The nuclear AP-1 site responsible for 90% of IL-2 enhancer activity binds:

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#Question id: 15420

#Unit 5. Developmental Biology

signal from the inducing cell is necessary for initiating new gene expression in the responding cell. Without the inducing cell, the responding cell is not capable of differentiating in that particular way, phenomena known as:

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#Question id: 32365

#Unit 2. Cellular Organization

Which of the following statements is TRUE regarding the role of nucleotide hydrolysis in microfilament treadmilling?

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#Question id: 28386

#Unit 5. Developmental Biology

Fertilization can occur in the amphibian egg, the point of sperm entry is important because it determines____

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#Question id: 11077

#Unit 7. System Physiology – Animal

A person’s normal tidal volume is 400 ml with a dead space of 100 ml. The respiratory rate is 12 breaths/min. The person is placed on ventilator for surgery and the tidal volume is 700 with a rate of 12. What is the approximate alveolar Pco2 for this person?

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#Question id: 12412

#Unit 10. Ecological Principles

In most mammalian populations the sex ratio