Exchange of both oxygen and carbon dioxide through the respiratory membrane occurs by:

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#Question id: 31399

#Unit 4. Cell Communication and Cell Signaling

Somatomedins act on target tissues through IGF receptors that are similar to the: 

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#Question id: 10722

#Unit 10. Ecological Principles

Community 1 contains 100 individuals distributed among four species (A, B, C, and D). Community 2 contains 100 individuals distributed among three species (A, B, and C). Community 1: 5A, 5B, 85C, 5D Community 2: 30A, 40B, 30C Calculate the Shannon diversity (H) for each community.

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#Question id: 4214

#Unit 3. Fundamental Processes

Arrange the events listed below in order according to the signal hypothesis:

I. Signal sequence binds to SRP

II. Translation stops

III. Translation starts

IV. Ribophorins anchor complex

V. SRP dissociates; GTP hydrolyzed

VI. SRP-signal complex binds to docking protein

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#Question id: 11400

#Unit 9. Diversity of Life Forms

What is the primary ecological role of prokaryotes?

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#Question id: 19684

#Unit 13. Methods in Biology

Which of the following is used to measure the electrical activity of the heart?