Biological Macromolecules
Biological Macromolecules - Related Videos
06:26
Macromolecules - Concepts
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2019
Biomolecules Organisms contain a wide variety of organic molecules with numerous functions which depend on the chemical structures and properties of these molecules. All organic molecules contain a carbon backbone and hydrogen atoms. The carbon atom is central in the formation of a vast variety of organic molecules ranging in size, shape and complexity; inorganic molecules on the other hand, generally have simpler structures. The outermost shell of a free carbon atom can accommodate eight...
04:30
Macromolecules - Student Protocol
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2019
Identifying Macromolecules with Indicator Solutions ExpandHYPOTHESES: In this activity, the experimental hypothesis might be that the addition of an indicator dye to each test solution will result in a color change if the test solution contains the macromolecule of interest. The null hypothesis might be that the addition of an indicator dye will not result in a color change in any of the test solutions. Place 16 clean test tubes in a tube rack in four rows of four tubes and label each row A...
02:30
Macromolecules - Instructor Prep
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2019
Solution Preparation ExpandCAUTION: It is important to always use care when handling reagents. For example, iodine will stain clothes and skin so wear gloves, goggles, and a lab coat when using this reagent. To prepare a 1 M glucose solution, begin by using a stir bar to dissolve 180.2 g of glucose in 500 mL of distilled water, increasing the volume to 1 L once the solute has dissolved in the smaller volume of solvent. To prepare a 10% cornstarch solution, first use a hotplate to boil 1 L of...
07:11
Fully Autonomous Characterization and Data Collection from Crystals of Biological Macromolecules
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Cited by 2 •
2019
Here, we describe how to use the automated screening and data collection options available at some synchrotron beamlines. Scientists send cryocooled samples to the synchrotron, and the diffraction properties are screened, the data sets are collected and processed and, where possible, a structure solution is carried out—all without human intervention.
08:45
Isothermal Titration Calorimetry for Measuring Macromolecule-Ligand Affinity
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Cited by 84 •
2011
A general protocol for the use of isothermal titration calorimetry to monitor the binding thermodynamics for biological systems with moderate binding affinities is presented.
FAQs
Condensation reactions assemble many biological polymers by joining smaller molecular units, while hydrolysis reverses that process by using water to break them apart. This pairing helps explain how cells build larger molecular structures and later make their components available for other processes. It therefore connects molecular assembly with cellular maintenance and metabolism.
Chemical composition, three-dimensional structure, and molecular interactions jointly determine what a macromolecule can do. A change in one feature can alter how the molecule participates in cellular processes, because function does not depend on composition alone. This principle explains why proteins, nucleic acids, carbohydrates, and lipids support different structural, informational, energetic, or regulatory roles.
Proteins and nucleic acids illustrate different cellular responsibilities: proteins can act as enzymes, transporters, and structural components, while DNA and RNA encode or help express genetic information. Considering carbohydrates and lipids alongside these groups broadens the comparison to the molecular basis of cellular structure, energy storage, and regulation.
Biological macromolecules connect directly to metabolism because cells must both assemble and break down molecular components. Condensation supports polymer formation, whereas hydrolysis supports breakdown, and these molecular changes relate to functions such as energy storage and other life-sustaining processes. Studying this relationship places chemical reactions within the broader context of cellular metabolism.
Biological macromolecules provide a shared foundation for genetics and cell biology. DNA and RNA are central to encoding and expressing genetic information, while proteins contribute to transport, catalysis, and cellular structure. Examining how these molecules interact helps connect genetic information with the cellular activities that sustain life, rather than treating genetics and cell function as separate subjects.
Research on these molecules can inform the study of disease mechanisms, biotechnology, and therapeutics. Their composition, three-dimensional structure, and interactions offer molecular features that can be examined when asking how normal cellular processes work or become disrupted. This perspective explains why macromolecular knowledge supports both basic biological research and efforts to develop therapeutic approaches.