Unit 13. Methods in Biology

In gas chromatography, the basis for separation of the components of the volatile material is the difference in________

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#Question id: 7092

#Unit 5. Developmental Biology

A gap gene mutation might cause which of the following defects in the embryonic body plan?

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#Question id: 33481

#Unit 2. Cellular Organization

A. In homologous introns, the pattern of divergence involves both changes in length.

B. Divergence in introns is due to deletions and insertions and base substitutions. 

C. Introns are slowly evolve while exons much more rapidly 

D. When a gene is compared among different species, there are instances where its exons are homologous but its introns have diverged so much that very little homology is retained.