Microbial Contributions
Microbial Contributions - Related Videos
11:15
Determining the Contribution of the Energy Systems During Exercise
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Cited by 61 •
2012
This protocol allows researchers focused on exercise and sports sciences to determine the relative contribution of three different energy systems to the total energy expenditure during a large variety of exercises.
01:25
Contribution Margin
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2026
Understanding contribution margin helps businesses evaluate how individual products contribute to covering costs and generating profit. It is calculated as the difference between selling price per unit and teh variable cost per unit.The contribution margin is the portion of sales revenue remaining after variable costs are deducted. This amount is used to cover fixed costs and generate profit. Unlike gross margin, contribution margin excludes fixed production costs, making it useful for...
01:22
Contribution Margin Ratio
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2026
The contribution margin ratio measures the portion of each sales dollar available to cover fixed costs and generate profit after variable costs have been deducted. It provides a simple way to evaluate profitability and operational efficiency.The ratio is calculated as:Contribution Margin Ratio = Contribution Margin ÷ Total SalesSince contribution margin equals total sales minus total variable costs, the ratio shows how much of every sales dollar remains after paying variable expenses. For...
21:02
Investigating the Microbial Community in the Termite Hindgut - Interview
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2007
Jared Leadbetter explains why the termite-gut microbial community is an excellent system for studying the complex interactions between microbes. The symbiotic relationship existing between the host insect and lignocellulose-degrading gut microbes is explained, as well as the industrial uses of these microbes for degrading plant biomass and generating biofuels.
01:23
Wechsler's Contribution to Measures of Intelligence
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2025
David Wechsler, a psychologist who worked with World War I veterans, developed a significant IQ test in 1939 called the Wechsler-Bellevue Intelligence Scale. This test was innovative because it combined several subtests that measured both verbal and nonverbal skills, reflecting Wechsler's belief that intelligence is a global capacity involving purposeful action, rational thinking, and effective interaction with the environment. This test later evolved into the Wechsler Adult Intelligence Scale...
FAQs
Microbial metabolism converts organic matter into forms that participate in carbon and nitrogen cycles. During decomposition, these transformations return nutrients to the environment and make them available for continued biological use. Because nutrient recycling links microbial activity with soil fertility and ecosystem function, changes in microbial metabolism can influence environmental stability and the productivity of living systems.
Symbiotic microbes can alter how plants and animals obtain or process nutrients and how their hosts function. These relationships may support plant performance, digestion, or broader host health, depending on the organisms involved. Studying such partnerships helps biology explain interactions between microorganisms and hosts rather than treating each organism as an isolated system.
Microbial effects depend on their relationship with the surrounding organism or environment. Metabolic activity can support digestion, nutrient recycling, or useful compound production, yet some microbes cause disease or alter host health negatively. This contrast makes microbial contributions a balance of beneficial and harmful effects, which is important when evaluating ecosystem, animal, or human outcomes.
By breaking down organic matter and recycling carbon and nitrogen, microbes help maintain nutrient availability in soils. These processes connect microscopic biological activity with soil fertility and ecosystem stability. Understanding them can inform environmental management by clarifying how biological systems sustain nutrient supplies and how microbial processes contribute to the condition of managed or natural environments.
Microbes produce useful compounds through their metabolic activities, making them valuable in fermentation and biotechnology. Their contributions can support food production as well as industrial production more broadly. Examining the compounds and transformations associated with microbial activity allows researchers to connect biological processes with practical production systems and identify ways to develop useful products.
Microbial research informs medicine in several ways described by the topic: it supports the development of medicines, improves understanding of infectious disease, and advances microbiome-based therapies. The central focus is how microbial activities or host-associated communities affect health. This knowledge helps researchers investigate both disease-causing organisms and therapeutic possibilities linked to microbial relationships.