Macronutrients

Macronutrients are nutrients required in relatively large amounts to provide energy and supply the molecular building blocks needed for growth, maintenance, and cellular function. In biology, carbohydrates, proteins, and lipids are digested into smaller molecules such as glucose, amino acids, fatty acids, and glycerol; cells then use these products through metabolic pathways for ATP production, biosynthesis, and tissue repair. Studying macronutrient metabolism helps explain energy balance, enzyme activity, body composition, and physiological adaptation. This knowledge supports research in nutrition, exercise biology, metabolism, and disease, including investigations of how nutrient availability influences health and cellular processes.

Macronutrients - Related Videos

Research

JoVE Journal - Neuroscience

Quantification of Macronutrients Intake in a Thermogenetic Neuronal Screen using Drosophila Larvae

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Cited by 4 •

2020

Described here is a protocol that enables the colorimetric quantification of the amount of food eaten within a defined interval of time by Drosophila melanogaster larvae exposed to diets of different macronutrient quality. These assays are conducted in the context of a neuronal thermogenetic screen.

Education

JoVE Science Education - Environmental Sciences
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Soil Nutrient Analysis: Nitrogen, Phosphorus, and Potassium

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2023

Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University In this experiment, three soil macronutrients are chemically extracted, combined with color-based reagents, then analyzed using color to determine the nutrient concentration present in the soil sample. Nitrogen, phosphorus, and potassium are the main components of soil fertilizer. These methods isolate each nutrient from the soil into a solution that can be analyzed using turbidity and color to determine the...

Primary Endodermal Epithelial Cell Culture from the Yolk Sac Membrane of Japanese Quail Embryos

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Cited by 6 •

2016

To study the mechanism of lipid utilization in yolk sac membranes during the late stages of avian embryonic development, we established a primary Japanese quail embryonic endodermal epithelial cell culture system.

Research

JoVE Journal - Biology
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Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements

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Cited by 102 •

2016

Here, we present an easy-to-follow protocol to establish a successful hydroponic system for plant nutrition studies. This protocol has been extensively tested in Arabidopsis and can easily be adapted to other plant species to study specific nutritional requirements or the effect of non-essential elements on plant growth and development.

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