If the insulin concentration rises fivefold to 2.5 × 10⁻¹¹ M, as it does after a meal, and the Kd for binding of insulin to its receptor on liver cells, 1.4 × 10⁻¹⁰ M (0.14 nM). What fraction of insulin receptors with bound insulin? 

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#Question id: 12466

#Unit 10. Ecological Principles

Which of the following is a density-independent factor that could limit a population of high-altitude butterflies?

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#Question id: 8289

#Unit 9. Diversity of Life Forms

The term convergent evolution is most applicable to which of the following features?

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#Question id: 4801

#Unit 8. Inheritance Biology

You set up a mapping cross involving two genes in Aspergillus and determine the following percentages of tetrad types: parental ditype 51%, nonparentalditype 49%. What can you say about your genes?

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#Question id: 4228

#Unit 3. Fundamental Processes

Which of the following characteristics is directly related to the coding of a single amino acid during the process of translation?

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#Question id: 23168

#Unit 13. Methods in Biology

What are the advantages of using secondary antibodies in indirect immunofluorescence?

1.  It makes easy to choose a different conjugate no matter the primary antibody

2. Enhance detection by localizing more conjugate at the antigen

3. Conjugation of fluorophore can interfere with the primary antibody’s recognition of the antigen

Which of the following options is correct?