Growth Rate Control
Growth Rate Control - Related Videos
05:17
Enhancement of the Initial Growth Rate of Agricultural Plants by Using Static Magnetic Fields
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Cited by 1 •
2016
The goal of this protocol is to demonstrate the acceleration of the initial growth rate of plants by applying static magnetic fields with no external energy.
01:29
Methods for Controlling Microbial Growth
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2025
Microbial growth control refers to various methods employed to inhibit, reduce, or eliminate microorganisms to ensure safety and hygiene across different settings. These methods are categorized based on the target environment and the level of microbial control required.Biocides are versatile agents designed to control microorganisms by either inhibiting their growth or outright killing them. These agents work through various physical, chemical, mechanical, or biological mechanisms. The...
01:22
Continuous Culture of Bacteria at Constant Density via Automated Growth Rate Estimation
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2025
Begin with a turbidostat, a device that maintains a constant cell density in culture.The device contains a vessel with a bacterial culture, which is continuously aerated by stirring and maintained at a constant temperature.A laser diode emits a light beam that is split into two paths.One path is directed to a reference sensor to monitor laser intensity fluctuations, while the other passes through the culture.Bacterial cells scatter and absorb light, decreasing the transmitted intensity, which...
01:23
Physical Methods for Controlling Microbial Growth: Temperature
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2025
Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...
10:49
Assays for the Specific Growth Rate and Cell-binding Ability of Rotavirus
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Cited by 5 •
2019
Here we present two protocols, one for measuring the specific growth rate and the other for the cell-binding ability of rotavirus using the plaque assay and RT-qPCR. These protocols are available for confirming the differences in phenotypes between rotavirus strains.
FAQs
Cells combine information from nutrient availability, hormones, growth factors, and stress rather than responding to one input in isolation. The integrated signal can alter biosynthesis, cell-cycle progression, or division, changing the pace of increase. This framework helps explain why the same biological system may grow differently when its environment, signaling state, or physiological demands change.
Feedback becomes important when resources or available space become restricted. Under those conditions, regulatory responses can limit biosynthesis, cell-cycle progression, or division, preventing continued increase from becoming disconnected from the system’s capacity. Studying this restraint helps explain coordinated tissue maintenance and situations in which normal limits on growth are altered.
Changes in biosynthesis can affect how much cellular material is produced, whereas cell-cycle progression and division directly influence how cell number changes. Because biological growth can be assessed through size, mass, or cell number, separating these processes helps researchers determine whether a slower or faster outcome reflects altered production, altered cycling, or altered division.
Researchers measure changes in size, mass, or cell number over time, then compare the resulting patterns between biological systems or experimental conditions. This design can reveal whether genetic differences, environmental changes, or pharmacological treatments are associated with faster or slower growth. Time-based measurements provide a basis for studying growth dynamics rather than relying on a single endpoint.
These studies can address how organisms develop, how tissues repair themselves, and how microbial populations change over time. They can also examine growth-related disease states, including cancer. Applying the same general focus across these systems allows researchers to connect changes in growth with genetic, environmental, or pharmacological conditions while recognizing that the relevant biological scale may differ.
Cancer is one disease context in which growth patterns can be examined alongside the regulatory processes that influence biosynthesis, cell-cycle progression, and division. Measuring changes over time can help compare cancer-related growth with other biological conditions or test how genetic, environmental, or pharmacological differences affect the observed outcome. The resulting comparisons support analysis of altered growth behavior.