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Related Concept Videos

Short-distance Transport of Resources

Short-distance Transport of Resources

Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.

Plant Hormones

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Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.

Biological Clocks and Seasonal Responses

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Diversity in Cell Signaling Responses

Diversity in Cell Signaling Responses

The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity.
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Plant Hormones

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Ca2+ and Calmodulin Dynamics during Photopolarization in Fucus serratus Zygotes.

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Related Experiment Video

Updated: Jul 9, 2026

Monitoring Plant Hormones During Stress Responses

Monitoring Plant Hormones During Stress Responses

Published on: June 15, 2009

Sensitivity Thresholds and Variable Time Scales in Plant Hormone Action

K. J. Bradford¹, A. J. Trewavas

¹Department of Vegetable Crops, University of California, Davis, California 95616-8631 (K.J.B).

Plant Physiology

|August 1, 1994

Summary

No abstract available in PubMed .

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