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Related Concept Videos

Adhesion01:14

Adhesion

44.3K
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
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Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

33.3K
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
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Cell Adhesion in Plants01:14

Cell Adhesion in Plants

3.3K
Plants have rigid cell walls that are made up of cell wall polysaccharides that mediate cell-cell adhesion. The primary cell walls of plants consist of two independent and interacting polysaccharide networks: a pectin matrix that embeds the second network comprising cellulose and hemicelluloses.
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose,...
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Surface Tension and Surface Energy01:16

Surface Tension and Surface Energy

3.2K
When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
3.2K
Immunoglobulin-like Cell Adhesion Molecules01:31

Immunoglobulin-like Cell Adhesion Molecules

4.4K
Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
4.4K
Intracellular Signaling Affects Focal Adhesions01:17

Intracellular Signaling Affects Focal Adhesions

3.6K
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
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Updated: Jan 30, 2026

Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives
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Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives

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Development of surface adhesion in Caulobacter crescentus.

Diane Bodenmiller1, Evelyn Toh, Yves V Brun

  • 1Department of Biology, Indiana University, Bloomington, Indiana 47405, USA.

Journal of Bacteriology
|February 20, 2004
PubMed
Summary

Caulobacter crescentus attachment to surfaces requires more than just its holdfast. Optimal adhesion is a complex, cell cycle-regulated process involving growth, energy, and external structures like flagella and pili.

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Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
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Synchronization of Caulobacter Crescentus for Investigation of the Bacterial Cell Cycle
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Synchronization of Caulobacter Crescentus for Investigation of the Bacterial Cell Cycle

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Related Experiment Videos

Last Updated: Jan 30, 2026

Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives
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Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives

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Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
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Synchronization of Caulobacter Crescentus for Investigation of the Bacterial Cell Cycle
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Synchronization of Caulobacter Crescentus for Investigation of the Bacterial Cell Cycle

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Area of Science:

  • Microbiology
  • Cell Biology
  • Biophysics

Background:

  • Caulobacter crescentus exhibits a dimorphic life cycle with distinct motile and sessile stages.
  • The sessile stage is characterized by tight surface attachment via an adhesive holdfast.

Purpose of the Study:

  • To investigate the roles of growth and external structures in Caulobacter crescentus attachment to abiotic surfaces.
  • To elucidate the complex developmental process underlying C. crescentus adhesion.

Main Methods:

  • Microscopy and genetic manipulation to study Caulobacter crescentus.
  • Analysis of cell cycle regulation and the contribution of flagellar motility and pili to attachment.

Main Results:

  • The holdfast is essential but not sufficient for optimal C. crescentus attachment.
  • Attachment is a cell cycle-regulated process requiring growth and/or energy.
  • Initial attachment involves swarmer cells utilizing flagellar motility and pili.

Conclusions:

  • Caulobacter crescentus adhesion is a multifactorial process.
  • Strong attachment is achieved through holdfast synthesis during swarmer cell differentiation into stalked cells.