How many monomers are there in an oligomeric protein designated αβ2γ2?

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#Question id: 1599

#Unit 4. Cell Communication and Cell Signaling

Name the class of MHC which is recognized by CD4 TH cell.

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#Question id: 3699

#Unit 3. Fundamental Processes

In this diagram of the process of DNA replication at a replication fork, the black boxes labeled D and E are:

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#Question id: 12342

#Unit 10. Ecological Principles

Which of the following is a biological attribute that would most likely allow a species to become cosmopolitan in distribution?

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#Question id: 470

#Unit 1. Molecules and their Interaction Relevant to Biology

If glucose labeled with 14C in C-1 were fed to yeast carrying out the ethanol fermentation, where would the 14C label be in the products?

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#Question id: 9243

#Unit 9. Diversity of Life Forms

Elevated carbon dioxide levels have been shown to contribute to the greenhouse effect, resulting in an increase in mean global temperature. Ecosystems where the largest warming has already occurred include snow-covered northern coniferous forests, tundra, and arctic sea ice habitats. Which statement best explains how the elimination of ice-covered ecosystems affects the rise or fall in global temperature?