Related Experiment Video

Updated: Jun 6, 2026

Colorimetric Analysis of Alkaline Phosphatase Activity in S. aureus Biofilm
04:59

Colorimetric Analysis of Alkaline Phosphatase Activity in S. aureus Biofilm

Published on: April 12, 2019

The phosphorus fractions and alkaline phosphatase activities in sludge

Chunsheng Xie1, Jie Zhao, Jie Tang

  • 1Department of Environmental Engineering, Zhejiang University, Hangzhou, PR China.

Bioresource Technology
|December 3, 2010
PubMed

More Related Videos

Determination of Microbial Extracellular Enzyme Activity in Waters, Soils, and Sediments using High Throughput Microplate Assays15:23

Determination of Microbial Extracellular Enzyme Activity in Waters, Soils, and Sediments using High Throughput Microplate Assays

Published on: October 1, 2013

High-Throughput Measurement and Classification of Organic P in Environmental Samples08:58

High-Throughput Measurement and Classification of Organic P in Environmental Samples

Published on: June 8, 2011

Related Concept Videos

Factors Affecting Solubility04:01

Factors Affecting Solubility

Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
Protein Kinases and Phosphatases02:54

Protein Kinases and Phosphatases

Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
The Phosphorus Cycle01:21

The Phosphorus Cycle

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.