Phytochrome is that it enables plants to sense shading by other plants. Plants that increase stem extension in response to shading are said to exhibit a shade avoidance response.

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#Id: 916

#Unit 13. Methods in Biology

Propidium iodide is a fluorescent dye with a flat, planar structure that slides between the rungs of (or intercalates into) the DNA ladder in a quantitative manner frequently used in FACS. 

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#Id: 5540

#Unit 7. System Physiology – Animal

Thick ascending limb is called the diluting segment because NaCl is reabsorbed but water is not reabsorbed along with it 

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#Id: 8915

#Unit 2. Cellular Organization

Mitotic exit network plays an important role in shutting off mitotic cyclins by controlling the activation of the Cdc14 phosphatase through a GTPase pathway.

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#Id: 843

#Unit 2. Cellular Organization

The activation of electrogenic pumps as H+ ATPase can be measured in patch-clamping experiments

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#Id: 5456

#Unit 7. System Physiology – Animal

Voltage-gated Na+ channels are highly concentrated in the nodes of Ranvier and the initial segment in myelinated neurons.